Add DBusStatistics and DBusLogSource to log and show dbus stats

dbus/dbus_statistics_unittest.cc

Index: dbus/dbus_statistics_unittest.cc
diff --git a/dbus/dbus_statistics_unittest.cc b/dbus/dbus_statistics_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..f79aa3a98de56e3e0e835cadd3ff10e811b77e81
--- /dev/null
+++ b/dbus/dbus_statistics_unittest.cc
@@ -0,0 +1,98 @@
+// Copyright (c) 2012 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 "dbus/dbus_statistics.h"
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace dbus {
+
+class DBusStatisticsTest : public testing::Test {
+ public:
+  DBusStatisticsTest() {
+  }
+
+  virtual void SetUp() {
+    statistics::Initialize();
+  }
+
+  virtual void TearDown() {
+    statistics::Shutdown();
+  }
+};
+
+TEST_F(DBusStatisticsTest, TestDBusStats) {
+  int sent = 0, received = 0, blocking = 0;
+
+  // Add a sent call
+  statistics::AddSentMethodCall("service1", "interface1", "method1");
+  ASSERT_TRUE(statistics::testing::GetCalls(
+      "service1", "interface1", "method1", &sent, &received, &blocking));
+  ASSERT_EQ(1, sent);
+  ASSERT_EQ(0, received);
+  ASSERT_EQ(0, blocking);
+
+  // Add a received call
+  statistics::AddReceivedMethodCall("service1", "interface1", "method1");
+  ASSERT_TRUE(statistics::testing::GetCalls(
+      "service1", "interface1", "method1", &sent, &received, &blocking));
+  ASSERT_EQ(1, sent);
+  ASSERT_EQ(1, received);
+  ASSERT_EQ(0, blocking);
+
+  // Add a blocking call
+  statistics::AddBlockingSentMethodCall("service1", "interface1", "method1");
+  ASSERT_TRUE(statistics::testing::GetCalls(
+      "service1", "interface1", "method1", &sent, &received, &blocking));
+  ASSERT_EQ(1, sent);
+  ASSERT_EQ(1, received);
+  ASSERT_EQ(1, blocking);
+
+  // Add some more stats to exercise accessing multiple different stats.
+  statistics::AddSentMethodCall("service1", "interface1", "method2");
+  statistics::AddSentMethodCall("service1", "interface1", "method2");
+  statistics::AddReceivedMethodCall("service1", "interface1", "method2");
+
+  statistics::AddSentMethodCall("service1", "interface1", "method3");
+  statistics::AddSentMethodCall("service1", "interface1", "method3");
+  statistics::AddSentMethodCall("service1", "interface1", "method3");
+
+  statistics::AddSentMethodCall("service1", "interface2", "method1");
+
+  statistics::AddSentMethodCall("service1", "interface2", "method2");
+
+  statistics::AddSentMethodCall("service2", "interface1", "method1");
+
+  // Make sure all entries can be found in the set and their counts were
+  // incramented correctly.

[gauravsh, 2012/11/12 21:41:58]

NIT: incremented

[stevenjb, 2012/11/12 22:34:40]

Done.

+  ASSERT_TRUE(statistics::testing::GetCalls(
+      "service1", "interface1", "method1", &sent, &received, &blocking));
+  ASSERT_EQ(1, sent);
+  ASSERT_EQ(1, received);
+  ASSERT_TRUE(statistics::testing::GetCalls(
+      "service1", "interface1", "method2", &sent, &received, &blocking));
+  ASSERT_EQ(2, sent);
+  ASSERT_EQ(1, received);
+  ASSERT_TRUE(statistics::testing::GetCalls(
+      "service1", "interface1", "method3", &sent, &received, &blocking));
+  ASSERT_EQ(3, sent);
+  ASSERT_EQ(0, received);
+  ASSERT_TRUE(statistics::testing::GetCalls(
+      "service1", "interface2", "method1", &sent, &received, &blocking));
+  ASSERT_EQ(1, sent);
+  ASSERT_EQ(0, received);
+  ASSERT_TRUE(statistics::testing::GetCalls(
+      "service1", "interface2", "method2", &sent, &received, &blocking));
+  ASSERT_EQ(1, sent);
+  ASSERT_EQ(0, received);
+  ASSERT_TRUE(statistics::testing::GetCalls(
+      "service2", "interface1", "method1", &sent, &received, &blocking));
+  ASSERT_EQ(1, sent);
+  ASSERT_EQ(0, received);
+
+  ASSERT_FALSE(statistics::testing::GetCalls(
+      "service1", "interface3", "method2", &sent, &received, &blocking));
+}
+
+}  // namespace dbus