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// 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 controller.
#include "base/event_trace_controller_win.h"
#include "base/event_trace_provider_win.h"
#include "base/file_path.h"
#include "base/file_util.h"
#include "base/logging.h"
#include "base/scoped_handle.h"
#include "base/sys_info.h"
#include "testing/gtest/include/gtest/gtest.h"
#include <initguid.h> // NOLINT - must be last.
namespace {
const wchar_t kTestSessionName[] = L"TestLogSession";
// {0D236A42-CD18-4e3d-9975-DCEEA2106E05}
DEFINE_GUID(kTestProvider,
0xd236a42, 0xcd18, 0x4e3d, 0x99, 0x75, 0xdc, 0xee, 0xa2, 0x10, 0x6e, 0x5);
DEFINE_GUID(kGuidNull,
0x0000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0);
const ULONG kTestProviderFlags = 0xCAFEBABE;
class TestingProvider: public EtwTraceProvider {
public:
explicit TestingProvider(const GUID& provider_name)
: EtwTraceProvider(provider_name) {
callback_event_.Set(::CreateEvent(NULL, TRUE, FALSE, NULL));
}
void WaitForCallback() {
::WaitForSingleObject(callback_event_.Get(), INFINITE);
::ResetEvent(callback_event_.Get());
}
private:
virtual void OnEventsEnabled() {
::SetEvent(callback_event_.Get());
}
virtual void OnEventsDisabled() {
::SetEvent(callback_event_.Get());
}
ScopedHandle callback_event_;
DISALLOW_COPY_AND_ASSIGN(TestingProvider);
};
} // namespace
TEST(EtwTraceTest, Cleanup) {
// Clean up potential leftover sessions from previous unsuccessful runs.
EtwTraceController::Stop(kTestSessionName, NULL);
}
TEST(EtwTracePropertiesTest, Initialization) {
EtwTraceProperties prop;
EVENT_TRACE_PROPERTIES* p = prop.get();
EXPECT_NE(0, p->Wnode.BufferSize);
EXPECT_EQ(0, p->Wnode.ProviderId);
EXPECT_EQ(0, p->Wnode.HistoricalContext);
EXPECT_TRUE(kGuidNull == p->Wnode.Guid);
EXPECT_EQ(0, p->Wnode.ClientContext);
EXPECT_EQ(WNODE_FLAG_TRACED_GUID, p->Wnode.Flags);
EXPECT_EQ(0, p->BufferSize);
EXPECT_EQ(0, p->MinimumBuffers);
EXPECT_EQ(0, p->MaximumBuffers);
EXPECT_EQ(0, p->MaximumFileSize);
EXPECT_EQ(0, p->LogFileMode);
EXPECT_EQ(0, p->FlushTimer);
EXPECT_EQ(0, p->EnableFlags);
EXPECT_EQ(0, p->AgeLimit);
EXPECT_EQ(0, p->NumberOfBuffers);
EXPECT_EQ(0, p->FreeBuffers);
EXPECT_EQ(0, p->EventsLost);
EXPECT_EQ(0, p->BuffersWritten);
EXPECT_EQ(0, p->LogBuffersLost);
EXPECT_EQ(0, p->RealTimeBuffersLost);
EXPECT_EQ(0, p->LoggerThreadId);
EXPECT_NE(0, p->LogFileNameOffset);
EXPECT_NE(0, p->LoggerNameOffset);
}
TEST(EtwTracePropertiesTest, Strings) {
EtwTraceProperties prop;
ASSERT_STREQ(L"", prop.GetLoggerFileName());
ASSERT_STREQ(L"", prop.GetLoggerName());
std::wstring name(1023, L'A');
ASSERT_HRESULT_SUCCEEDED(prop.SetLoggerFileName(name.c_str()));
ASSERT_HRESULT_SUCCEEDED(prop.SetLoggerName(name.c_str()));
ASSERT_STREQ(name.c_str(), prop.GetLoggerFileName());
ASSERT_STREQ(name.c_str(), prop.GetLoggerName());
std::wstring name2(1024, L'A');
ASSERT_HRESULT_FAILED(prop.SetLoggerFileName(name2.c_str()));
ASSERT_HRESULT_FAILED(prop.SetLoggerName(name2.c_str()));
}
TEST(EtwTraceControllerTest, Initialize) {
EtwTraceController controller;
EXPECT_EQ(NULL, controller.session());
EXPECT_STREQ(L"", controller.session_name());
}
TEST(EtwTraceControllerTest, StartRealTimeSession) {
EtwTraceController controller;
HRESULT hr = controller.StartRealtimeSession(kTestSessionName, 100 * 1024);
if (hr == E_ACCESSDENIED) {
LOG(INFO) << "You must be an administrator to run this test on Vista";
return;
}
EXPECT_TRUE(NULL != controller.session());
EXPECT_STREQ(kTestSessionName, controller.session_name());
EXPECT_HRESULT_SUCCEEDED(controller.Stop(NULL));
EXPECT_EQ(NULL, controller.session());
EXPECT_STREQ(L"", controller.session_name());
}
TEST(EtwTraceControllerTest, StartFileSession) {
FilePath temp;
ASSERT_HRESULT_SUCCEEDED(file_util::CreateTemporaryFile(&temp));
EtwTraceController controller;
HRESULT hr = controller.StartFileSession(kTestSessionName,
temp.value().c_str());
if (hr == E_ACCESSDENIED) {
LOG(INFO) << "You must be an administrator to run this test on Vista";
return;
}
EXPECT_TRUE(NULL != controller.session());
EXPECT_STREQ(kTestSessionName, controller.session_name());
EXPECT_HRESULT_SUCCEEDED(controller.Stop(NULL));
EXPECT_EQ(NULL, controller.session());
EXPECT_STREQ(L"", controller.session_name());
}
TEST(EtwTraceControllerTest, EnableDisable) {
TestingProvider provider(kTestProvider);
EXPECT_EQ(ERROR_SUCCESS, provider.Register());
EXPECT_EQ(NULL, provider.session_handle());
EtwTraceController controller;
HRESULT hr = controller.StartRealtimeSession(kTestSessionName, 100 * 1024);
if (hr == E_ACCESSDENIED) {
LOG(INFO) << "You must be an administrator to run this test on Vista";
return;
}
EXPECT_HRESULT_SUCCEEDED(controller.EnableProvider(kTestProvider,
TRACE_LEVEL_VERBOSE, kTestProviderFlags));
provider.WaitForCallback();
EXPECT_EQ(TRACE_LEVEL_VERBOSE, provider.enable_level());
EXPECT_EQ(kTestProviderFlags, provider.enable_flags());
EXPECT_HRESULT_SUCCEEDED(controller.DisableProvider(kTestProvider));
provider.WaitForCallback();
EXPECT_EQ(0, provider.enable_level());
EXPECT_EQ(0, provider.enable_flags());
EXPECT_EQ(ERROR_SUCCESS, provider.Unregister());
// Enable the provider again, before registering.
EXPECT_HRESULT_SUCCEEDED(controller.EnableProvider(kTestProvider,
TRACE_LEVEL_VERBOSE, kTestProviderFlags));
// Register the provider again, the settings above
// should take immediate effect.
EXPECT_EQ(ERROR_SUCCESS, provider.Register());
EXPECT_EQ(TRACE_LEVEL_VERBOSE, provider.enable_level());
EXPECT_EQ(kTestProviderFlags, provider.enable_flags());
EXPECT_HRESULT_SUCCEEDED(controller.Stop(NULL));
provider.WaitForCallback();
// Session should have wound down.
EXPECT_EQ(0, provider.enable_level());
EXPECT_EQ(0, provider.enable_flags());
}
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