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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/barrier_closure.h"
#include "base/run_loop.h"
#include "base/task/thread_pool.h"
#include "base/test/bind.h"
#include "chrome/browser/after_startup_task_utils.h"
#include "chrome/test/base/in_process_browser_test.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/test/browser_test.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace {
class NoBestEffortTasksDuringStartupTest : public InProcessBrowserTest {
public:
// InProcessBrowserTest:
void PreRunTestOnMainThread() override {
// This test must run before PreRunTestOnMainThread() sets startup as
// complete.
TestNoBestEffortTasksDuringStartup();
InProcessBrowserTest::PreRunTestOnMainThread();
}
void TestNoBestEffortTasksDuringStartup() {
EXPECT_FALSE(AfterStartupTaskUtils::IsBrowserStartupComplete());
base::RunLoop run_loop;
auto barrier = base::BarrierClosure(2, run_loop.QuitClosure());
// Thread pool task.
base::ThreadPool::PostTask(
FROM_HERE, {base::TaskPriority::BEST_EFFORT},
base::BindLambdaForTesting([&]() {
EXPECT_TRUE(AfterStartupTaskUtils::IsBrowserStartupComplete());
barrier.Run();
}));
// UI thread task.
content::GetUIThreadTaskRunner({base::TaskPriority::BEST_EFFORT})
->PostTask(
FROM_HERE, base::BindLambdaForTesting([&]() {
EXPECT_TRUE(AfterStartupTaskUtils::IsBrowserStartupComplete());
barrier.Run();
}));
run_loop.Run();
}
};
} // namespace
// Verify that BEST_EFFORT tasks don't run until startup is complete.
IN_PROC_BROWSER_TEST_F(NoBestEffortTasksDuringStartupTest,
NoBestEffortTasksDuringStartup) {
// The body of the test is in the TestNoBestEffortTasksDuringStartup() method
// called from PreRunTestOnMainThread().
}
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