Merge branch 'master' into cmake-export-fix

106 files changed, 628 insertions, 275 deletions

diff --git a/test/core/bad_client/bad_client.cc b/test/core/bad_client/bad_client.cc
index 4c1642aa5d..dd8d88170e 100644
--- a/test/core/bad_client/bad_client.cc
+++ b/test/core/bad_client/bad_client.cc
@@ -28,10 +28,10 @@
 #include "src/core/ext/filters/http/server/http_server_filter.h"
 #include "src/core/ext/transport/chttp2/transport/chttp2_transport.h"
 #include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/gpr/murmur_hash.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/endpoint_pair.h"
 #include "src/core/lib/slice/slice_internal.h"
-#include "src/core/lib/support/murmur_hash.h"
-#include "src/core/lib/support/string.h"
 #include "src/core/lib/surface/completion_queue.h"
 #include "src/core/lib/surface/server.h"
 
diff --git a/test/core/bad_client/tests/large_metadata.cc b/test/core/bad_client/tests/large_metadata.cc
index 1ce0f28967..ff3e9eb932 100644
--- a/test/core/bad_client/tests/large_metadata.cc
+++ b/test/core/bad_client/tests/large_metadata.cc
@@ -22,7 +22,7 @@
 
 #include <grpc/support/alloc.h>
 #include <grpc/support/string_util.h>
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/surface/server.h"
 #include "test/core/end2end/cq_verifier.h"
 
diff --git a/test/core/bad_ssl/bad_ssl_test.cc b/test/core/bad_ssl/bad_ssl_test.cc
index 0e74a62f19..8a7960b5ed 100644
--- a/test/core/bad_ssl/bad_ssl_test.cc
+++ b/test/core/bad_ssl/bad_ssl_test.cc
@@ -26,8 +26,8 @@
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 #include <grpc/support/subprocess.h>
-#include "src/core/lib/support/env.h"
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/end2end/cq_verifier.h"
 #include "test/core/util/port.h"
 #include "test/core/util/test_config.h"
diff --git a/test/core/channel/minimal_stack_is_minimal_test.cc b/test/core/channel/minimal_stack_is_minimal_test.cc
index 3495f603e4..f02c8180f2 100644
--- a/test/core/channel/minimal_stack_is_minimal_test.cc
+++ b/test/core/channel/minimal_stack_is_minimal_test.cc
@@ -35,7 +35,7 @@
 #include <string.h>
 
 #include "src/core/lib/channel/channel_stack_builder.h"
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/surface/channel_init.h"
 #include "src/core/lib/surface/channel_stack_type.h"
 #include "src/core/lib/transport/transport_impl.h"
diff --git a/test/core/client_channel/lb_policies_test.cc b/test/core/client_channel/lb_policies_test.cc
index 847ea0066b..716c63b9d0 100644
--- a/test/core/client_channel/lb_policies_test.cc
+++ b/test/core/client_channel/lb_policies_test.cc
@@ -30,7 +30,7 @@
 #include "src/core/ext/filters/client_channel/lb_policy_registry.h"
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/channel/channel_stack.h"
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/surface/channel.h"
 #include "src/core/lib/surface/server.h"
 #include "test/core/end2end/cq_verifier.h"
diff --git a/test/core/client_channel/resolvers/sockaddr_resolver_test.cc b/test/core/client_channel/resolvers/sockaddr_resolver_test.cc
index 4d16a77924..07ee133ee3 100644
--- a/test/core/client_channel/resolvers/sockaddr_resolver_test.cc
+++ b/test/core/client_channel/resolvers/sockaddr_resolver_test.cc
@@ -63,8 +63,10 @@ static void test_succeeds(grpc_resolver_factory* factory, const char* string) {
   grpc_resolver_next_locked(resolver, &on_res_arg.resolver_result,
                             on_resolution);
   GRPC_RESOLVER_UNREF(resolver, "test_succeeds");
-
   grpc_uri_destroy(uri);
+  /* Flush ExecCtx to avoid stack-use-after-scope on on_res_arg which is
+   * accessed in the closure on_resolution_cb */
+  grpc_core::ExecCtx::Get()->Flush();
 }
 
 static void test_fails(grpc_resolver_factory* factory, const char* string) {
diff --git a/test/core/compression/message_compress_test.cc b/test/core/compression/message_compress_test.cc
index 6ca07b70c4..b03ca4c4cb 100644
--- a/test/core/compression/message_compress_test.cc
+++ b/test/core/compression/message_compress_test.cc
@@ -25,8 +25,8 @@
 #include <grpc/support/log.h>
 #include <grpc/support/useful.h>
 
+#include "src/core/lib/gpr/murmur_hash.h"
 #include "src/core/lib/iomgr/exec_ctx.h"
-#include "src/core/lib/support/murmur_hash.h"
 #include "test/core/util/slice_splitter.h"
 #include "test/core/util/test_config.h"
 
diff --git a/test/core/end2end/bad_server_response_test.cc b/test/core/end2end/bad_server_response_test.cc
index 93809ac37a..a8e5e291c8 100644
--- a/test/core/end2end/bad_server_response_test.cc
+++ b/test/core/end2end/bad_server_response_test.cc
@@ -31,10 +31,10 @@
 #include <grpc/support/log.h>
 #include <grpc/support/thd.h>
 
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/sockaddr.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/support/string.h"
 #include "test/core/end2end/cq_verifier.h"
 #include "test/core/util/port.h"
 #include "test/core/util/test_config.h"
diff --git a/test/core/end2end/cq_verifier.cc b/test/core/end2end/cq_verifier.cc
index 8686f4e7b7..7bf8ae0f6e 100644
--- a/test/core/end2end/cq_verifier.cc
+++ b/test/core/end2end/cq_verifier.cc
@@ -29,7 +29,7 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/surface/event_string.h"
 
 #define ROOT_EXPECTATION 1000
diff --git a/test/core/end2end/dualstack_socket_test.cc b/test/core/end2end/dualstack_socket_test.cc
index 2ba1c17c2c..bb30547cd2 100644
--- a/test/core/end2end/dualstack_socket_test.cc
+++ b/test/core/end2end/dualstack_socket_test.cc
@@ -29,12 +29,12 @@
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/error.h"
 #include "src/core/lib/iomgr/resolve_address.h"
 #include "src/core/lib/iomgr/sockaddr_utils.h"
 #include "src/core/lib/iomgr/socket_utils_posix.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/support/string.h"
 #include "test/core/end2end/cq_verifier.h"
 #include "test/core/util/port.h"
 #include "test/core/util/test_config.h"
@@ -43,14 +43,11 @@
 
 static void* tag(intptr_t i) { return (void*)i; }
 
-static gpr_timespec ms_from_now(int ms) {
-  return grpc_timeout_milliseconds_to_deadline(ms);
-}
-
 static void drain_cq(grpc_completion_queue* cq) {
   grpc_event ev;
   do {
-    ev = grpc_completion_queue_next(cq, ms_from_now(5000), nullptr);
+    ev = grpc_completion_queue_next(
+        cq, grpc_timeout_milliseconds_to_deadline(5000), nullptr);
   } while (ev.type != GRPC_QUEUE_SHUTDOWN);
 }
 
@@ -165,11 +162,11 @@ void test_connect(const char* server_host, const char* client_host, int port,
 
   if (expect_ok) {
     /* Normal deadline, shouldn't be reached. */
-    deadline = ms_from_now(60000);
+    deadline = grpc_timeout_milliseconds_to_deadline(60000);
   } else {
     /* Give up faster when failure is expected.
        BUG: Setting this to 1000 reveals a memory leak (b/18608927). */
-    deadline = ms_from_now(1500);
+    deadline = grpc_timeout_milliseconds_to_deadline(3000);
   }
 
   /* Send a trivial request. */
diff --git a/test/core/end2end/fixtures/h2_full+trace.cc b/test/core/end2end/fixtures/h2_full+trace.cc
index a49de96009..7104fbc581 100644
--- a/test/core/end2end/fixtures/h2_full+trace.cc
+++ b/test/core/end2end/fixtures/h2_full+trace.cc
@@ -35,7 +35,7 @@
 #include "src/core/ext/filters/http/server/http_server_filter.h"
 #include "src/core/ext/transport/chttp2/transport/chttp2_transport.h"
 #include "src/core/lib/channel/connected_channel.h"
-#include "src/core/lib/support/env.h"
+#include "src/core/lib/gpr/env.h"
 #include "src/core/lib/surface/channel.h"
 #include "src/core/lib/surface/server.h"
 #include "test/core/util/port.h"
diff --git a/test/core/end2end/fixtures/h2_http_proxy.cc b/test/core/end2end/fixtures/h2_http_proxy.cc
index 099367d91b..e8e81f0930 100644
--- a/test/core/end2end/fixtures/h2_http_proxy.cc
+++ b/test/core/end2end/fixtures/h2_http_proxy.cc
@@ -31,7 +31,7 @@
 #include "src/core/ext/filters/http/server/http_server_filter.h"
 #include "src/core/ext/transport/chttp2/transport/chttp2_transport.h"
 #include "src/core/lib/channel/connected_channel.h"
-#include "src/core/lib/support/env.h"
+#include "src/core/lib/gpr/env.h"
 #include "src/core/lib/surface/channel.h"
 #include "src/core/lib/surface/server.h"
 #include "test/core/end2end/fixtures/http_proxy_fixture.h"
diff --git a/test/core/end2end/fixtures/h2_sockpair+trace.cc b/test/core/end2end/fixtures/h2_sockpair+trace.cc
index 9807e929af..236780b8d3 100644
--- a/test/core/end2end/fixtures/h2_sockpair+trace.cc
+++ b/test/core/end2end/fixtures/h2_sockpair+trace.cc
@@ -36,9 +36,9 @@
 #include "src/core/ext/filters/http/server/http_server_filter.h"
 #include "src/core/ext/transport/chttp2/transport/chttp2_transport.h"
 #include "src/core/lib/channel/connected_channel.h"
+#include "src/core/lib/gpr/env.h"
 #include "src/core/lib/iomgr/endpoint_pair.h"
 #include "src/core/lib/iomgr/iomgr.h"
-#include "src/core/lib/support/env.h"
 #include "src/core/lib/surface/channel.h"
 #include "src/core/lib/surface/completion_queue.h"
 #include "src/core/lib/surface/server.h"
diff --git a/test/core/end2end/fixtures/h2_ssl.cc b/test/core/end2end/fixtures/h2_ssl.cc
index 9a0680c40e..8c5c8a2f3f 100644
--- a/test/core/end2end/fixtures/h2_ssl.cc
+++ b/test/core/end2end/fixtures/h2_ssl.cc
@@ -26,10 +26,10 @@
 #include <grpc/support/log.h>
 
 #include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/tmpfile.h"
 #include "src/core/lib/security/credentials/credentials.h"
-#include "src/core/lib/support/env.h"
-#include "src/core/lib/support/string.h"
-#include "src/core/lib/support/tmpfile.h"
 #include "test/core/end2end/data/ssl_test_data.h"
 #include "test/core/util/port.h"
 #include "test/core/util/test_config.h"
diff --git a/test/core/end2end/fixtures/h2_ssl_proxy.cc b/test/core/end2end/fixtures/h2_ssl_proxy.cc
index 5ddbdefc8c..3f0646cf0f 100644
--- a/test/core/end2end/fixtures/h2_ssl_proxy.cc
+++ b/test/core/end2end/fixtures/h2_ssl_proxy.cc
@@ -26,10 +26,10 @@
 #include <grpc/support/log.h>
 
 #include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/tmpfile.h"
 #include "src/core/lib/security/credentials/credentials.h"
-#include "src/core/lib/support/env.h"
-#include "src/core/lib/support/string.h"
-#include "src/core/lib/support/tmpfile.h"
 #include "test/core/end2end/data/ssl_test_data.h"
 #include "test/core/end2end/fixtures/proxy.h"
 #include "test/core/util/port.h"
diff --git a/test/core/end2end/fixtures/h2_uds.cc b/test/core/end2end/fixtures/h2_uds.cc
index 28f0a50e15..1944dd84a3 100644
--- a/test/core/end2end/fixtures/h2_uds.cc
+++ b/test/core/end2end/fixtures/h2_uds.cc
@@ -33,7 +33,7 @@
 #include "src/core/ext/filters/http/server/http_server_filter.h"
 #include "src/core/ext/transport/chttp2/transport/chttp2_transport.h"
 #include "src/core/lib/channel/connected_channel.h"
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/surface/channel.h"
 #include "src/core/lib/surface/server.h"
 #include "test/core/util/port.h"
diff --git a/test/core/end2end/fixtures/http_proxy_fixture.cc b/test/core/end2end/fixtures/http_proxy_fixture.cc
index 137f7c9fa3..8ec97df3e4 100644
--- a/test/core/end2end/fixtures/http_proxy_fixture.cc
+++ b/test/core/end2end/fixtures/http_proxy_fixture.cc
@@ -34,6 +34,7 @@
 #include <grpc/support/useful.h>
 
 #include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/http/parser.h"
 #include "src/core/lib/iomgr/closure.h"
 #include "src/core/lib/iomgr/combiner.h"
@@ -49,7 +50,6 @@
 #include "src/core/lib/iomgr/timer.h"
 #include "src/core/lib/slice/b64.h"
 #include "src/core/lib/slice/slice_internal.h"
-#include "src/core/lib/support/string.h"
 #include "test/core/util/port.h"
 
 struct grpc_end2end_http_proxy {
diff --git a/test/core/end2end/fuzzers/api_fuzzer.cc b/test/core/end2end/fuzzers/api_fuzzer.cc
index 967a6d560f..14c155502a 100644
--- a/test/core/end2end/fuzzers/api_fuzzer.cc
+++ b/test/core/end2end/fuzzers/api_fuzzer.cc
@@ -28,13 +28,13 @@
 #include "src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.h"
 #include "src/core/ext/transport/chttp2/transport/chttp2_transport.h"
 #include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/env.h"
 #include "src/core/lib/iomgr/executor.h"
 #include "src/core/lib/iomgr/resolve_address.h"
 #include "src/core/lib/iomgr/tcp_client.h"
 #include "src/core/lib/iomgr/timer.h"
 #include "src/core/lib/iomgr/timer_manager.h"
 #include "src/core/lib/slice/slice_internal.h"
-#include "src/core/lib/support/env.h"
 #include "src/core/lib/surface/server.h"
 #include "src/core/lib/transport/metadata.h"
 #include "test/core/end2end/data/ssl_test_data.h"
@@ -280,7 +280,12 @@ static grpc_channel_credentials* read_ssl_channel_creds(input_stream* inp) {
   return creds;
 }
 
-static grpc_call_credentials* read_call_creds(input_stream* inp) {
+static grpc_call_credentials* read_call_creds(input_stream* inp, int depth) {
+  if (depth > 64) {
+    // prevent creating infinitely deep call creds
+    end(inp);
+    return nullptr;
+  }
   switch (next_byte(inp)) {
     default:
       end(inp);
@@ -288,8 +293,8 @@ static grpc_call_credentials* read_call_creds(input_stream* inp) {
     case 0:
       return nullptr;
     case 1: {
-      grpc_call_credentials* c1 = read_call_creds(inp);
-      grpc_call_credentials* c2 = read_call_creds(inp);
+      grpc_call_credentials* c1 = read_call_creds(inp, depth + 1);
+      grpc_call_credentials* c2 = read_call_creds(inp, depth + 1);
       if (c1 != nullptr && c2 != nullptr) {
         grpc_call_credentials* out =
             grpc_composite_call_credentials_create(c1, c2, nullptr);
@@ -338,7 +343,7 @@ static grpc_channel_credentials* read_channel_creds(input_stream* inp) {
       break;
     case 1: {
       grpc_channel_credentials* c1 = read_channel_creds(inp);
-      grpc_call_credentials* c2 = read_call_creds(inp);
+      grpc_call_credentials* c2 = read_call_creds(inp, 0);
       if (c1 != nullptr && c2 != nullptr) {
         grpc_channel_credentials* out =
             grpc_composite_channel_credentials_create(c1, c2, nullptr);
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/fuzz-input-d2ab5 b/test/core/end2end/fuzzers/api_fuzzer_corpus/fuzz-input-d2ab5
new file mode 100644
index 0000000000..1745798b68
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/fuzz-input-d2ab5
diff --git a/test/core/end2end/h2_ssl_cert_test.cc b/test/core/end2end/h2_ssl_cert_test.cc
index d50d1f4d81..3383d6d5d1 100644
--- a/test/core/end2end/h2_ssl_cert_test.cc
+++ b/test/core/end2end/h2_ssl_cert_test.cc
@@ -26,10 +26,10 @@
 #include <grpc/support/log.h>
 
 #include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/tmpfile.h"
 #include "src/core/lib/security/credentials/credentials.h"
-#include "src/core/lib/support/env.h"
-#include "src/core/lib/support/string.h"
-#include "src/core/lib/support/tmpfile.h"
 #include "test/core/end2end/cq_verifier.h"
 #include "test/core/end2end/data/ssl_test_data.h"
 #include "test/core/util/port.h"
diff --git a/test/core/end2end/tests/bad_hostname.cc b/test/core/end2end/tests/bad_hostname.cc
index 97ef62b5e3..85e9ba1307 100644
--- a/test/core/end2end/tests/bad_hostname.cc
+++ b/test/core/end2end/tests/bad_hostname.cc
@@ -27,7 +27,7 @@
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/end2end/cq_verifier.h"
 
 static void* tag(intptr_t t) { return (void*)t; }
diff --git a/test/core/end2end/tests/call_creds.cc b/test/core/end2end/tests/call_creds.cc
index e1c868232c..c5ea101c53 100644
--- a/test/core/end2end/tests/call_creds.cc
+++ b/test/core/end2end/tests/call_creds.cc
@@ -27,8 +27,8 @@
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/security/credentials/credentials.h"
-#include "src/core/lib/support/string.h"
 #include "test/core/end2end/cq_verifier.h"
 
 static const char iam_token[] = "token";
diff --git a/test/core/end2end/tests/cancel_with_status.cc b/test/core/end2end/tests/cancel_with_status.cc
index c867751d53..7937fd161f 100644
--- a/test/core/end2end/tests/cancel_with_status.cc
+++ b/test/core/end2end/tests/cancel_with_status.cc
@@ -28,7 +28,7 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/end2end/cq_verifier.h"
 
 static void* tag(intptr_t t) { return (void*)t; }
diff --git a/test/core/end2end/tests/default_host.cc b/test/core/end2end/tests/default_host.cc
index 85f92b0ab0..7c94420540 100644
--- a/test/core/end2end/tests/default_host.cc
+++ b/test/core/end2end/tests/default_host.cc
@@ -27,7 +27,7 @@
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/end2end/cq_verifier.h"
 
 static void* tag(intptr_t t) { return (void*)t; }
diff --git a/test/core/end2end/tests/empty_batch.cc b/test/core/end2end/tests/empty_batch.cc
index b249c141de..c41e65ddd2 100644
--- a/test/core/end2end/tests/empty_batch.cc
+++ b/test/core/end2end/tests/empty_batch.cc
@@ -27,7 +27,7 @@
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/end2end/cq_verifier.h"
 
 static void* tag(intptr_t t) { return (void*)t; }
diff --git a/test/core/end2end/tests/high_initial_seqno.cc b/test/core/end2end/tests/high_initial_seqno.cc
index d390a954e5..d4d4f5a817 100644
--- a/test/core/end2end/tests/high_initial_seqno.cc
+++ b/test/core/end2end/tests/high_initial_seqno.cc
@@ -29,7 +29,7 @@
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
 
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/end2end/cq_verifier.h"
 
 static void* tag(intptr_t t) { return (void*)t; }
diff --git a/test/core/end2end/tests/hpack_size.cc b/test/core/end2end/tests/hpack_size.cc
index 7ac5fefa22..0d6ec01e36 100644
--- a/test/core/end2end/tests/hpack_size.cc
+++ b/test/core/end2end/tests/hpack_size.cc
@@ -29,7 +29,7 @@
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
 
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/end2end/cq_verifier.h"
 
 static void* tag(intptr_t t) { return (void*)t; }
diff --git a/test/core/end2end/tests/idempotent_request.cc b/test/core/end2end/tests/idempotent_request.cc
index e39975382a..7487e4d83d 100644
--- a/test/core/end2end/tests/idempotent_request.cc
+++ b/test/core/end2end/tests/idempotent_request.cc
@@ -27,7 +27,7 @@
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/end2end/cq_verifier.h"
 
 static void* tag(intptr_t t) { return (void*)t; }
diff --git a/test/core/end2end/tests/keepalive_timeout.cc b/test/core/end2end/tests/keepalive_timeout.cc
index 822565510f..6482b86825 100644
--- a/test/core/end2end/tests/keepalive_timeout.cc
+++ b/test/core/end2end/tests/keepalive_timeout.cc
@@ -28,8 +28,8 @@
 #include <grpc/support/useful.h>
 #include "src/core/ext/transport/chttp2/transport/frame_ping.h"
 #include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/env.h"
 #include "src/core/lib/iomgr/exec_ctx.h"
-#include "src/core/lib/support/env.h"
 #include "test/core/end2end/cq_verifier.h"
 
 static void* tag(intptr_t t) { return (void*)t; }
diff --git a/test/core/end2end/tests/negative_deadline.cc b/test/core/end2end/tests/negative_deadline.cc
index b793964b48..b752bf9482 100644
--- a/test/core/end2end/tests/negative_deadline.cc
+++ b/test/core/end2end/tests/negative_deadline.cc
@@ -27,7 +27,7 @@
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/end2end/cq_verifier.h"
 
 static void* tag(intptr_t t) { return (void*)t; }
diff --git a/test/core/end2end/tests/no_logging.cc b/test/core/end2end/tests/no_logging.cc
index bf8651221a..d89918bd3e 100644
--- a/test/core/end2end/tests/no_logging.cc
+++ b/test/core/end2end/tests/no_logging.cc
@@ -28,8 +28,8 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/error.h"
-#include "src/core/lib/support/string.h"
 #include "test/core/end2end/cq_verifier.h"
 
 enum { TIMEOUT = 200000 };
diff --git a/test/core/end2end/tests/proxy_auth.cc b/test/core/end2end/tests/proxy_auth.cc
index e4b91ab879..495151b592 100644
--- a/test/core/end2end/tests/proxy_auth.cc
+++ b/test/core/end2end/tests/proxy_auth.cc
@@ -32,7 +32,7 @@
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/end2end/cq_verifier.h"
 
 static void* tag(intptr_t t) { return (void*)t; }
diff --git a/test/core/end2end/tests/registered_call.cc b/test/core/end2end/tests/registered_call.cc
index 440d817cf1..cefa89db4d 100644
--- a/test/core/end2end/tests/registered_call.cc
+++ b/test/core/end2end/tests/registered_call.cc
@@ -27,7 +27,7 @@
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/end2end/cq_verifier.h"
 
 static void* tag(intptr_t t) { return (void*)t; }
diff --git a/test/core/end2end/tests/server_finishes_request.cc b/test/core/end2end/tests/server_finishes_request.cc
index 46b874b569..743b3aeb91 100644
--- a/test/core/end2end/tests/server_finishes_request.cc
+++ b/test/core/end2end/tests/server_finishes_request.cc
@@ -27,7 +27,7 @@
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/end2end/cq_verifier.h"
 
 static void* tag(intptr_t t) { return (void*)t; }
diff --git a/test/core/end2end/tests/simple_request.cc b/test/core/end2end/tests/simple_request.cc
index 7eb7467981..ae93f79c9d 100644
--- a/test/core/end2end/tests/simple_request.cc
+++ b/test/core/end2end/tests/simple_request.cc
@@ -28,7 +28,7 @@
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
 #include "src/core/lib/debug/stats.h"
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/end2end/cq_verifier.h"
 
 static void* tag(intptr_t t) { return (void*)t; }
diff --git a/test/core/fling/fling_stream_test.cc b/test/core/fling/fling_stream_test.cc
index b476f2e128..b5a5ce816e 100644
--- a/test/core/fling/fling_stream_test.cc
+++ b/test/core/fling/fling_stream_test.cc
@@ -23,7 +23,7 @@
 #include <grpc/support/host_port.h>
 #include <grpc/support/string_util.h>
 #include <grpc/support/subprocess.h>
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/util/port.h"
 
 int main(int argc, char** argv) {
diff --git a/test/core/fling/fling_test.cc b/test/core/fling/fling_test.cc
index 0e8b3c1028..3792e45c42 100644
--- a/test/core/fling/fling_test.cc
+++ b/test/core/fling/fling_test.cc
@@ -23,7 +23,7 @@
 #include <grpc/support/host_port.h>
 #include <grpc/support/string_util.h>
 #include <grpc/support/subprocess.h>
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/util/port.h"
 
 int main(int argc, const char** argv) {
diff --git a/test/core/gpr++/BUILD b/test/core/gpr++/BUILD
new file mode 100644
index 0000000000..93324a378b
--- /dev/null
+++ b/test/core/gpr++/BUILD
@@ -0,0 +1,95 @@
+# Copyright 2016 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary", "grpc_package")
+
+licenses(["notice"])  # Apache v2
+
+grpc_package(name = "test/core/gpr++")
+
+grpc_cc_test(
+    name = "manual_constructor_test",
+    srcs = ["manual_constructor_test.cc"],
+    language = "C++",
+    deps = [
+        "//:gpr",
+        "//test/core/util:gpr_test_util",
+    ],
+)
+
+grpc_cc_test(
+    name = "memory_test",
+    srcs = ["memory_test.cc"],
+    external_deps = [
+        "gtest",
+    ],
+    language = "C++",
+    deps = [
+        "//:grpc",
+        "//test/core/util:gpr_test_util",
+    ],
+)
+
+grpc_cc_test(
+    name = "inlined_vector_test",
+    srcs = ["inlined_vector_test.cc"],
+    external_deps = [
+        "gtest",
+    ],
+    language = "C++",
+    deps = [
+        "//:grpc",
+        "//test/core/util:gpr_test_util",
+    ],
+)
+
+grpc_cc_test(
+    name = "orphanable_test",
+    srcs = ["orphanable_test.cc"],
+    language = "C++",
+    deps = [
+        "//:orphanable",
+        "//test/core/util:gpr_test_util",
+    ],
+    external_deps = [
+        "gtest",
+    ],
+)
+
+grpc_cc_test(
+    name = "ref_counted_test",
+    srcs = ["ref_counted_test.cc"],
+    language = "C++",
+    deps = [
+        "//:ref_counted",
+        "//test/core/util:gpr_test_util",
+    ],
+    external_deps = [
+        "gtest",
+    ],
+)
+
+grpc_cc_test(
+    name = "ref_counted_ptr_test",
+    srcs = ["ref_counted_ptr_test.cc"],
+    language = "C++",
+    deps = [
+        "//:ref_counted",
+        "//:ref_counted_ptr",
+        "//test/core/util:gpr_test_util",
+    ],
+    external_deps = [
+        "gtest",
+    ],
+)
diff --git a/test/core/support/vector_test.cc b/test/core/gpr++/inlined_vector_test.cc
index 82607a1b26..09d5453a56 100644
--- a/test/core/support/vector_test.cc
+++ b/test/core/gpr++/inlined_vector_test.cc
@@ -16,9 +16,9 @@
  *
  */
 
-#include "src/core/lib/support/vector.h"
+#include "src/core/lib/gpr++/inlined_vector.h"
 #include <gtest/gtest.h>
-#include "src/core/lib/support/memory.h"
+#include "src/core/lib/gpr++/memory.h"
 #include "test/core/util/test_config.h"
 
 namespace grpc_core {
diff --git a/test/core/support/manual_constructor_test.cc b/test/core/gpr++/manual_constructor_test.cc
index 714f8b21a0..e049b793f6 100644
--- a/test/core/support/manual_constructor_test.cc
+++ b/test/core/gpr++/manual_constructor_test.cc
@@ -18,7 +18,7 @@
 
 /* Test of gpr synchronization support. */
 
-#include "src/core/lib/support/manual_constructor.h"
+#include "src/core/lib/gpr++/manual_constructor.h"
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/sync.h>
@@ -26,7 +26,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <cstring>
-#include "src/core/lib/support/abstract.h"
+#include "src/core/lib/gpr++/abstract.h"
 #include "test/core/util/test_config.h"
 
 class A {
diff --git a/test/core/support/memory_test.cc b/test/core/gpr++/memory_test.cc
index 79ab631a78..3553e119e3 100644
--- a/test/core/support/memory_test.cc
+++ b/test/core/gpr++/memory_test.cc
@@ -16,7 +16,7 @@
  *
  */
 
-#include "src/core/lib/support/memory.h"
+#include "src/core/lib/gpr++/memory.h"
 #include <gtest/gtest.h>
 #include "test/core/util/test_config.h"
 
diff --git a/test/core/gpr++/orphanable_test.cc b/test/core/gpr++/orphanable_test.cc
new file mode 100644
index 0000000000..4513d25da1
--- /dev/null
+++ b/test/core/gpr++/orphanable_test.cc
@@ -0,0 +1,114 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include "src/core/lib/gpr++/orphanable.h"
+
+#include <gtest/gtest.h>
+
+#include "src/core/lib/gpr++/memory.h"
+#include "test/core/util/test_config.h"
+
+namespace grpc_core {
+namespace testing {
+namespace {
+
+class Foo : public Orphanable {
+ public:
+  Foo() : Foo(0) {}
+  explicit Foo(int value) : value_(value) {}
+  void Orphan() override { Delete(this); }
+  int value() const { return value_; }
+
+ private:
+  int value_;
+};
+
+TEST(Orphanable, Basic) {
+  Foo* foo = New<Foo>();
+  foo->Orphan();
+}
+
+TEST(OrphanablePtr, Basic) {
+  OrphanablePtr<Foo> foo(New<Foo>());
+  EXPECT_EQ(0, foo->value());
+}
+
+TEST(MakeOrphanable, DefaultConstructor) {
+  auto foo = MakeOrphanable<Foo>();
+  EXPECT_EQ(0, foo->value());
+}
+
+TEST(MakeOrphanable, WithParameters) {
+  auto foo = MakeOrphanable<Foo>(5);
+  EXPECT_EQ(5, foo->value());
+}
+
+class Bar : public InternallyRefCounted {
+ public:
+  Bar() : Bar(0) {}
+  explicit Bar(int value) : value_(value) {}
+  void Orphan() override { Unref(); }
+  int value() const { return value_; }
+
+  void StartWork() { Ref(); }
+  void FinishWork() { Unref(); }
+
+ private:
+  int value_;
+};
+
+TEST(OrphanablePtr, InternallyRefCounted) {
+  auto bar = MakeOrphanable<Bar>();
+  bar->StartWork();
+  bar->FinishWork();
+}
+
+// Note: We use DebugOnlyTraceFlag instead of TraceFlag to ensure that
+// things build properly in both debug and non-debug cases.
+DebugOnlyTraceFlag baz_tracer(true, "baz");
+
+class Baz : public InternallyRefCountedWithTracing {
+ public:
+  Baz() : Baz(0) {}
+  explicit Baz(int value)
+      : InternallyRefCountedWithTracing(&baz_tracer), value_(value) {}
+  void Orphan() override { Unref(); }
+  int value() const { return value_; }
+
+  void StartWork() { Ref(DEBUG_LOCATION, "work"); }
+  void FinishWork() { Unref(DEBUG_LOCATION, "work"); }
+
+ private:
+  int value_;
+};
+
+TEST(OrphanablePtr, InternallyRefCountedWithTracing) {
+  auto baz = MakeOrphanable<Baz>();
+  baz->StartWork();
+  baz->FinishWork();
+}
+
+}  // namespace
+}  // namespace testing
+}  // namespace grpc_core
+
+int main(int argc, char** argv) {
+  grpc_test_init(argc, argv);
+  ::testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}
diff --git a/test/core/support/ref_counted_ptr_test.cc b/test/core/gpr++/ref_counted_ptr_test.cc
index 1830edc4e5..e897b2859c 100644
--- a/test/core/support/ref_counted_ptr_test.cc
+++ b/test/core/gpr++/ref_counted_ptr_test.cc
@@ -16,14 +16,14 @@
  *
  */
 
-#include "src/core/lib/support/ref_counted_ptr.h"
+#include "src/core/lib/gpr++/ref_counted_ptr.h"
 
 #include <gtest/gtest.h>
 
 #include <grpc/support/log.h>
 
-#include "src/core/lib/support/memory.h"
-#include "src/core/lib/support/ref_counted.h"
+#include "src/core/lib/gpr++/memory.h"
+#include "src/core/lib/gpr++/ref_counted.h"
 #include "test/core/util/test_config.h"
 
 namespace grpc_core {
@@ -138,6 +138,19 @@ TEST(RefCountedPtr, DerefernceOperators) {
   foo_ref.value();
 }
 
+TEST(RefCountedPtr, EqualityOperators) {
+  RefCountedPtr<Foo> foo(New<Foo>());
+  RefCountedPtr<Foo> bar = foo;
+  RefCountedPtr<Foo> empty;
+  // Test equality between RefCountedPtrs.
+  EXPECT_EQ(foo, bar);
+  EXPECT_NE(foo, empty);
+  // Test equality with bare pointers.
+  EXPECT_EQ(foo, foo.get());
+  EXPECT_EQ(empty, nullptr);
+  EXPECT_NE(foo, nullptr);
+}
+
 TEST(MakeRefCounted, NoArgs) {
   RefCountedPtr<Foo> foo = MakeRefCounted<Foo>();
   EXPECT_EQ(0, foo->value());
diff --git a/test/core/support/ref_counted_test.cc b/test/core/gpr++/ref_counted_test.cc
index be9b6ff7c2..568ec51c64 100644
--- a/test/core/support/ref_counted_test.cc
+++ b/test/core/gpr++/ref_counted_test.cc
@@ -16,11 +16,11 @@
  *
  */
 
-#include "src/core/lib/support/ref_counted.h"
+#include "src/core/lib/gpr++/ref_counted.h"
 
 #include <gtest/gtest.h>
 
-#include "src/core/lib/support/memory.h"
+#include "src/core/lib/gpr++/memory.h"
 #include "test/core/util/test_config.h"
 
 namespace grpc_core {
@@ -44,7 +44,9 @@ TEST(RefCounted, ExtraRef) {
   foo->Unref();
 }
 
-TraceFlag foo_tracer(true, "foo");
+// Note: We use DebugOnlyTraceFlag instead of TraceFlag to ensure that
+// things build properly in both debug and non-debug cases.
+DebugOnlyTraceFlag foo_tracer(true, "foo");
 
 class FooWithTracing : public RefCountedWithTracing {
  public:
diff --git a/test/core/support/BUILD b/test/core/gpr/BUILD
index 4372b49b54..1be1036d04 100644
--- a/test/core/support/BUILD
+++ b/test/core/gpr/BUILD
@@ -16,7 +16,7 @@ load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_c
 
 licenses(["notice"])  # Apache v2
 
-grpc_package(name = "test/core/support")
+grpc_package(name = "test/core/gpr")
 
 grpc_cc_test(
     name = "alloc_test",
@@ -119,16 +119,6 @@ grpc_cc_test(
 )
 
 grpc_cc_test(
-    name = "manual_constructor_test",
-    srcs = ["manual_constructor_test.cc"],
-    language = "C++",
-    deps = [
-        "//:gpr",
-        "//test/core/util:gpr_test_util",
-    ],
-)
-
-grpc_cc_test(
     name = "spinlock_test",
     srcs = ["spinlock_test.cc"],
     language = "C++",
@@ -187,56 +177,3 @@ grpc_cc_test(
         "//test/core/util:gpr_test_util",
     ],
 )
-
-grpc_cc_test(
-    name = "memory_test",
-    srcs = ["memory_test.cc"],
-    external_deps = [
-        "gtest",
-    ],
-    language = "C++",
-    deps = [
-        "//:grpc",
-        "//test/core/util:gpr_test_util",
-    ],
-)
-
-grpc_cc_test(
-    name = "vector_test",
-    srcs = ["vector_test.cc"],
-    external_deps = [
-        "gtest",
-    ],
-    language = "C++",
-    deps = [
-        "//:grpc",
-        "//test/core/util:gpr_test_util",
-    ],
-)
-
-grpc_cc_test(
-    name = "ref_counted_test",
-    srcs = ["ref_counted_test.cc"],
-    language = "C++",
-    deps = [
-        "//:ref_counted",
-        "//test/core/util:gpr_test_util",
-    ],
-    external_deps = [
-        "gtest",
-    ],
-)
-
-grpc_cc_test(
-    name = "ref_counted_ptr_test",
-    srcs = ["ref_counted_ptr_test.cc"],
-    language = "C++",
-    deps = [
-        "//:ref_counted",
-        "//:ref_counted_ptr",
-        "//test/core/util:gpr_test_util",
-    ],
-    external_deps = [
-        "gtest",
-    ],
-)
diff --git a/test/core/support/alloc_test.cc b/test/core/gpr/alloc_test.cc
index 6074c6e6e7..6074c6e6e7 100644
--- a/test/core/support/alloc_test.cc
+++ b/test/core/gpr/alloc_test.cc
diff --git a/test/core/support/arena_test.cc b/test/core/gpr/arena_test.cc
index ada0f43854..59ea04c0ed 100644
--- a/test/core/support/arena_test.cc
+++ b/test/core/gpr/arena_test.cc
@@ -16,7 +16,7 @@
  *
  */
 
-#include "src/core/lib/support/arena.h"
+#include "src/core/lib/gpr/arena.h"
 
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
@@ -27,7 +27,7 @@
 #include <inttypes.h>
 #include <string.h>
 
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/util/test_config.h"
 
 static void test_noop(void) { gpr_arena_destroy(gpr_arena_create(1)); }
diff --git a/test/core/support/avl_test.cc b/test/core/gpr/avl_test.cc
index 345db557b9..345db557b9 100644
--- a/test/core/support/avl_test.cc
+++ b/test/core/gpr/avl_test.cc
diff --git a/test/core/support/cmdline_test.cc b/test/core/gpr/cmdline_test.cc
index 172efda8a0..172efda8a0 100644
--- a/test/core/support/cmdline_test.cc
+++ b/test/core/gpr/cmdline_test.cc
diff --git a/test/core/support/cpu_test.cc b/test/core/gpr/cpu_test.cc
index 87cdc0fb50..87cdc0fb50 100644
--- a/test/core/support/cpu_test.cc
+++ b/test/core/gpr/cpu_test.cc
diff --git a/test/core/support/env_test.cc b/test/core/gpr/env_test.cc
index b12c04d06f..3f4b493239 100644
--- a/test/core/support/env_test.cc
+++ b/test/core/gpr/env_test.cc
@@ -22,8 +22,8 @@
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 
-#include "src/core/lib/support/env.h"
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/util/test_config.h"
 
 #define LOG_TEST_NAME(x) gpr_log(GPR_INFO, "%s", x)
diff --git a/test/core/support/host_port_test.cc b/test/core/gpr/host_port_test.cc
index 42dd56524f..42dd56524f 100644
--- a/test/core/support/host_port_test.cc
+++ b/test/core/gpr/host_port_test.cc
diff --git a/test/core/support/log_test.cc b/test/core/gpr/log_test.cc
index 7dba35c13e..839ff0aef9 100644
--- a/test/core/support/log_test.cc
+++ b/test/core/gpr/log_test.cc
@@ -21,7 +21,7 @@
 #include <stdbool.h>
 #include <string.h>
 
-#include "src/core/lib/support/env.h"
+#include "src/core/lib/gpr/env.h"
 #include "test/core/util/test_config.h"
 
 static bool log_func_reached = false;
diff --git a/test/core/support/mpscq_test.cc b/test/core/gpr/mpscq_test.cc
index 1b83f7d5be..5a8177543c 100644
--- a/test/core/support/mpscq_test.cc
+++ b/test/core/gpr/mpscq_test.cc
@@ -16,7 +16,7 @@
  *
  */
 
-#include "src/core/lib/support/mpscq.h"
+#include "src/core/lib/gpr/mpscq.h"
 
 #include <stdlib.h>
 
diff --git a/test/core/support/murmur_hash_test.cc b/test/core/gpr/murmur_hash_test.cc
index 461c728951..d920dd3f95 100644
--- a/test/core/support/murmur_hash_test.cc
+++ b/test/core/gpr/murmur_hash_test.cc
@@ -16,7 +16,7 @@
  *
  */
 
-#include "src/core/lib/support/murmur_hash.h"
+#include "src/core/lib/gpr/murmur_hash.h"
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 #include "test/core/util/test_config.h"
diff --git a/test/core/support/spinlock_test.cc b/test/core/gpr/spinlock_test.cc
index ea0dbbf7c6..77e3dfbede 100644
--- a/test/core/support/spinlock_test.cc
+++ b/test/core/gpr/spinlock_test.cc
@@ -18,7 +18,7 @@
 
 /* Test of gpr synchronization support. */
 
-#include "src/core/lib/support/spinlock.h"
+#include "src/core/lib/gpr/spinlock.h"
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/sync.h>
diff --git a/test/core/support/string_test.cc b/test/core/gpr/string_test.cc
index fd7f7cde59..57068eb2c9 100644
--- a/test/core/support/string_test.cc
+++ b/test/core/gpr/string_test.cc
@@ -16,7 +16,7 @@
  *
  */
 
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 
 #include <limits.h>
 #include <stddef.h>
diff --git a/test/core/support/sync_test.cc b/test/core/gpr/sync_test.cc
index 768f96d093..768f96d093 100644
--- a/test/core/support/sync_test.cc
+++ b/test/core/gpr/sync_test.cc
diff --git a/test/core/support/thd_test.cc b/test/core/gpr/thd_test.cc
index b755bf18f3..b755bf18f3 100644
--- a/test/core/support/thd_test.cc
+++ b/test/core/gpr/thd_test.cc
diff --git a/test/core/support/time_test.cc b/test/core/gpr/time_test.cc
index b2b4dce58e..b2b4dce58e 100644
--- a/test/core/support/time_test.cc
+++ b/test/core/gpr/time_test.cc
diff --git a/test/core/support/tls_test.cc b/test/core/gpr/tls_test.cc
index 743b10f090..743b10f090 100644
--- a/test/core/support/tls_test.cc
+++ b/test/core/gpr/tls_test.cc
diff --git a/test/core/support/useful_test.cc b/test/core/gpr/useful_test.cc
index 2f86010d77..2f86010d77 100644
--- a/test/core/support/useful_test.cc
+++ b/test/core/gpr/useful_test.cc
diff --git a/test/core/iomgr/ev_epollsig_linux_test.cc b/test/core/iomgr/ev_epollsig_linux_test.cc
index e767e01f21..262470300e 100644
--- a/test/core/iomgr/ev_epollsig_linux_test.cc
+++ b/test/core/iomgr/ev_epollsig_linux_test.cc
@@ -18,7 +18,7 @@
 #include "src/core/lib/iomgr/port.h"
 
 /* This test only relevant on linux systems where epoll() is available */
-#ifdef GRPC_LINUX_EPOLL
+#ifdef GRPC_LINUX_EPOLL_CREATE1
 #include "src/core/lib/iomgr/ev_epollsig_linux.h"
 #include "src/core/lib/iomgr/ev_posix.h"
 
@@ -319,6 +319,6 @@ int main(int argc, char** argv) {
   grpc_shutdown();
   return 0;
 }
-#else  /* defined(GRPC_LINUX_EPOLL) */
+#else  /* defined(GRPC_LINUX_EPOLL_CREATE1) */
 int main(int argc, char** argv) { return 0; }
-#endif /* !defined(GRPC_LINUX_EPOLL) */
+#endif /* !defined(GRPC_LINUX_EPOLL_CREATE1) */
diff --git a/test/core/iomgr/load_file_test.cc b/test/core/iomgr/load_file_test.cc
index 797d0ef1a4..38c8710535 100644
--- a/test/core/iomgr/load_file_test.cc
+++ b/test/core/iomgr/load_file_test.cc
@@ -24,9 +24,9 @@
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/tmpfile.h"
 #include "src/core/lib/iomgr/load_file.h"
-#include "src/core/lib/support/string.h"
-#include "src/core/lib/support/tmpfile.h"
 #include "test/core/util/test_config.h"
 
 #define LOG_TEST_NAME(x) gpr_log(GPR_INFO, "%s", x)
diff --git a/test/core/iomgr/pollset_set_test.cc b/test/core/iomgr/pollset_set_test.cc
index f27079134b..7d2f59bed4 100644
--- a/test/core/iomgr/pollset_set_test.cc
+++ b/test/core/iomgr/pollset_set_test.cc
@@ -18,7 +18,7 @@
 #include "src/core/lib/iomgr/port.h"
 
 /* This test only relevant on linux systems where epoll is available */
-#ifdef GRPC_LINUX_EPOLL
+#ifdef GRPC_LINUX_EPOLL_CREATE1
 
 #include <errno.h>
 #include <string.h>
@@ -443,6 +443,6 @@ int main(int argc, char** argv) {
   grpc_shutdown();
   return 0;
 }
-#else  /* defined(GRPC_LINUX_EPOLL) */
+#else  /* defined(GRPC_LINUX_EPOLL_CREATE1) */
 int main(int argc, char** argv) { return 0; }
-#endif /* !defined(GRPC_LINUX_EPOLL) */
+#endif /* !defined(GRPC_LINUX_EPOLL_CREATE1) */
diff --git a/test/core/iomgr/wakeup_fd_cv_test.cc b/test/core/iomgr/wakeup_fd_cv_test.cc
index d4e05bd7ef..c092a8f3bf 100644
--- a/test/core/iomgr/wakeup_fd_cv_test.cc
+++ b/test/core/iomgr/wakeup_fd_cv_test.cc
@@ -27,9 +27,9 @@
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
 
+#include "src/core/lib/gpr/env.h"
 #include "src/core/lib/iomgr/ev_posix.h"
 #include "src/core/lib/iomgr/iomgr_posix.h"
-#include "src/core/lib/support/env.h"
 
 typedef struct poll_args {
   struct pollfd* fds;
diff --git a/test/core/json/json_test.cc b/test/core/json/json_test.cc
index 18b9c55ee7..902f1cd90e 100644
--- a/test/core/json/json_test.cc
+++ b/test/core/json/json_test.cc
@@ -22,8 +22,8 @@
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 #include <grpc/support/useful.h>
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/json/json.h"
-#include "src/core/lib/support/string.h"
 
 #include "test/core/util/test_config.h"
 
diff --git a/test/core/memory_usage/client.cc b/test/core/memory_usage/client.cc
index eb90067970..ca841434aa 100644
--- a/test/core/memory_usage/client.cc
+++ b/test/core/memory_usage/client.cc
@@ -28,8 +28,8 @@
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
-#include "src/core/lib/support/env.h"
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/util/memory_counters.h"
 #include "test/core/util/test_config.h"
 
diff --git a/test/core/memory_usage/memory_usage_test.cc b/test/core/memory_usage/memory_usage_test.cc
index 58e31c9531..fb6d290130 100644
--- a/test/core/memory_usage/memory_usage_test.cc
+++ b/test/core/memory_usage/memory_usage_test.cc
@@ -23,7 +23,7 @@
 #include <grpc/support/host_port.h>
 #include <grpc/support/string_util.h>
 #include <grpc/support/subprocess.h>
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/util/port.h"
 
 int main(int argc, char** argv) {
diff --git a/test/core/security/auth_context_test.cc b/test/core/security/auth_context_test.cc
index d8e41326c0..58f0d8e1c2 100644
--- a/test/core/security/auth_context_test.cc
+++ b/test/core/security/auth_context_test.cc
@@ -18,8 +18,8 @@
 
 #include <string.h>
 
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/security/context/security_context.h"
-#include "src/core/lib/support/string.h"
 #include "test/core/util/test_config.h"
 
 #include <grpc/support/log.h>
diff --git a/test/core/security/credentials_test.cc b/test/core/security/credentials_test.cc
index ecc61928f5..90310469aa 100644
--- a/test/core/security/credentials_test.cc
+++ b/test/core/security/credentials_test.cc
@@ -31,6 +31,9 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/time.h>
 
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/tmpfile.h"
 #include "src/core/lib/http/httpcli.h"
 #include "src/core/lib/security/credentials/composite/composite_credentials.h"
 #include "src/core/lib/security/credentials/fake/fake_credentials.h"
@@ -38,9 +41,6 @@
 #include "src/core/lib/security/credentials/jwt/jwt_credentials.h"
 #include "src/core/lib/security/credentials/oauth2/oauth2_credentials.h"
 #include "src/core/lib/security/transport/auth_filters.h"
-#include "src/core/lib/support/env.h"
-#include "src/core/lib/support/string.h"
-#include "src/core/lib/support/tmpfile.h"
 #include "test/core/util/test_config.h"
 
 /* -- Mock channel credentials. -- */
diff --git a/test/core/security/print_google_default_creds_token.cc b/test/core/security/print_google_default_creds_token.cc
index d71116d8f6..a90f997bda 100644
--- a/test/core/security/print_google_default_creds_token.cc
+++ b/test/core/security/print_google_default_creds_token.cc
@@ -27,10 +27,10 @@
 #include <grpc/support/log.h>
 #include <grpc/support/sync.h>
 
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/security/credentials/composite/composite_credentials.h"
 #include "src/core/lib/security/credentials/credentials.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/support/string.h"
 
 typedef struct {
   gpr_mu* mu;
diff --git a/test/core/security/security_connector_test.cc b/test/core/security/security_connector_test.cc
index 9a68e176db..6eaef2bf49 100644
--- a/test/core/security/security_connector_test.cc
+++ b/test/core/security/security_connector_test.cc
@@ -25,12 +25,12 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/useful.h>
 
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/tmpfile.h"
 #include "src/core/lib/security/context/security_context.h"
 #include "src/core/lib/security/transport/security_connector.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/support/env.h"
-#include "src/core/lib/support/string.h"
-#include "src/core/lib/support/tmpfile.h"
 #include "src/core/tsi/ssl_transport_security.h"
 #include "src/core/tsi/transport_security.h"
 #include "test/core/util/test_config.h"
diff --git a/test/core/slice/percent_encoding_test.cc b/test/core/slice/percent_encoding_test.cc
index 11f3995f98..e8d04fcc83 100644
--- a/test/core/slice/percent_encoding_test.cc
+++ b/test/core/slice/percent_encoding_test.cc
@@ -22,8 +22,8 @@
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/support/string.h"
 #include "test/core/util/test_config.h"
 
 #define TEST_VECTOR(raw, encoded, dict) \
diff --git a/test/core/slice/slice_string_helpers_test.cc b/test/core/slice/slice_string_helpers_test.cc
index f1d470461a..a443f17c69 100644
--- a/test/core/slice/slice_string_helpers_test.cc
+++ b/test/core/slice/slice_string_helpers_test.cc
@@ -29,7 +29,7 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/useful.h>
 
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/util/test_config.h"
 
 #define LOG_TEST_NAME(x) gpr_log(GPR_INFO, "%s", x)
diff --git a/test/core/surface/alarm_test.cc b/test/core/surface/alarm_test.cc
index 8950603b41..67fc6833a5 100644
--- a/test/core/surface/alarm_test.cc
+++ b/test/core/surface/alarm_test.cc
@@ -34,8 +34,15 @@ static void* create_test_tag(void) {
 static void shutdown_and_destroy(grpc_completion_queue* cc) {
   grpc_event ev;
   grpc_completion_queue_shutdown(cc);
-  ev =
-      grpc_completion_queue_next(cc, gpr_inf_past(GPR_CLOCK_REALTIME), nullptr);
+  /* By the time grpc_completion_queue_shutdown runs, the cq's internal
+     pending event counter might not have been updated yet by a previous
+     cq_end_op_for_next (which releases a completed event first and only later
+     updates the pending event counter), so we can't rely on a no-polling
+     cq_next to never return GRPC_QUEUE_TIMEOUT. Using a deadline in the future
+     solves the problem. See https://github.com/grpc/grpc/issues/13693.
+     */
+  ev = grpc_completion_queue_next(cc, grpc_timeout_seconds_to_deadline(2),
+                                  nullptr);
   GPR_ASSERT(ev.type == GRPC_QUEUE_SHUTDOWN);
   grpc_completion_queue_destroy(cc);
 }
diff --git a/test/core/transport/bdp_estimator_test.cc b/test/core/transport/bdp_estimator_test.cc
index 445823b628..3afcad7f17 100644
--- a/test/core/transport/bdp_estimator_test.cc
+++ b/test/core/transport/bdp_estimator_test.cc
@@ -25,8 +25,8 @@
 #include <grpc/support/useful.h>
 #include <gtest/gtest.h>
 #include <limits.h>
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/timer_manager.h"
-#include "src/core/lib/support/string.h"
 #include "test/core/util/test_config.h"
 
 extern gpr_timespec (*gpr_now_impl)(gpr_clock_type clock_type);
diff --git a/test/core/transport/chttp2/bin_decoder_test.cc b/test/core/transport/chttp2/bin_decoder_test.cc
index 6d70a4261b..283eebbacf 100644
--- a/test/core/transport/chttp2/bin_decoder_test.cc
+++ b/test/core/transport/chttp2/bin_decoder_test.cc
@@ -24,9 +24,9 @@
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include "src/core/ext/transport/chttp2/transport/bin_encoder.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/support/string.h"
 
 static int all_ok = 1;
 
diff --git a/test/core/transport/chttp2/bin_encoder_test.cc b/test/core/transport/chttp2/bin_encoder_test.cc
index 44f5de8a50..bd62b0e479 100644
--- a/test/core/transport/chttp2/bin_encoder_test.cc
+++ b/test/core/transport/chttp2/bin_encoder_test.cc
@@ -26,8 +26,8 @@
 #include <grpc/grpc.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/support/string.h"
 
 static int all_ok = 1;
 
diff --git a/test/core/transport/chttp2/hpack_encoder_test.cc b/test/core/transport/chttp2/hpack_encoder_test.cc
index d2dbd4a798..a40bd643ec 100644
--- a/test/core/transport/chttp2/hpack_encoder_test.cc
+++ b/test/core/transport/chttp2/hpack_encoder_test.cc
@@ -26,9 +26,9 @@
 #include <grpc/support/string_util.h>
 
 #include "src/core/ext/transport/chttp2/transport/hpack_parser.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/support/string.h"
 #include "src/core/lib/transport/metadata.h"
 #include "test/core/util/parse_hexstring.h"
 #include "test/core/util/slice_splitter.h"
diff --git a/test/core/transport/chttp2/hpack_table_test.cc b/test/core/transport/chttp2/hpack_table_test.cc
index 3f3cb2ee9d..e316cf63a0 100644
--- a/test/core/transport/chttp2/hpack_table_test.cc
+++ b/test/core/transport/chttp2/hpack_table_test.cc
@@ -26,7 +26,7 @@
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/util/test_config.h"
 
 #define LOG_TEST(x) gpr_log(GPR_INFO, "%s", x)
diff --git a/test/core/transport/metadata_test.cc b/test/core/transport/metadata_test.cc
index 5c52ae8d5f..7d943fd5c7 100644
--- a/test/core/transport/metadata_test.cc
+++ b/test/core/transport/metadata_test.cc
@@ -27,8 +27,8 @@
 #include <grpc/support/string_util.h>
 
 #include "src/core/ext/transport/chttp2/transport/bin_encoder.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/slice/slice_internal.h"
-#include "src/core/lib/support/string.h"
 #include "src/core/lib/transport/static_metadata.h"
 #include "test/core/util/test_config.h"
 
diff --git a/test/core/transport/pid_controller_test.cc b/test/core/transport/pid_controller_test.cc
index 081d03472a..1a499c2fb7 100644
--- a/test/core/transport/pid_controller_test.cc
+++ b/test/core/transport/pid_controller_test.cc
@@ -26,7 +26,7 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/useful.h>
 #include <gtest/gtest.h>
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/util/test_config.h"
 
 namespace grpc_core {
diff --git a/test/core/transport/timeout_encoding_test.cc b/test/core/transport/timeout_encoding_test.cc
index 0930bc836d..e94be138dd 100644
--- a/test/core/transport/timeout_encoding_test.cc
+++ b/test/core/transport/timeout_encoding_test.cc
@@ -25,8 +25,8 @@
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 #include <grpc/support/useful.h>
-#include "src/core/lib/support/murmur_hash.h"
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/murmur_hash.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/core/util/test_config.h"
 
 #define LOG_TEST(x) gpr_log(GPR_INFO, "%s", x)
diff --git a/test/core/tsi/transport_security_test.cc b/test/core/tsi/transport_security_test.cc
index c788ad96ad..42e17df25d 100644
--- a/test/core/tsi/transport_security_test.cc
+++ b/test/core/tsi/transport_security_test.cc
@@ -27,7 +27,7 @@
 
 #include <openssl/crypto.h>
 
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/tsi/fake_transport_security.h"
 #include "src/core/tsi/ssl_transport_security.h"
 #include "test/core/util/test_config.h"
diff --git a/test/core/util/test_config.cc b/test/core/util/test_config.cc
index 9ebb52d83e..6b410440c2 100644
--- a/test/core/util/test_config.cc
+++ b/test/core/util/test_config.cc
@@ -27,8 +27,8 @@
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 
-#include "src/core/lib/support/env.h"
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
 
 int64_t g_fixture_slowdown_factor = 1;
 int64_t g_poller_slowdown_factor = 1;
diff --git a/test/cpp/client/client_channel_stress_test.cc b/test/cpp/client/client_channel_stress_test.cc
index e829d5278b..80d1583333 100644
--- a/test/cpp/client/client_channel_stress_test.cc
+++ b/test/cpp/client/client_channel_stress_test.cc
@@ -19,6 +19,7 @@
 #include <atomic>
 #include <memory>
 #include <mutex>
+#include <random>
 #include <sstream>
 #include <thread>
 
@@ -104,8 +105,8 @@ class BalancerServiceImpl : public LoadBalancer::Service {
     for (size_t i = 0; i < num_drop_entry; ++i) {
       random_backend_indices.push_back(-1);
     }
-    std::random_shuffle(random_backend_indices.begin(),
-                        random_backend_indices.end());
+    std::shuffle(random_backend_indices.begin(), random_backend_indices.end(),
+                 std::mt19937(std::random_device()()));
     // Build the response according to the random list generated above.
     LoadBalanceResponse response;
     for (int index : random_backend_indices) {
@@ -149,7 +150,8 @@ class ClientChannelStressTest {
           addresses.emplace_back(AddressData{balancer_server.port_, true, ""});
         }
       }
-      std::random_shuffle(addresses.begin(), addresses.end());
+      std::shuffle(addresses.begin(), addresses.end(),
+                   std::mt19937(std::random_device()()));
       SetNextResolution(addresses);
       std::this_thread::sleep_for(wait_duration);
     }
diff --git a/test/cpp/end2end/BUILD b/test/cpp/end2end/BUILD
index fa77c30aca..8894c68b95 100644
--- a/test/cpp/end2end/BUILD
+++ b/test/cpp/end2end/BUILD
@@ -16,25 +16,31 @@ licenses(["notice"])  # Apache v2
 
 load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_package", "grpc_cc_binary")
 
-grpc_package(name = "test/cpp/end2end", visibility = "public") # Allows external users to implement end2end tests.
+grpc_package(
+    name = "test/cpp/end2end",
+    visibility = "public",
+)  # Allows external users to implement end2end tests.
 
 grpc_cc_library(
     name = "test_service_impl",
     testonly = True,
     srcs = ["test_service_impl.cc"],
     hdrs = ["test_service_impl.h"],
+    external_deps = [
+        "gtest",
+    ],
     deps = [
         "//src/proto/grpc/testing:echo_proto",
         "//test/cpp/util:test_util",
     ],
-    external_deps = [
-        "gtest",
-    ],
 )
 
 grpc_cc_test(
     name = "async_end2end_test",
     srcs = ["async_end2end_test.cc"],
+    external_deps = [
+        "gtest",
+    ],
     deps = [
         "//:gpr",
         "//:grpc",
@@ -47,14 +53,17 @@ grpc_cc_test(
         "//test/core/util:grpc_test_util",
         "//test/cpp/util:test_util",
     ],
-    external_deps = [
-        "gtest",
-    ],
 )
 
 grpc_cc_test(
     name = "client_crash_test",
     srcs = ["client_crash_test.cc"],
+    data = [
+        ":client_crash_test_server",
+    ],
+    external_deps = [
+        "gtest",
+    ],
     deps = [
         "//:gpr",
         "//:grpc",
@@ -66,18 +75,16 @@ grpc_cc_test(
         "//test/core/util:grpc_test_util",
         "//test/cpp/util:test_util",
     ],
-    data = [
-        ":client_crash_test_server",
-    ],
-    external_deps = [
-        "gtest",
-    ],
 )
 
 grpc_cc_binary(
     name = "client_crash_test_server",
     testonly = True,
     srcs = ["client_crash_test_server.cc"],
+    external_deps = [
+        "gflags",
+        "gtest",
+    ],
     deps = [
         "//:gpr",
         "//:grpc",
@@ -89,16 +96,15 @@ grpc_cc_binary(
         "//test/core/util:grpc_test_util",
         "//test/cpp/util:test_util",
     ],
-    external_deps = [
-        "gflags",
-        "gtest",
-    ],
 )
 
 grpc_cc_library(
     name = "end2end_test_lib",
-    srcs = ["end2end_test.cc"],
     testonly = True,
+    srcs = ["end2end_test.cc"],
+    external_deps = [
+        "gtest",
+    ],
     deps = [
         ":test_service_impl",
         "//:gpr",
@@ -111,40 +117,58 @@ grpc_cc_library(
         "//test/core/util:grpc_test_util",
         "//test/cpp/util:test_util",
     ],
-    external_deps = [
-        "gtest",
-    ],
 )
 
 grpc_cc_test(
     name = "end2end_test",
     deps = [
-        ":end2end_test_lib"
+        ":end2end_test_lib",
     ],
 )
 
 grpc_cc_test(
-    name = "filter_end2end_test",
-    srcs = ["filter_end2end_test.cc"],
+    name = "exception_test",
+    srcs = ["exception_test.cc"],
+    external_deps = [
+        "gtest",
+    ],
     deps = [
         "//:gpr",
         "//:grpc",
         "//:grpc++",
         "//src/proto/grpc/testing:echo_messages_proto",
         "//src/proto/grpc/testing:echo_proto",
-        "//src/proto/grpc/testing/duplicate:echo_duplicate_proto",
         "//test/core/util:gpr_test_util",
         "//test/core/util:grpc_test_util",
         "//test/cpp/util:test_util",
     ],
+)
+
+grpc_cc_test(
+    name = "filter_end2end_test",
+    srcs = ["filter_end2end_test.cc"],
     external_deps = [
         "gtest",
     ],
+    deps = [
+        "//:gpr",
+        "//:grpc",
+        "//:grpc++",
+        "//src/proto/grpc/testing:echo_messages_proto",
+        "//src/proto/grpc/testing:echo_proto",
+        "//src/proto/grpc/testing/duplicate:echo_duplicate_proto",
+        "//test/core/util:gpr_test_util",
+        "//test/core/util:grpc_test_util",
+        "//test/cpp/util:test_util",
+    ],
 )
 
 grpc_cc_test(
     name = "generic_end2end_test",
     srcs = ["generic_end2end_test.cc"],
+    external_deps = [
+        "gtest",
+    ],
     deps = [
         "//:gpr",
         "//:grpc",
@@ -156,14 +180,14 @@ grpc_cc_test(
         "//test/core/util:grpc_test_util",
         "//test/cpp/util:test_util",
     ],
-    external_deps = [
-        "gtest",
-    ],
 )
 
 grpc_cc_test(
     name = "hybrid_end2end_test",
     srcs = ["hybrid_end2end_test.cc"],
+    external_deps = [
+        "gtest",
+    ],
     deps = [
         ":test_service_impl",
         "//:gpr",
@@ -176,14 +200,15 @@ grpc_cc_test(
         "//test/core/util:grpc_test_util",
         "//test/cpp/util:test_util",
     ],
-    external_deps = [
-        "gtest",
-    ],
 )
 
 grpc_cc_test(
     name = "mock_test",
     srcs = ["mock_test.cc"],
+    external_deps = [
+        "gmock",
+        "gtest",
+    ],
     deps = [
         "//:gpr",
         "//:grpc",
@@ -196,15 +221,14 @@ grpc_cc_test(
         "//test/core/util:grpc_test_util",
         "//test/cpp/util:test_util",
     ],
-    external_deps = [
-        "gmock",
-        "gtest",
-    ],
 )
 
 grpc_cc_test(
     name = "client_lb_end2end_test",
     srcs = ["client_lb_end2end_test.cc"],
+    external_deps = [
+        "gtest",
+    ],
     deps = [
         ":test_service_impl",
         "//:gpr",
@@ -217,37 +241,38 @@ grpc_cc_test(
         "//test/core/util:grpc_test_util",
         "//test/cpp/util:test_util",
     ],
-    external_deps = [
-        "gtest",
-    ],
 )
 
 grpc_cc_test(
     name = "grpclb_end2end_test",
     srcs = ["grpclb_end2end_test.cc"],
+    external_deps = [
+        "gmock",
+        "gtest",
+    ],
     deps = [
         ":test_service_impl",
         "//:gpr",
         "//:grpc",
         "//:grpc++",
+        "//:grpc_resolver_fake",
         "//src/proto/grpc/lb/v1:load_balancer_proto",
         "//src/proto/grpc/testing:echo_messages_proto",
         "//src/proto/grpc/testing:echo_proto",
         "//src/proto/grpc/testing/duplicate:echo_duplicate_proto",
-        "//:grpc_resolver_fake",
         "//test/core/util:gpr_test_util",
         "//test/core/util:grpc_test_util",
         "//test/cpp/util:test_util",
     ],
-    external_deps = [
-        "gmock",
-        "gtest",
-    ],
 )
 
 grpc_cc_test(
     name = "proto_server_reflection_test",
     srcs = ["proto_server_reflection_test.cc"],
+    external_deps = [
+        "gtest",
+        "gflags",
+    ],
     deps = [
         ":test_service_impl",
         "//:gpr",
@@ -262,15 +287,14 @@ grpc_cc_test(
         "//test/cpp/util:grpc++_proto_reflection_desc_db",
         "//test/cpp/util:test_util",
     ],
-    external_deps = [
-        "gtest",
-        "gflags",
-    ],
 )
 
 grpc_cc_test(
     name = "server_builder_plugin_test",
     srcs = ["server_builder_plugin_test.cc"],
+    external_deps = [
+        "gtest",
+    ],
     deps = [
         ":test_service_impl",
         "//:gpr",
@@ -283,14 +307,17 @@ grpc_cc_test(
         "//test/core/util:grpc_test_util",
         "//test/cpp/util:test_util",
     ],
-    external_deps = [
-        "gtest",
-    ],
 )
 
 grpc_cc_test(
     name = "server_crash_test",
     srcs = ["server_crash_test.cc"],
+    data = [
+        ":server_crash_test_client",
+    ],
+    external_deps = [
+        "gtest",
+    ],
     deps = [
         "//:gpr",
         "//:grpc",
@@ -302,18 +329,16 @@ grpc_cc_test(
         "//test/core/util:grpc_test_util",
         "//test/cpp/util:test_util",
     ],
-    external_deps = [
-        "gtest",
-    ],
-    data = [
-        ":server_crash_test_client",
-    ],
 )
 
 grpc_cc_binary(
     name = "server_crash_test_client",
     testonly = True,
     srcs = ["server_crash_test_client.cc"],
+    external_deps = [
+        "gflags",
+        "gtest",
+    ],
     deps = [
         "//:gpr",
         "//:grpc",
@@ -325,15 +350,14 @@ grpc_cc_binary(
         "//test/core/util:grpc_test_util",
         "//test/cpp/util:test_util",
     ],
-    external_deps = [
-        "gflags",
-        "gtest",
-    ],
 )
 
 grpc_cc_test(
     name = "shutdown_test",
     srcs = ["shutdown_test.cc"],
+    external_deps = [
+        "gtest",
+    ],
     deps = [
         "//:gpr",
         "//:grpc",
@@ -345,14 +369,14 @@ grpc_cc_test(
         "//test/core/util:grpc_test_util",
         "//test/cpp/util:test_util",
     ],
-    external_deps = [
-        "gtest",
-    ],
 )
 
 grpc_cc_test(
     name = "streaming_throughput_test",
     srcs = ["streaming_throughput_test.cc"],
+    external_deps = [
+        "gtest",
+    ],
     deps = [
         "//:gpr",
         "//:grpc",
@@ -364,14 +388,14 @@ grpc_cc_test(
         "//test/core/util:grpc_test_util",
         "//test/cpp/util:test_util",
     ],
-    external_deps = [
-        "gtest",
-    ],
 )
 
 grpc_cc_test(
     name = "thread_stress_test",
     srcs = ["thread_stress_test.cc"],
+    external_deps = [
+        "gtest",
+    ],
     deps = [
         "//:gpr",
         "//:grpc",
@@ -383,7 +407,4 @@ grpc_cc_test(
         "//test/core/util:grpc_test_util",
         "//test/cpp/util:test_util",
     ],
-    external_deps = [
-        "gtest",
-    ],
 )
diff --git a/test/cpp/end2end/async_end2end_test.cc b/test/cpp/end2end/async_end2end_test.cc
index 1ea087e706..44cd81a6a4 100644
--- a/test/cpp/end2end/async_end2end_test.cc
+++ b/test/cpp/end2end/async_end2end_test.cc
@@ -34,8 +34,8 @@
 #include <grpc/support/time.h>
 #include <grpc/support/tls.h>
 
+#include "src/core/lib/gpr/env.h"
 #include "src/core/lib/iomgr/port.h"
-#include "src/core/lib/support/env.h"
 #include "src/proto/grpc/health/v1/health.grpc.pb.h"
 #include "src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.h"
 #include "src/proto/grpc/testing/echo.grpc.pb.h"
diff --git a/test/cpp/end2end/client_lb_end2end_test.cc b/test/cpp/end2end/client_lb_end2end_test.cc
index c6e9577f0c..328ad86061 100644
--- a/test/cpp/end2end/client_lb_end2end_test.cc
+++ b/test/cpp/end2end/client_lb_end2end_test.cc
@@ -19,6 +19,7 @@
 #include <algorithm>
 #include <memory>
 #include <mutex>
+#include <random>
 #include <thread>
 
 #include <grpc++/channel.h>
@@ -37,7 +38,7 @@
 #include "src/core/ext/filters/client_channel/resolver/fake/fake_resolver.h"
 #include "src/core/ext/filters/client_channel/subchannel_index.h"
 #include "src/core/lib/backoff/backoff.h"
-#include "src/core/lib/support/env.h"
+#include "src/core/lib/gpr/env.h"
 
 #include "src/proto/grpc/testing/echo.grpc.pb.h"
 #include "test/core/util/port.h"
@@ -456,7 +457,8 @@ TEST_F(ClientLbEnd2endTest, PickFirstManyUpdates) {
     grpc_subchannel_index_test_only_set_force_creation(force_creation);
     gpr_log(GPR_INFO, "Force subchannel creation: %d", force_creation);
     for (size_t i = 0; i < 1000; ++i) {
-      std::random_shuffle(ports.begin(), ports.end());
+      std::shuffle(ports.begin(), ports.end(),
+                   std::mt19937(std::random_device()()));
       SetNextResolution(ports);
       if (i % 10 == 0) CheckRpcSendOk();
     }
@@ -621,7 +623,8 @@ TEST_F(ClientLbEnd2endTest, RoundRobinManyUpdates) {
     ports.emplace_back(servers_[i]->port_);
   }
   for (size_t i = 0; i < 1000; ++i) {
-    std::random_shuffle(ports.begin(), ports.end());
+    std::shuffle(ports.begin(), ports.end(),
+                 std::mt19937(std::random_device()()));
     SetNextResolution(ports);
     if (i % 10 == 0) CheckRpcSendOk();
   }
@@ -673,6 +676,42 @@ TEST_F(ClientLbEnd2endTest, RoundRobinReresolve) {
   GPR_ASSERT(gpr_time_cmp(deadline, now) > 0);
 }
 
+TEST_F(ClientLbEnd2endTest, RoundRobinSingleReconnect) {
+  const int kNumServers = 3;
+  StartServers(kNumServers);
+  const auto ports = GetServersPorts();
+  ResetStub(ports, "round_robin");
+  SetNextResolution(ports);
+  for (size_t i = 0; i < kNumServers; ++i) WaitForServer(i);
+  for (size_t i = 0; i < servers_.size(); ++i) {
+    CheckRpcSendOk();
+    EXPECT_EQ(1, servers_[i]->service_.request_count()) << "for backend #" << i;
+  }
+  // One request should have gone to each server.
+  for (size_t i = 0; i < servers_.size(); ++i) {
+    EXPECT_EQ(1, servers_[i]->service_.request_count());
+  }
+  const auto pre_death = servers_[0]->service_.request_count();
+  // Kill the first server.
+  servers_[0]->Shutdown(true);
+  // Client request still succeed. May need retrying if RR had returned a pick
+  // before noticing the change in the server's connectivity.
+  while (!SendRpc())
+    ;  // Retry until success.
+  // Send a bunch of RPCs that should succeed.
+  for (int i = 0; i < 10 * kNumServers; ++i) CheckRpcSendOk();
+  const auto post_death = servers_[0]->service_.request_count();
+  // No requests have gone to the deceased server.
+  EXPECT_EQ(pre_death, post_death);
+  // Bring the first server back up.
+  servers_[0].reset(new ServerData(server_host_, ports[0]));
+  // Requests should start arriving at the first server either right away (if
+  // the server managed to start before the RR policy retried the subchannel) or
+  // after the subchannel retry delay otherwise (RR's subchannel retried before
+  // the server was fully back up).
+  WaitForServer(0);
+}
+
 }  // namespace
 }  // namespace testing
 }  // namespace grpc
diff --git a/test/cpp/end2end/end2end_test.cc b/test/cpp/end2end/end2end_test.cc
index 4c8dfe0f40..e25de810f1 100644
--- a/test/cpp/end2end/end2end_test.cc
+++ b/test/cpp/end2end/end2end_test.cc
@@ -35,8 +35,8 @@
 #include <grpc/support/thd.h>
 #include <grpc/support/time.h>
 
+#include "src/core/lib/gpr/env.h"
 #include "src/core/lib/security/credentials/credentials.h"
-#include "src/core/lib/support/env.h"
 #include "src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.h"
 #include "src/proto/grpc/testing/echo.grpc.pb.h"
 #include "test/core/util/port.h"
@@ -1609,7 +1609,7 @@ TEST_P(SecureEnd2endTest, AuthMetadataPluginKeyFailure) {
 
   Status s = stub_->Echo(&context, request, &response);
   EXPECT_FALSE(s.ok());
-  EXPECT_EQ(s.error_code(), StatusCode::UNAUTHENTICATED);
+  EXPECT_EQ(s.error_code(), StatusCode::UNAVAILABLE);
 }
 
 TEST_P(SecureEnd2endTest, AuthMetadataPluginValueFailure) {
@@ -1626,7 +1626,7 @@ TEST_P(SecureEnd2endTest, AuthMetadataPluginValueFailure) {
 
   Status s = stub_->Echo(&context, request, &response);
   EXPECT_FALSE(s.ok());
-  EXPECT_EQ(s.error_code(), StatusCode::UNAUTHENTICATED);
+  EXPECT_EQ(s.error_code(), StatusCode::UNAVAILABLE);
 }
 
 TEST_P(SecureEnd2endTest, NonBlockingAuthMetadataPluginFailure) {
@@ -1644,7 +1644,7 @@ TEST_P(SecureEnd2endTest, NonBlockingAuthMetadataPluginFailure) {
 
   Status s = stub_->Echo(&context, request, &response);
   EXPECT_FALSE(s.ok());
-  EXPECT_EQ(s.error_code(), StatusCode::UNAUTHENTICATED);
+  EXPECT_EQ(s.error_code(), StatusCode::UNAVAILABLE);
   EXPECT_EQ(s.error_message(),
             grpc::string("Getting metadata from plugin failed with error: ") +
                 kTestCredsPluginErrorMsg);
@@ -1705,7 +1705,7 @@ TEST_P(SecureEnd2endTest, BlockingAuthMetadataPluginFailure) {
 
   Status s = stub_->Echo(&context, request, &response);
   EXPECT_FALSE(s.ok());
-  EXPECT_EQ(s.error_code(), StatusCode::UNAUTHENTICATED);
+  EXPECT_EQ(s.error_code(), StatusCode::UNAVAILABLE);
   EXPECT_EQ(s.error_message(),
             grpc::string("Getting metadata from plugin failed with error: ") +
                 kTestCredsPluginErrorMsg);
diff --git a/test/cpp/end2end/exception_test.cc b/test/cpp/end2end/exception_test.cc
new file mode 100644
index 0000000000..76272ad08a
--- /dev/null
+++ b/test/cpp/end2end/exception_test.cc
@@ -0,0 +1,119 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <exception>
+#include <memory>
+
+#include <grpc++/channel.h>
+#include <grpc++/client_context.h>
+#include <grpc++/server.h>
+#include <grpc++/server_builder.h>
+#include <grpc++/server_context.h>
+#include <grpc/impl/codegen/port_platform.h>
+
+#include "src/proto/grpc/testing/echo.grpc.pb.h"
+#include "test/core/util/test_config.h"
+
+#include <gtest/gtest.h>
+
+namespace grpc {
+namespace testing {
+
+const char* kErrorMessage = "This service caused an exception";
+
+#if GRPC_ALLOW_EXCEPTIONS
+class ExceptingServiceImpl : public ::grpc::testing::EchoTestService::Service {
+ public:
+  Status Echo(ServerContext* server_context, const EchoRequest* request,
+              EchoResponse* response) override {
+    throw - 1;
+  }
+  Status RequestStream(ServerContext* context,
+                       ServerReader<EchoRequest>* reader,
+                       EchoResponse* response) override {
+    throw ServiceException();
+  }
+
+ private:
+  class ServiceException final : public std::exception {
+   public:
+    ServiceException() {}
+
+   private:
+    const char* what() const noexcept override { return kErrorMessage; }
+  };
+};
+
+class ExceptionTest : public ::testing::Test {
+ protected:
+  ExceptionTest() {}
+
+  void SetUp() override {
+    ServerBuilder builder;
+    builder.RegisterService(&service_);
+    server_ = builder.BuildAndStart();
+  }
+
+  void TearDown() override { server_->Shutdown(); }
+
+  void ResetStub() {
+    channel_ = server_->InProcessChannel(ChannelArguments());
+    stub_ = grpc::testing::EchoTestService::NewStub(channel_);
+  }
+
+  std::shared_ptr<Channel> channel_;
+  std::unique_ptr<grpc::testing::EchoTestService::Stub> stub_;
+  std::unique_ptr<Server> server_;
+  ExceptingServiceImpl service_;
+};
+
+TEST_F(ExceptionTest, Unary) {
+  ResetStub();
+  EchoRequest request;
+  EchoResponse response;
+  request.set_message("test");
+  ClientContext context;
+
+  Status s = stub_->Echo(&context, request, &response);
+  EXPECT_FALSE(s.ok());
+  EXPECT_EQ(s.error_code(), StatusCode::UNKNOWN);
+}
+
+TEST_F(ExceptionTest, RequestStream) {
+  ResetStub();
+  EchoResponse response;
+  ClientContext context;
+
+  auto stream = stub_->RequestStream(&context, &response);
+  stream->WritesDone();
+  Status s = stream->Finish();
+
+  EXPECT_FALSE(s.ok());
+  EXPECT_EQ(s.error_code(), StatusCode::UNKNOWN);
+}
+
+#endif  // GRPC_ALLOW_EXCEPTIONS
+
+}  // namespace testing
+}  // namespace grpc
+
+int main(int argc, char** argv) {
+  grpc_test_init(argc, argv);
+  ::testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}
diff --git a/test/cpp/end2end/grpclb_end2end_test.cc b/test/cpp/end2end/grpclb_end2end_test.cc
index d4ee6b429f..815dfd0c4f 100644
--- a/test/cpp/end2end/grpclb_end2end_test.cc
+++ b/test/cpp/end2end/grpclb_end2end_test.cc
@@ -34,8 +34,8 @@
 #include <grpc/support/time.h>
 
 #include "src/core/ext/filters/client_channel/resolver/fake/fake_resolver.h"
+#include "src/core/lib/gpr/env.h"
 #include "src/core/lib/iomgr/sockaddr.h"
-#include "src/core/lib/support/env.h"
 
 #include "test/core/util/port.h"
 #include "test/core/util/test_config.h"
diff --git a/test/cpp/end2end/shutdown_test.cc b/test/cpp/end2end/shutdown_test.cc
index 14ba7c96cc..9119102f7a 100644
--- a/test/cpp/end2end/shutdown_test.cc
+++ b/test/cpp/end2end/shutdown_test.cc
@@ -28,7 +28,7 @@
 #include <grpc/support/log.h>
 #include <grpc/support/sync.h>
 
-#include "src/core/lib/support/env.h"
+#include "src/core/lib/gpr/env.h"
 #include "src/proto/grpc/testing/echo.grpc.pb.h"
 #include "test/core/util/port.h"
 #include "test/core/util/test_config.h"
diff --git a/test/cpp/grpclb/grpclb_test.cc b/test/cpp/grpclb/grpclb_test.cc
index 38b65fbc78..d241594af1 100644
--- a/test/cpp/grpclb/grpclb_test.cc
+++ b/test/cpp/grpclb/grpclb_test.cc
@@ -40,11 +40,11 @@
 #include "src/core/ext/filters/client_channel/resolver/fake/fake_resolver.h"
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/tmpfile.h"
 #include "src/core/lib/iomgr/sockaddr.h"
 #include "src/core/lib/security/credentials/fake/fake_credentials.h"
-#include "src/core/lib/support/env.h"
-#include "src/core/lib/support/string.h"
-#include "src/core/lib/support/tmpfile.h"
 #include "src/core/lib/surface/channel.h"
 #include "src/core/lib/surface/server.h"
 #include "test/core/end2end/cq_verifier.h"
diff --git a/test/cpp/interop/client.cc b/test/cpp/interop/client.cc
index 716fb96382..8958b9884d 100644
--- a/test/cpp/interop/client.cc
+++ b/test/cpp/interop/client.cc
@@ -27,7 +27,7 @@
 #include <grpc/support/log.h>
 #include <grpc/support/useful.h>
 
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/cpp/interop/client_helper.h"
 #include "test/cpp/interop/interop_client.h"
 #include "test/cpp/util/test_config.h"
diff --git a/test/cpp/interop/http2_client.cc b/test/cpp/interop/http2_client.cc
index 2de7abcf17..7a9e3ced6a 100644
--- a/test/cpp/interop/http2_client.cc
+++ b/test/cpp/interop/http2_client.cc
@@ -30,7 +30,7 @@
 #include "src/proto/grpc/testing/test.grpc.pb.h"
 #include "test/cpp/interop/http2_client.h"
 
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "test/cpp/util/create_test_channel.h"
 #include "test/cpp/util/test_config.h"
 
diff --git a/test/cpp/interop/interop_server.cc b/test/cpp/interop/interop_server.cc
index 30bd8bfef8..7cfdb2f9e9 100644
--- a/test/cpp/interop/interop_server.cc
+++ b/test/cpp/interop/interop_server.cc
@@ -31,7 +31,7 @@
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
 
-#include "src/core/lib/support/string.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/transport/byte_stream.h"
 #include "src/proto/grpc/testing/empty.pb.h"
 #include "src/proto/grpc/testing/messages.pb.h"
diff --git a/test/cpp/interop/interop_test.cc b/test/cpp/interop/interop_test.cc
index 1bf0d8d10f..563b7abb5e 100644
--- a/test/cpp/interop/interop_test.cc
+++ b/test/cpp/interop/interop_test.cc
@@ -37,8 +37,8 @@
 #include "test/core/util/port.h"
 #include "test/cpp/util/test_config.h"
 
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/socket_utils_posix.h"
-#include "src/core/lib/support/string.h"
 
 DEFINE_string(extra_server_flags, "", "Extra flags to pass to server.");
 
diff --git a/test/cpp/microbenchmarks/bm_arena.cc b/test/cpp/microbenchmarks/bm_arena.cc
index 5b7c611919..69c8c1c029 100644
--- a/test/cpp/microbenchmarks/bm_arena.cc
+++ b/test/cpp/microbenchmarks/bm_arena.cc
@@ -18,7 +18,7 @@
 
 /* Benchmark arenas */
 
-#include "src/core/lib/support/arena.h"
+#include "src/core/lib/gpr/arena.h"
 #include "test/cpp/microbenchmarks/helpers.h"
 #include "third_party/benchmark/include/benchmark/benchmark.h"
 
diff --git a/test/cpp/microbenchmarks/bm_closure.cc b/test/cpp/microbenchmarks/bm_closure.cc
index 4d5a82c3f6..6d88faecc0 100644
--- a/test/cpp/microbenchmarks/bm_closure.cc
+++ b/test/cpp/microbenchmarks/bm_closure.cc
@@ -22,10 +22,10 @@
 #include <grpc/grpc.h>
 #include <sstream>
 
+#include "src/core/lib/gpr/spinlock.h"
 #include "src/core/lib/iomgr/closure.h"
 #include "src/core/lib/iomgr/combiner.h"
 #include "src/core/lib/iomgr/exec_ctx.h"
-#include "src/core/lib/support/spinlock.h"
 
 #include "test/cpp/microbenchmarks/helpers.h"
 
diff --git a/test/cpp/naming/resolver_component_test.cc b/test/cpp/naming/resolver_component_test.cc
index 3481d9d1aa..8b5523f01a 100644
--- a/test/cpp/naming/resolver_component_test.cc
+++ b/test/cpp/naming/resolver_component_test.cc
@@ -37,13 +37,13 @@
 #include "src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.h"
 #include "src/core/ext/filters/client_channel/resolver_registry.h"
 #include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
 #include "src/core/lib/iomgr/combiner.h"
 #include "src/core/lib/iomgr/executor.h"
 #include "src/core/lib/iomgr/iomgr.h"
 #include "src/core/lib/iomgr/resolve_address.h"
 #include "src/core/lib/iomgr/sockaddr_utils.h"
-#include "src/core/lib/support/env.h"
-#include "src/core/lib/support/string.h"
 #include "test/core/util/port.h"
 #include "test/core/util/test_config.h"
 
diff --git a/test/cpp/naming/resolver_component_tests_runner_invoker.cc b/test/cpp/naming/resolver_component_tests_runner_invoker.cc
index 0beb27de1b..65f11243fe 100644
--- a/test/cpp/naming/resolver_component_tests_runner_invoker.cc
+++ b/test/cpp/naming/resolver_component_tests_runner_invoker.cc
@@ -32,7 +32,7 @@
 #include "test/cpp/util/subprocess.h"
 #include "test/cpp/util/test_config.h"
 
-#include "src/core/lib/support/env.h"
+#include "src/core/lib/gpr/env.h"
 #include "test/core/util/port.h"
 
 DEFINE_bool(
diff --git a/test/cpp/qps/driver.cc b/test/cpp/qps/driver.cc
index 22d039d4b7..2f765a6d1e 100644
--- a/test/cpp/qps/driver.cc
+++ b/test/cpp/qps/driver.cc
@@ -31,8 +31,8 @@
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 
+#include "src/core/lib/gpr/env.h"
 #include "src/core/lib/profiling/timers.h"
-#include "src/core/lib/support/env.h"
 #include "src/proto/grpc/testing/services.grpc.pb.h"
 #include "test/core/util/port.h"
 #include "test/core/util/test_config.h"
diff --git a/test/cpp/qps/json_run_localhost.cc b/test/cpp/qps/json_run_localhost.cc
index db8b2a3943..948c3088e6 100644
--- a/test/cpp/qps/json_run_localhost.cc
+++ b/test/cpp/qps/json_run_localhost.cc
@@ -26,7 +26,7 @@
 
 #include <grpc/support/log.h>
 
-#include "src/core/lib/support/env.h"
+#include "src/core/lib/gpr/env.h"
 #include "test/core/util/port.h"
 #include "test/cpp/util/subprocess.h"
 
diff --git a/test/distrib/cpp/run_distrib_test_cmake.bat b/test/distrib/cpp/run_distrib_test_cmake.bat
index 047846b0f1..f920768ae3 100644
--- a/test/distrib/cpp/run_distrib_test_cmake.bat
+++ b/test/distrib/cpp/run_distrib_test_cmake.bat
@@ -58,13 +58,13 @@ cmake -DCMAKE_INSTALL_PREFIX=%INSTALL_DIR% -DOPENSSL_ROOT_DIR=%OPENSSL_DIR% -DOP
 cmake --build . --config Release --target install || goto :error
 cd ../..
 
-# Build helloworld example using cmake
+@rem Build helloworld example using cmake
 cd examples/cpp/helloworld
 mkdir cmake
 cd cmake
 mkdir build
 cd build
-cmake -DCMAKE_INSTALL_PREFIX=%INSTALL_DIR% ../.. || goto :error
+cmake -DCMAKE_INSTALL_PREFIX=%INSTALL_DIR% -DOPENSSL_ROOT_DIR=%OPENSSL_DIR% -DOPENSSL_INCLUDE_DIR=%OPENSSL_DIR%/include ../.. || goto :error
 cmake --build . --config Release || goto :error
 cd ../../../../..