1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "content/browser/tracing/trace_subscriber_stdio.h" 6 7 #include "base/file_util.h" 8 #include "base/files/scoped_temp_dir.h" 9 #include "base/threading/sequenced_worker_pool.h" 10 #include "content/public/browser/browser_thread.h" 11 #include "testing/gtest/include/gtest/gtest.h" 12 13 namespace content { 14 15 class TraceSubscriberStdioTest : public ::testing::Test {}; 16 17 TEST_F(TraceSubscriberStdioTest, CanWriteDataToFile) { 18 base::ScopedTempDir trace_dir; 19 ASSERT_TRUE(trace_dir.CreateUniqueTempDir()); 20 base::FilePath trace_file(trace_dir.path().AppendASCII("trace.txt")); 21 { 22 TraceSubscriberStdio subscriber(trace_file); 23 24 std::string foo("foo"); 25 subscriber.OnTraceDataCollected( 26 make_scoped_refptr(base::RefCountedString::TakeString(&foo))); 27 28 std::string bar("bar"); 29 subscriber.OnTraceDataCollected( 30 make_scoped_refptr(base::RefCountedString::TakeString(&bar))); 31 32 subscriber.OnEndTracingComplete(); 33 } 34 BrowserThread::GetBlockingPool()->FlushForTesting(); 35 std::string result; 36 EXPECT_TRUE(file_util::ReadFileToString(trace_file, &result)); 37 EXPECT_EQ("[foo,bar]", result); 38 } 39 40 } // namespace content 41
