1 files changed, 107 insertions, 0 deletions
diff --git a/base/event_trace_provider_win_unittest.cc b/base/event_trace_provider_win_unittest.cc
new file mode 100644
index 0000000..2ffae82
--- /dev/null
+++ b/base/event_trace_provider_win_unittest.cc
@@ -0,0 +1,107 @@
+// Copyright (c) 2009 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.
+//
+// Unit tests for event trace provider.
+#include "base/event_trace_provider_win.h"
+#include <new>
+#include "testing/gtest/include/gtest/gtest.h"
+#include <initguid.h>  // NOLINT - has to be last
+
+namespace {
+
+// {7F0FD37F-FA3C-4cd6-9242-DF60967A2CB2}
+DEFINE_GUID(kTestProvider,
+  0x7f0fd37f, 0xfa3c, 0x4cd6, 0x92, 0x42, 0xdf, 0x60, 0x96, 0x7a, 0x2c, 0xb2);
+
+// {7F0FD37F-FA3C-4cd6-9242-DF60967A2CB2}
+DEFINE_GUID(kTestEventClass,
+  0x7f0fd37f, 0xfa3c, 0x4cd6, 0x92, 0x42, 0xdf, 0x60, 0x96, 0x7a, 0x2c, 0xb2);
+
+}  // namespace
+
+TEST(EtwTraceProviderTest, ToleratesPreCreateInvocations) {
+  // Because the trace provider is used in logging, it's important that
+  // it be possible to use static provider instances without regard to
+  // whether they've been constructed or destructed.
+  // The interface of the class is designed to tolerate this usage.
+  char buf[sizeof(EtwTraceProvider)] = {0};
+  EtwTraceProvider& provider = reinterpret_cast<EtwTraceProvider&>(buf);
+
+  EXPECT_EQ(NULL, provider.registration_handle());
+  EXPECT_EQ(NULL, provider.session_handle());
+  EXPECT_EQ(0, provider.enable_flags());
+  EXPECT_EQ(0, provider.enable_level());
+
+  EXPECT_FALSE(provider.ShouldLog(TRACE_LEVEL_FATAL, 0xfffffff));
+
+  // We expect these not to crash.
+  provider.Log(kTestEventClass, 0, TRACE_LEVEL_FATAL, "foo");
+  provider.Log(kTestEventClass, 0, TRACE_LEVEL_FATAL, L"foo");
+
+  EtwMofEvent<1> dummy(kTestEventClass, 0, TRACE_LEVEL_FATAL);
+  DWORD data = 0;
+  dummy.SetField(0, sizeof(data), &data);
+  provider.Log(dummy.get());
+
+  // Placement-new the provider into our buffer.
+  new (buf) EtwTraceProvider(kTestProvider);
+
+  // Registration is now safe.
+  EXPECT_EQ(ERROR_SUCCESS, provider.Register());
+
+  // Destruct the instance, this should unregister it.
+  provider.EtwTraceProvider::~EtwTraceProvider();
+
+  // And post-destruction, all of the above should still be safe.
+  EXPECT_EQ(NULL, provider.registration_handle());
+  EXPECT_EQ(NULL, provider.session_handle());
+  EXPECT_EQ(0, provider.enable_flags());
+  EXPECT_EQ(0, provider.enable_level());
+
+  EXPECT_FALSE(provider.ShouldLog(TRACE_LEVEL_FATAL, 0xfffffff));
+
+  // We expect these not to crash.
+  provider.Log(kTestEventClass, 0, TRACE_LEVEL_FATAL, "foo");
+  provider.Log(kTestEventClass, 0, TRACE_LEVEL_FATAL, L"foo");
+  provider.Log(dummy.get());
+}
+
+TEST(EtwTraceProviderTest, Initialize) {
+  EtwTraceProvider provider(kTestProvider);
+
+  EXPECT_EQ(NULL, provider.registration_handle());
+  EXPECT_EQ(NULL, provider.session_handle());
+  EXPECT_EQ(0, provider.enable_flags());
+  EXPECT_EQ(0, provider.enable_level());
+}
+
+TEST(EtwTraceProviderTest, Register) {
+  EtwTraceProvider provider(kTestProvider);
+
+  ASSERT_EQ(ERROR_SUCCESS, provider.Register());
+  EXPECT_NE(NULL, provider.registration_handle());
+  ASSERT_EQ(ERROR_SUCCESS, provider.Unregister());
+  EXPECT_EQ(NULL, provider.registration_handle());
+}
+
+TEST(EtwTraceProviderTest, RegisterWithNoNameFails) {
+  EtwTraceProvider provider;
+
+  EXPECT_NE(ERROR_SUCCESS, provider.Register());
+}
+
+TEST(EtwTraceProviderTest, Enable) {
+  EtwTraceProvider provider(kTestProvider);
+
+  ASSERT_EQ(ERROR_SUCCESS, provider.Register());
+  EXPECT_NE(NULL, provider.registration_handle());
+
+  // No session so far.
+  EXPECT_EQ(NULL, provider.session_handle());
+  EXPECT_EQ(0, provider.enable_flags());
+  EXPECT_EQ(0, provider.enable_level());
+
+  ASSERT_EQ(ERROR_SUCCESS, provider.Unregister());
+  EXPECT_EQ(NULL, provider.registration_handle());
+}