1 files changed, 56 insertions, 0 deletions
diff --git a/test/cpp/util/channel_trace_proto_helper.cc b/test/cpp/util/channel_trace_proto_helper.cc
new file mode 100644
index 0000000000..fbc9f1501c
--- /dev/null
+++ b/test/cpp/util/channel_trace_proto_helper.cc
@@ -0,0 +1,56 @@
+/*
+ *
+ * Copyright 2018 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 "test/cpp/util/channel_trace_proto_helper.h"
+
+#include <google/protobuf/text_format.h>
+#include <google/protobuf/util/json_util.h>
+
+#include <grpc/grpc.h>
+#include <grpc/support/log.h>
+#include <gtest/gtest.h>
+
+#include "src/proto/grpc/channelz/channelz.pb.h"
+
+namespace grpc {
+namespace testing {
+
+void ValidateChannelTraceProtoJsonTranslation(char* tracer_json_c_str) {
+  std::string tracer_json_str(tracer_json_c_str);
+  grpc::channelz::ChannelTrace channel_trace;
+  google::protobuf::util::JsonParseOptions parse_options;
+  // If the following line is failing, then uncomment the last line of the
+  // comment, and uncomment the lines that print the two strings. You can
+  // then compare the output, and determine what fields are missing.
+  //
+  // options.ignore_unknown_fields = true;
+  ASSERT_EQ(google::protobuf::util::JsonStringToMessage(
+                tracer_json_str, &channel_trace, parse_options),
+            google::protobuf::util::Status::OK);
+  std::string proto_json_str;
+  ASSERT_EQ(google::protobuf::util::MessageToJsonString(channel_trace,
+                                                        &proto_json_str),
+            google::protobuf::util::Status::OK);
+  // uncomment these to compare the the json strings.
+  // gpr_log(GPR_ERROR, "tracer json: %s", tracer_json_str.c_str());
+  // gpr_log(GPR_ERROR, "proto  json: %s", proto_json_str.c_str());
+  ASSERT_EQ(tracer_json_str, proto_json_str);
+}
+
+}  // namespace testing
+}  // namespace grpc