Trace-based benchmarking via a mojo app.

apps/benchmark/event_unittest.cc

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "apps/benchmark/event.h"
+
+#include <vector>
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace benchmark {
+
+namespace {
+
+TEST(GetEventsTest, Empty) {
+  std::vector<Event> events;
+  EXPECT_TRUE(GetEvents("[]", &events));
+  EXPECT_EQ(0u, events.size());
+}
+
+TEST(GetEventsTest, Invalid) {
+  std::vector<Event> events;
+  EXPECT_FALSE(GetEvents("", &events));
+  EXPECT_FALSE(GetEvents("[", &events));
+  EXPECT_FALSE(GetEvents("]", &events));
+  EXPECT_FALSE(GetEvents("[,]", &events));
+}
+
+TEST(GetEventsTest, Typical) {
+  std::string event1 =
+      "{\"pid\":7845,\"tid\":7845,\"ts\":1988539886444,"
+      "\"ph\":\"X\",\"cat\":\"toplevel\",\"name\":\"MessageLoop::RunTask\","
+      "\"args\":{\"src_file\":\"../../mojo/message_pump/handle_watcher.cc\","
+      "\"src_func\":\"RemoveAndNotify\"},\"dur\":647,\"tdur\":633,"
+      "\"tts\":25295}";
+  std::string event2 =
+      "{\"pid\":8238,\"tid\":8264,\"ts\":1988975370433,\"ph\":\"X\","
+      "\"cat\":\"gpu\",\"name\":\"GLES2::WaitForCmd\",\"args\":{},\"dur\":7288,"
+      "\"tdur\":212,\"tts\":6368}";
+
+  std::string trace_json = "[" + event1 + "," + event2 + "]";
+  std::vector<Event> events;
+  ASSERT_TRUE(GetEvents(trace_json, &events));
+  ASSERT_EQ(2u, events.size());
+
+  EXPECT_EQ("MessageLoop::RunTask", events[0].name);
+  EXPECT_EQ("toplevel", events[0].category);
+  EXPECT_EQ(base::TimeTicks::FromInternalValue(1988539886444),
+            events[0].timestamp);
+  EXPECT_EQ(base::TimeDelta::FromInternalValue(647), events[0].duration);
+
+  EXPECT_EQ("GLES2::WaitForCmd", events[1].name);
+  EXPECT_EQ("gpu", events[1].category);
+  EXPECT_EQ(base::TimeTicks::FromInternalValue(1988975370433),
+            events[1].timestamp);
+  EXPECT_EQ(base::TimeDelta::FromInternalValue(7288), events[1].duration);
+}
+
+TEST(GetEventsTest, NoDuration) {
+  std::string event =
+      "{\"pid\":8238,\"tid\":8238,\"ts\":1988978463403,\"ph\":\"X\","
+      "\"cat\":\"toplevel\",\"name\":\"MessageLoop::RunTask\",\"args\":"
+      "{\"src_file\":\"../../mojo/message_pump/handle_watcher.cc\","
+      "\"src_func\":\"RemoveAndNotify\"},\"tdur\":0,\"tts\":22812}";
+
+  std::string trace_json = "[" + event + "]";
+  std::vector<Event> events;
+  ASSERT_TRUE(GetEvents(trace_json, &events));
+  ASSERT_EQ(1u, events.size());
+
+  EXPECT_EQ("MessageLoop::RunTask", events[0].name);
+  EXPECT_EQ("toplevel", events[0].category);
+  EXPECT_EQ(base::TimeTicks::FromInternalValue(1988978463403),
+            events[0].timestamp);
+  EXPECT_EQ(base::TimeDelta::FromInternalValue(0), events[0].duration);
+}
+
+}  // namespace
+
+}  // namespace benchmark