Enabling hermetic testing for running tests on Foundry.

3 files changed, 46 insertions, 1 deletions

diff --git a/test/core/util/BUILD b/test/core/util/BUILD
index 6443553466..9884e04627 100644
--- a/test/core/util/BUILD
+++ b/test/core/util/BUILD
@@ -53,6 +53,7 @@ grpc_cc_library(
         "parse_hexstring.cc",
         "passthru_endpoint.cc",
         "port.cc",
+        "port_hermetic.cc",
         "port_server_client.cc",
         "reconnect_server.cc",
         "slice_splitter.cc",
@@ -73,6 +74,9 @@ grpc_cc_library(
         "tracer_util.h",
         "trickle_endpoint.h",
     ],
+    defines = [
+        "GRPC_HERMETIC_TESTS=1",
+    ],
     language = "C++",
     deps = [
         ":gpr_test_util",
diff --git a/test/core/util/port_hermetic.cc b/test/core/util/port_hermetic.cc
new file mode 100644
index 0000000000..3650816763
--- /dev/null
+++ b/test/core/util/port_hermetic.cc
@@ -0,0 +1,41 @@
+/*
+ *
+ * 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/iomgr/port.h"
+#include "test/core/util/test_config.h"
+#if defined(GRPC_HERMETIC_TESTS)
+
+#include "test/core/util/port.h"
+
+#define LOWER_PORT 49152
+static int s_allocated_port = LOWER_PORT;
+
+int grpc_pick_unused_port_or_die(void) {
+  int allocated_port = s_allocated_port++;
+  if (s_allocated_port == 65536) {
+    s_allocated_port = LOWER_PORT;
+  }
+
+  return allocated_port;
+}
+
+void grpc_recycle_unused_port(int port) {
+  (void) port;
+}
+
+#endif /* GRPC_HERMETIC_TESTS */
diff --git a/test/core/util/test_config.h b/test/core/util/test_config.h
index 775ffac949..ee60441653 100644
--- a/test/core/util/test_config.h
+++ b/test/core/util/test_config.h
@@ -33,7 +33,7 @@ gpr_timespec grpc_timeout_seconds_to_deadline(int64_t time_s);
 /* Converts a given timeout (in milliseconds) to a deadline. */
 gpr_timespec grpc_timeout_milliseconds_to_deadline(int64_t time_ms);
 
-#ifndef GRPC_TEST_CUSTOM_PICK_PORT
+#if !defined(GRPC_TEST_CUSTOM_PICK_PORT) && !defined(GRPC_HERMETIC_TESTS)
 #define GRPC_TEST_PICK_PORT
 #endif