111 lines
3.6 KiB
C++
111 lines
3.6 KiB
C++
// Copyright (c) 2010 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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//
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// Unit tests for event trace provider.
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#include "base/win/event_trace_provider.h"
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#include <new>
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#include "testing/gtest/include/gtest/gtest.h"
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#include <initguid.h> // NOLINT - has to be last
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namespace {
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using base::win::EtwTraceProvider;
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using base::win::EtwMofEvent;
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// {7F0FD37F-FA3C-4cd6-9242-DF60967A2CB2}
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DEFINE_GUID(kTestProvider,
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0x7f0fd37f, 0xfa3c, 0x4cd6, 0x92, 0x42, 0xdf, 0x60, 0x96, 0x7a, 0x2c, 0xb2);
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// {7F0FD37F-FA3C-4cd6-9242-DF60967A2CB2}
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DEFINE_GUID(kTestEventClass,
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0x7f0fd37f, 0xfa3c, 0x4cd6, 0x92, 0x42, 0xdf, 0x60, 0x96, 0x7a, 0x2c, 0xb2);
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} // namespace
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TEST(EtwTraceProviderTest, ToleratesPreCreateInvocations) {
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// Because the trace provider is used in logging, it's important that
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// it be possible to use static provider instances without regard to
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// whether they've been constructed or destructed.
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// The interface of the class is designed to tolerate this usage.
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char buf[sizeof(EtwTraceProvider)] = {0};
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EtwTraceProvider& provider = reinterpret_cast<EtwTraceProvider&>(buf);
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EXPECT_EQ(NULL, provider.registration_handle());
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EXPECT_EQ(NULL, provider.session_handle());
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EXPECT_EQ(0, provider.enable_flags());
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EXPECT_EQ(0, provider.enable_level());
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EXPECT_FALSE(provider.ShouldLog(TRACE_LEVEL_FATAL, 0xfffffff));
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// We expect these not to crash.
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provider.Log(kTestEventClass, 0, TRACE_LEVEL_FATAL, "foo");
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provider.Log(kTestEventClass, 0, TRACE_LEVEL_FATAL, L"foo");
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EtwMofEvent<1> dummy(kTestEventClass, 0, TRACE_LEVEL_FATAL);
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DWORD data = 0;
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dummy.SetField(0, sizeof(data), &data);
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provider.Log(dummy.get());
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// Placement-new the provider into our buffer.
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new (buf) EtwTraceProvider(kTestProvider);
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// Registration is now safe.
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EXPECT_EQ(ERROR_SUCCESS, provider.Register());
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// Destruct the instance, this should unregister it.
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provider.EtwTraceProvider::~EtwTraceProvider();
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// And post-destruction, all of the above should still be safe.
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EXPECT_EQ(NULL, provider.registration_handle());
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EXPECT_EQ(NULL, provider.session_handle());
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EXPECT_EQ(0, provider.enable_flags());
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EXPECT_EQ(0, provider.enable_level());
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EXPECT_FALSE(provider.ShouldLog(TRACE_LEVEL_FATAL, 0xfffffff));
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// We expect these not to crash.
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provider.Log(kTestEventClass, 0, TRACE_LEVEL_FATAL, "foo");
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provider.Log(kTestEventClass, 0, TRACE_LEVEL_FATAL, L"foo");
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provider.Log(dummy.get());
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}
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TEST(EtwTraceProviderTest, Initialize) {
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EtwTraceProvider provider(kTestProvider);
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EXPECT_EQ(NULL, provider.registration_handle());
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EXPECT_EQ(NULL, provider.session_handle());
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EXPECT_EQ(0, provider.enable_flags());
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EXPECT_EQ(0, provider.enable_level());
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}
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TEST(EtwTraceProviderTest, Register) {
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EtwTraceProvider provider(kTestProvider);
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ASSERT_EQ(ERROR_SUCCESS, provider.Register());
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EXPECT_NE(NULL, provider.registration_handle());
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ASSERT_EQ(ERROR_SUCCESS, provider.Unregister());
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EXPECT_EQ(NULL, provider.registration_handle());
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}
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TEST(EtwTraceProviderTest, RegisterWithNoNameFails) {
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EtwTraceProvider provider;
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EXPECT_TRUE(provider.Register() != ERROR_SUCCESS);
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}
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TEST(EtwTraceProviderTest, Enable) {
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EtwTraceProvider provider(kTestProvider);
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ASSERT_EQ(ERROR_SUCCESS, provider.Register());
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EXPECT_NE(NULL, provider.registration_handle());
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// No session so far.
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EXPECT_EQ(NULL, provider.session_handle());
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EXPECT_EQ(0, provider.enable_flags());
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EXPECT_EQ(0, provider.enable_level());
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ASSERT_EQ(ERROR_SUCCESS, provider.Unregister());
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EXPECT_EQ(NULL, provider.registration_handle());
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}
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