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// Copyright 2015 The Chromium OS Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <brillo/message_loops/message_loop.h>
// These are the common tests for all the brillo::MessageLoop implementations
// that should conform to this interface's contracts. For extra
// implementation-specific tests see the particular implementation unittests in
// the *_test.cc files.
#include <memory>
#include <vector>
#include <base/bind.h>
#include <base/bind_helpers.h>
#include <base/location.h>
#include <base/posix/eintr_wrapper.h>
#include <gtest/gtest.h>
#include <brillo/message_loops/base_message_loop.h>
#include <brillo/message_loops/message_loop_utils.h>
#include <brillo/unittest_utils.h>
using base::BindOnce;
using base::BindRepeating;
using base::TimeDelta;
namespace {
// Convenience functions for passing to base::Bind{Once,Repeating}.
void SetToTrue(bool* b) {
*b = true;
}
bool ReturnBool(bool *b) {
return *b;
}
} // namespace
namespace brillo {
using TaskId = MessageLoop::TaskId;
template <typename T>
class MessageLoopTest : public ::testing::Test {
protected:
void SetUp() override {
MessageLoopSetUp();
EXPECT_TRUE(this->loop_.get());
}
std::unique_ptr<base::MessageLoopForIO> base_loop_;
std::unique_ptr<MessageLoop> loop_;
private:
// These MessageLoopSetUp() methods are used to setup each MessageLoop
// according to its constructor requirements.
void MessageLoopSetUp();
};
template <>
void MessageLoopTest<BaseMessageLoop>::MessageLoopSetUp() {
base_loop_.reset(new base::MessageLoopForIO());
loop_.reset(new BaseMessageLoop(base_loop_.get()));
loop_->SetAsCurrent();
}
// This setups gtest to run each one of the following TYPED_TEST test cases on
// on each implementation.
typedef ::testing::Types<BaseMessageLoop> MessageLoopTypes;
TYPED_TEST_CASE(MessageLoopTest, MessageLoopTypes);
TYPED_TEST(MessageLoopTest, CancelTaskInvalidValuesTest) {
EXPECT_FALSE(this->loop_->CancelTask(MessageLoop::kTaskIdNull));
EXPECT_FALSE(this->loop_->CancelTask(1234));
}
TYPED_TEST(MessageLoopTest, PostTaskTest) {
bool called = false;
TaskId task_id =
this->loop_->PostTask(FROM_HERE, BindOnce(&SetToTrue, &called));
EXPECT_NE(MessageLoop::kTaskIdNull, task_id);
MessageLoopRunMaxIterations(this->loop_.get(), 100);
EXPECT_TRUE(called);
}
// Tests that we can cancel tasks right after we schedule them.
TYPED_TEST(MessageLoopTest, PostTaskCancelledTest) {
bool called = false;
TaskId task_id =
this->loop_->PostTask(FROM_HERE, BindOnce(&SetToTrue, &called));
EXPECT_TRUE(this->loop_->CancelTask(task_id));
MessageLoopRunMaxIterations(this->loop_.get(), 100);
EXPECT_FALSE(called);
// Can't remove a task you already removed.
EXPECT_FALSE(this->loop_->CancelTask(task_id));
}
TYPED_TEST(MessageLoopTest, PostDelayedTaskRunsEventuallyTest) {
bool called = false;
TaskId task_id =
this->loop_->PostDelayedTask(FROM_HERE, BindOnce(&SetToTrue, &called),
TimeDelta::FromMilliseconds(50));
EXPECT_NE(MessageLoop::kTaskIdNull, task_id);
MessageLoopRunUntil(this->loop_.get(), TimeDelta::FromSeconds(10),
BindRepeating(&ReturnBool, &called));
// Check that the main loop finished before the 10 seconds timeout, so it
// finished due to the callback being called and not due to the timeout.
EXPECT_TRUE(called);
}
// Test that you can call the overloaded version of PostDelayedTask from
// MessageLoop. This is important because only one of the two methods is
// virtual, so you need to unhide the other when overriding the virtual one.
TYPED_TEST(MessageLoopTest, PostDelayedTaskWithoutLocation) {
this->loop_->PostDelayedTask(base::DoNothing(), TimeDelta());
EXPECT_EQ(1, MessageLoopRunMaxIterations(this->loop_.get(), 100));
}
// Test that we can cancel the task we are running, and should just fail.
TYPED_TEST(MessageLoopTest, DeleteTaskFromSelf) {
bool cancel_result = true; // We would expect this to be false.
TaskId task_id;
task_id = this->loop_->PostTask(
FROM_HERE,
BindOnce(
[](bool* cancel_result, MessageLoop* loop, TaskId* task_id) {
*cancel_result = loop->CancelTask(*task_id);
},
&cancel_result, this->loop_.get(), &task_id));
EXPECT_EQ(1, MessageLoopRunMaxIterations(this->loop_.get(), 100));
EXPECT_FALSE(cancel_result);
}
} // namespace brillo
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