Preparation CL for WebRTC performance test using promise-based getStats

chrome/browser/media/webrtc/rtc_stats_dictionary_unittest.cc

+// Copyright 2016 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 "chrome/browser/media/webrtc/rtc_stats_dictionary.h"
+
+#include <memory>
+#include <vector>
+
+#include "base/json/json_reader.h"
+#include "base/logging.h"
+#include "base/macros.h"
+#include "base/memory/ref_counted.h"
+#include "base/values.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace content {
+
+namespace {
+
+const char kTestStatsReportJson[] =
+  "{\n"
+  "  \"GarbageA\": {\n"
+  "    \"id\": \"GarbageA\",\n"
+  "    \"timestamp\": 0.0,\n"
+  "    \"type\": \"garbage\"\n"
+  "  },\n"
+  "  \"RTCTestStatsID\": {\n"
+  "    \"id\": \"RTCTestStatsID\",\n"
+  "    \"timestamp\": 13.37,\n"
+  "    \"type\": \"test\",\n"
+  "    \"boolean\": true,\n"
+  "    \"number\": 42,\n"
+  "    \"string\": \"text\",\n"
+  "    \"sequenceBoolean\": [ true ],\n"
+  "    \"sequenceNumber\": [ 42 ],\n"
+  "    \"sequenceString\": [ \"text\" ]\n"
+  "  },\n"
+  "  \"GarbageB\": {\n"
+  "    \"id\": \"GarbageB\",\n"
+  "    \"timestamp\": 0.0,\n"
+  "    \"type\": \"garbage\"\n"
+  "  }\n"
+  "}";
+
+class RTCStatsDictionaryTest : public testing::Test {
+ public:
+  RTCStatsDictionaryTest() {
+    std::unique_ptr<base::Value> value =
+        base::JSONReader::Read(kTestStatsReportJson);
+    CHECK(value);
+    base::DictionaryValue* dictionary;
+    CHECK(value->GetAsDictionary(&dictionary));
+    ignore_result(value.release());
+    report_ = new RTCStatsReportDictionary(
+        std::unique_ptr<base::DictionaryValue>(dictionary));
+  }
+
+ protected:
+  scoped_refptr<RTCStatsReportDictionary> report_;
+};
+
+TEST_F(RTCStatsDictionaryTest, ReportGetStats) {
+  EXPECT_FALSE(report_->Get("InvalidID"));
+  EXPECT_TRUE(report_->Get("GarbageA"));
+  EXPECT_TRUE(report_->Get("RTCTestStatsID"));
+  EXPECT_TRUE(report_->Get("GarbageB"));
+}
+
+TEST_F(RTCStatsDictionaryTest, ReportFilterStats) {
+  std::vector<RTCStatsDictionary> filtered_stats = report_->Filter(
+      [](const RTCStatsDictionary& stats) -> bool {
+          return false;
+      });
+  EXPECT_EQ(filtered_stats.size(), 0u);
+
+  filtered_stats = report_->Filter(
+      [](const RTCStatsDictionary& stats) -> bool {
+          return true;
+      });
+  EXPECT_EQ(filtered_stats.size(), 3u);
+
+  filtered_stats = report_->Filter(
+      [](const RTCStatsDictionary& stats) -> bool {
+          return stats.GetString("id") == "RTCTestStatsID";
+      });
+  EXPECT_EQ(filtered_stats.size(), 1u);
+}
+
+TEST_F(RTCStatsDictionaryTest, StatsVerifyMembers) {
+  std::unique_ptr<RTCStatsDictionary> stats = report_->Get("RTCTestStatsID");
+  EXPECT_TRUE(stats);
+
+  EXPECT_FALSE(stats->IsBoolean("nonexistentMember"));
+  EXPECT_FALSE(stats->IsNumber("nonexistentMember"));
+  EXPECT_FALSE(stats->IsString("nonexistentMember"));
+  EXPECT_FALSE(stats->IsSequenceBoolean("nonexistentMember"));
+  EXPECT_FALSE(stats->IsSequenceNumber("nonexistentMember"));
+  EXPECT_FALSE(stats->IsSequenceString("nonexistentMember"));
+
+  ASSERT_TRUE(stats->IsBoolean("boolean"));
+  EXPECT_EQ(stats->GetBoolean("boolean"), true);
+
+  ASSERT_TRUE(stats->IsNumber("number"));
+  EXPECT_EQ(stats->GetNumber("number"), 42.0);
+
+  ASSERT_TRUE(stats->IsString("string"));
+  EXPECT_EQ(stats->GetString("string"), "text");
+
+  ASSERT_TRUE(stats->IsSequenceBoolean("sequenceBoolean"));
+  EXPECT_EQ(stats->GetSequenceBoolean("sequenceBoolean"),
+            std::vector<bool> { true });
+
+  ASSERT_TRUE(stats->IsSequenceNumber("sequenceNumber"));
+  EXPECT_EQ(stats->GetSequenceNumber("sequenceNumber"),
+            std::vector<double> { 42.0 });
+
+  ASSERT_TRUE(stats->IsSequenceString("sequenceString"));
+  EXPECT_EQ(stats->GetSequenceString("sequenceString"),
+            std::vector<std::string> { "text" });
+}
+
+TEST_F(RTCStatsDictionaryTest, RTCStatsDictionaryShouldKeepReportAlive) {
+  std::unique_ptr<RTCStatsDictionary> stats = report_->Get("RTCTestStatsID");
+  EXPECT_TRUE(stats);
+  report_ = nullptr;
+  EXPECT_EQ(stats->GetString("string"), "text");
+}
+
+}  // namespace
+
+}  // namespace content