1 files changed, 121 insertions, 0 deletions
diff --git a/test/core/channel/channelz_registry_test.cc b/test/core/channel/channelz_registry_test.cc
new file mode 100644
index 0000000000..37696dc0e8
--- /dev/null
+++ b/test/core/channel/channelz_registry_test.cc
@@ -0,0 +1,121 @@
+/*
+ *
+ * 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 <stdlib.h>
+#include <string.h>
+
+#include <gtest/gtest.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/channel/channel_trace.h"
+#include "src/core/lib/channel/channelz_registry.h"
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/json/json.h"
+
+#include "test/core/util/test_config.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+namespace grpc_core {
+namespace testing {
+
+// Tests basic ChannelTrace functionality like construction, adding trace, and
+// lookups by uuid.
+TEST(ChannelzRegistryTest, UuidStartsAboveZeroTest) {
+  int object_to_register;
+  intptr_t uuid = ChannelzRegistry::Register(&object_to_register);
+  EXPECT_GT(uuid, 0) << "First uuid chose must be greater than zero. Zero if "
+                        "reserved according to "
+                        "https://github.com/grpc/proposal/blob/master/"
+                        "A14-channelz.md";
+  ChannelzRegistry::Unregister(uuid);
+}
+
+TEST(ChannelzRegistryTest, UuidsAreIncreasing) {
+  int object_to_register;
+  std::vector<intptr_t> uuids;
+  for (int i = 0; i < 10; ++i) {
+    // reregister the same object. It's ok since we are just testing uuids
+    uuids.push_back(ChannelzRegistry::Register(&object_to_register));
+  }
+  for (size_t i = 1; i < uuids.size(); ++i) {
+    EXPECT_LT(uuids[i - 1], uuids[i]) << "Uuids must always be increasing";
+  }
+}
+
+TEST(ChannelzRegistryTest, RegisterGetTest) {
+  int object_to_register = 42;
+  intptr_t uuid = ChannelzRegistry::Register(&object_to_register);
+  int* retrieved = ChannelzRegistry::Get<int>(uuid);
+  EXPECT_EQ(&object_to_register, retrieved);
+}
+
+TEST(ChannelzRegistryTest, MultipleTypeTest) {
+  int int_to_register = 42;
+  intptr_t int_uuid = ChannelzRegistry::Register(&int_to_register);
+  std::string str_to_register = "hello world";
+  intptr_t str_uuid = ChannelzRegistry::Register(&str_to_register);
+  int* retrieved_int = ChannelzRegistry::Get<int>(int_uuid);
+  std::string* retrieved_str = ChannelzRegistry::Get<std::string>(str_uuid);
+  EXPECT_EQ(&int_to_register, retrieved_int);
+  EXPECT_EQ(&str_to_register, retrieved_str);
+}
+
+namespace {
+class Foo {
+ public:
+  int bar;
+};
+}  // namespace
+
+TEST(ChannelzRegistryTest, CustomObjectTest) {
+  Foo* foo = New<Foo>();
+  foo->bar = 1024;
+  intptr_t uuid = ChannelzRegistry::Register(foo);
+  Foo* retrieved = ChannelzRegistry::Get<Foo>(uuid);
+  EXPECT_EQ(foo, retrieved);
+  Delete(foo);
+}
+
+TEST(ChannelzRegistryTest, NullIfNotPresentTest) {
+  int object_to_register = 42;
+  intptr_t uuid = ChannelzRegistry::Register(&object_to_register);
+  // try to pull out a uuid that does not exist.
+  int* nonexistant = ChannelzRegistry::Get<int>(uuid + 1);
+  EXPECT_EQ(nonexistant, nullptr);
+  int* retrieved = ChannelzRegistry::Get<int>(uuid);
+  EXPECT_EQ(object_to_register, *retrieved);
+  EXPECT_EQ(&object_to_register, retrieved);
+}
+
+}  // namespace testing
+}  // namespace grpc_core
+
+int main(int argc, char** argv) {
+  grpc_test_init(argc, argv);
+  grpc_init();
+  ::testing::InitGoogleTest(&argc, argv);
+  int ret = RUN_ALL_TESTS();
+  grpc_shutdown();
+  return ret;
+}