123 lines
4.2 KiB
C++
123 lines
4.2 KiB
C++
// Copyright 2015 The Chromium OS 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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#include <brillo/message_loops/fake_message_loop.h>
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#include <memory>
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#include <vector>
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#include <base/bind.h>
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#include <base/bind_helpers.h>
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#include <base/location.h>
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#include <base/test/simple_test_clock.h>
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#include <gtest/gtest.h>
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#include <brillo/bind_lambda.h>
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#include <brillo/message_loops/message_loop.h>
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using base::Bind;
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using base::Time;
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using base::TimeDelta;
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using std::vector;
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namespace brillo {
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using TaskId = MessageLoop::TaskId;
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class FakeMessageLoopTest : public ::testing::Test {
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protected:
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void SetUp() override {
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loop_.reset(new FakeMessageLoop(nullptr));
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EXPECT_TRUE(loop_.get());
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}
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void TearDown() override {
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EXPECT_FALSE(loop_->PendingTasks());
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}
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base::SimpleTestClock clock_;
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std::unique_ptr<FakeMessageLoop> loop_;
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};
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TEST_F(FakeMessageLoopTest, CancelTaskInvalidValuesTest) {
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EXPECT_FALSE(loop_->CancelTask(MessageLoop::kTaskIdNull));
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EXPECT_FALSE(loop_->CancelTask(1234));
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}
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TEST_F(FakeMessageLoopTest, PostDelayedTaskRunsInOrder) {
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vector<int> order;
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auto callback = [](std::vector<int>* order, int value) {
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order->push_back(value);
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};
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loop_->PostDelayedTask(Bind(callback, base::Unretained(&order), 1),
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TimeDelta::FromSeconds(1));
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loop_->PostDelayedTask(Bind(callback, base::Unretained(&order), 4),
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TimeDelta::FromSeconds(4));
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loop_->PostDelayedTask(Bind(callback, base::Unretained(&order), 3),
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TimeDelta::FromSeconds(3));
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loop_->PostDelayedTask(Bind(callback, base::Unretained(&order), 2),
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TimeDelta::FromSeconds(2));
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// Run until all the tasks are run.
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loop_->Run();
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EXPECT_EQ((vector<int>{1, 2, 3, 4}), order);
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}
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TEST_F(FakeMessageLoopTest, PostDelayedTaskAdvancesTheTime) {
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Time start = Time::FromInternalValue(1000000);
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clock_.SetNow(start);
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loop_.reset(new FakeMessageLoop(&clock_));
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loop_->PostDelayedTask(base::DoNothing(), TimeDelta::FromSeconds(1));
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loop_->PostDelayedTask(base::DoNothing(), TimeDelta::FromSeconds(2));
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EXPECT_FALSE(loop_->RunOnce(false));
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// If the callback didn't run, the time shouldn't change.
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EXPECT_EQ(start, clock_.Now());
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// If we run only one callback, the time should be set to the time that
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// callack ran.
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EXPECT_TRUE(loop_->RunOnce(true));
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EXPECT_EQ(start + TimeDelta::FromSeconds(1), clock_.Now());
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// If the clock is advanced manually, we should be able to run the
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// callback without blocking, since the firing time is in the past.
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clock_.SetNow(start + TimeDelta::FromSeconds(3));
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EXPECT_TRUE(loop_->RunOnce(false));
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// The time should not change even if the callback is due in the past.
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EXPECT_EQ(start + TimeDelta::FromSeconds(3), clock_.Now());
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}
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TEST_F(FakeMessageLoopTest, WatchFileDescriptorWaits) {
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int fd = 1234;
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// We will simulate this situation. At the beginning, we will watch for a
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// file descriptor that won't trigger for 10s. Then we will pretend it is
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// ready after 10s and expect its callback to run just once.
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int called = 0;
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TaskId task_id = loop_->WatchFileDescriptor(
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FROM_HERE, fd, MessageLoop::kWatchRead, false,
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Bind([](int* called) { (*called)++; }, base::Unretained(&called)));
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EXPECT_NE(MessageLoop::kTaskIdNull, task_id);
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EXPECT_NE(MessageLoop::kTaskIdNull,
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loop_->PostDelayedTask(Bind(&FakeMessageLoop::BreakLoop,
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base::Unretained(loop_.get())),
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TimeDelta::FromSeconds(10)));
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EXPECT_NE(MessageLoop::kTaskIdNull,
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loop_->PostDelayedTask(Bind(&FakeMessageLoop::BreakLoop,
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base::Unretained(loop_.get())),
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TimeDelta::FromSeconds(20)));
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loop_->Run();
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EXPECT_EQ(0, called);
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loop_->SetFileDescriptorReadiness(fd, MessageLoop::kWatchRead, true);
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loop_->Run();
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EXPECT_EQ(1, called);
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EXPECT_FALSE(loop_->CancelTask(task_id));
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}
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TEST_F(FakeMessageLoopTest, PendingTasksTest) {
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loop_->PostDelayedTask(base::DoNothing(), TimeDelta::FromSeconds(1));
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EXPECT_TRUE(loop_->PendingTasks());
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loop_->Run();
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}
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} // namespace brillo
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