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// Copyright 2013 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.
#include <stddef.h>
#include <memory>
#include <string>
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/callback_forward.h"
#include "base/macros.h"
#include "base/message_loop/message_loop.h"
#include "base/sequence_checker_impl.h"
#include "base/sequence_token.h"
#include "base/single_thread_task_runner.h"
#include "base/test/sequenced_worker_pool_owner.h"
#include "base/threading/simple_thread.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace base {
namespace {
constexpr size_t kNumWorkerThreads = 3;
// Runs a callback on another thread.
class RunCallbackThread : public SimpleThread {
public:
explicit RunCallbackThread(const Closure& callback)
: SimpleThread("RunCallbackThread"), callback_(callback) {
Start();
Join();
}
private:
// SimpleThread:
void Run() override { callback_.Run(); }
const Closure callback_;
DISALLOW_COPY_AND_ASSIGN(RunCallbackThread);
};
class SequenceCheckerTest : public testing::Test {
protected:
SequenceCheckerTest() : pool_owner_(kNumWorkerThreads, "test") {}
void PostToSequencedWorkerPool(const Closure& callback,
const std::string& token_name) {
pool_owner_.pool()->PostNamedSequencedWorkerTask(token_name, FROM_HERE,
callback);
}
void FlushSequencedWorkerPoolForTesting() {
pool_owner_.pool()->FlushForTesting();
}
private:
MessageLoop message_loop_; // Needed by SequencedWorkerPool to function.
SequencedWorkerPoolOwner pool_owner_;
DISALLOW_COPY_AND_ASSIGN(SequenceCheckerTest);
};
void ExpectCalledOnValidSequence(SequenceCheckerImpl* sequence_checker) {
ASSERT_TRUE(sequence_checker);
// This should bind |sequence_checker| to the current sequence if it wasn't
// already bound to a sequence.
EXPECT_TRUE(sequence_checker->CalledOnValidSequence());
// Since |sequence_checker| is now bound to the current sequence, another call
// to CalledOnValidSequence() should return true.
EXPECT_TRUE(sequence_checker->CalledOnValidSequence());
}
void ExpectCalledOnValidSequenceWithSequenceToken(
SequenceCheckerImpl* sequence_checker,
SequenceToken sequence_token) {
ScopedSetSequenceTokenForCurrentThread
scoped_set_sequence_token_for_current_thread(sequence_token);
ExpectCalledOnValidSequence(sequence_checker);
}
void ExpectNotCalledOnValidSequence(SequenceCheckerImpl* sequence_checker) {
ASSERT_TRUE(sequence_checker);
EXPECT_FALSE(sequence_checker->CalledOnValidSequence());
}
} // namespace
TEST_F(SequenceCheckerTest, CallsAllowedOnSameThreadNoSequenceToken) {
SequenceCheckerImpl sequence_checker;
EXPECT_TRUE(sequence_checker.CalledOnValidSequence());
}
TEST_F(SequenceCheckerTest, CallsAllowedOnSameThreadSameSequenceToken) {
ScopedSetSequenceTokenForCurrentThread
scoped_set_sequence_token_for_current_thread(SequenceToken::Create());
SequenceCheckerImpl sequence_checker;
EXPECT_TRUE(sequence_checker.CalledOnValidSequence());
}
TEST_F(SequenceCheckerTest, CallsDisallowedOnDifferentThreadsNoSequenceToken) {
SequenceCheckerImpl sequence_checker;
RunCallbackThread thread(
Bind(&ExpectNotCalledOnValidSequence, Unretained(&sequence_checker)));
}
TEST_F(SequenceCheckerTest, CallsAllowedOnDifferentThreadsSameSequenceToken) {
const SequenceToken sequence_token(SequenceToken::Create());
ScopedSetSequenceTokenForCurrentThread
scoped_set_sequence_token_for_current_thread(sequence_token);
SequenceCheckerImpl sequence_checker;
EXPECT_TRUE(sequence_checker.CalledOnValidSequence());
RunCallbackThread thread(Bind(&ExpectCalledOnValidSequenceWithSequenceToken,
Unretained(&sequence_checker), sequence_token));
}
TEST_F(SequenceCheckerTest, CallsDisallowedOnSameThreadDifferentSequenceToken) {
std::unique_ptr<SequenceCheckerImpl> sequence_checker;
{
ScopedSetSequenceTokenForCurrentThread
scoped_set_sequence_token_for_current_thread(SequenceToken::Create());
sequence_checker.reset(new SequenceCheckerImpl);
}
{
// Different SequenceToken.
ScopedSetSequenceTokenForCurrentThread
scoped_set_sequence_token_for_current_thread(SequenceToken::Create());
EXPECT_FALSE(sequence_checker->CalledOnValidSequence());
}
// No SequenceToken.
EXPECT_FALSE(sequence_checker->CalledOnValidSequence());
}
TEST_F(SequenceCheckerTest, DetachFromSequence) {
std::unique_ptr<SequenceCheckerImpl> sequence_checker;
{
ScopedSetSequenceTokenForCurrentThread
scoped_set_sequence_token_for_current_thread(SequenceToken::Create());
sequence_checker.reset(new SequenceCheckerImpl);
}
sequence_checker->DetachFromSequence();
{
// Verify that CalledOnValidSequence() returns true when called with
// a different sequence token after a call to DetachFromSequence().
ScopedSetSequenceTokenForCurrentThread
scoped_set_sequence_token_for_current_thread(SequenceToken::Create());
EXPECT_TRUE(sequence_checker->CalledOnValidSequence());
}
}
TEST_F(SequenceCheckerTest, DetachFromSequenceNoSequenceToken) {
SequenceCheckerImpl sequence_checker;
sequence_checker.DetachFromSequence();
// Verify that CalledOnValidSequence() returns true when called on a
// different thread after a call to DetachFromSequence().
RunCallbackThread thread(
Bind(&ExpectCalledOnValidSequence, Unretained(&sequence_checker)));
EXPECT_FALSE(sequence_checker.CalledOnValidSequence());
}
TEST_F(SequenceCheckerTest, SequencedWorkerPool_SameSequenceTokenValid) {
SequenceCheckerImpl sequence_checker;
sequence_checker.DetachFromSequence();
PostToSequencedWorkerPool(
Bind(&ExpectCalledOnValidSequence, Unretained(&sequence_checker)), "A");
PostToSequencedWorkerPool(
Bind(&ExpectCalledOnValidSequence, Unretained(&sequence_checker)), "A");
FlushSequencedWorkerPoolForTesting();
}
TEST_F(SequenceCheckerTest, SequencedWorkerPool_DetachSequenceTokenValid) {
SequenceCheckerImpl sequence_checker;
sequence_checker.DetachFromSequence();
PostToSequencedWorkerPool(
Bind(&ExpectCalledOnValidSequence, Unretained(&sequence_checker)), "A");
PostToSequencedWorkerPool(
Bind(&ExpectCalledOnValidSequence, Unretained(&sequence_checker)), "A");
FlushSequencedWorkerPoolForTesting();
sequence_checker.DetachFromSequence();
PostToSequencedWorkerPool(
Bind(&ExpectCalledOnValidSequence, Unretained(&sequence_checker)), "B");
PostToSequencedWorkerPool(
Bind(&ExpectCalledOnValidSequence, Unretained(&sequence_checker)), "B");
FlushSequencedWorkerPoolForTesting();
}
TEST_F(SequenceCheckerTest,
SequencedWorkerPool_DifferentSequenceTokensInvalid) {
SequenceCheckerImpl sequence_checker;
sequence_checker.DetachFromSequence();
PostToSequencedWorkerPool(
Bind(&ExpectCalledOnValidSequence, Unretained(&sequence_checker)), "A");
PostToSequencedWorkerPool(
Bind(&ExpectCalledOnValidSequence, Unretained(&sequence_checker)), "A");
FlushSequencedWorkerPoolForTesting();
PostToSequencedWorkerPool(
Bind(&ExpectNotCalledOnValidSequence, Unretained(&sequence_checker)),
"B");
PostToSequencedWorkerPool(
Bind(&ExpectNotCalledOnValidSequence, Unretained(&sequence_checker)),
"B");
FlushSequencedWorkerPoolForTesting();
}
TEST_F(SequenceCheckerTest,
SequencedWorkerPool_WorkerPoolAndSimpleThreadInvalid) {
SequenceCheckerImpl sequence_checker;
sequence_checker.DetachFromSequence();
PostToSequencedWorkerPool(
Bind(&ExpectCalledOnValidSequence, Unretained(&sequence_checker)), "A");
PostToSequencedWorkerPool(
Bind(&ExpectCalledOnValidSequence, Unretained(&sequence_checker)), "A");
FlushSequencedWorkerPoolForTesting();
EXPECT_FALSE(sequence_checker.CalledOnValidSequence());
}
TEST_F(SequenceCheckerTest,
SequencedWorkerPool_TwoDifferentWorkerPoolsInvalid) {
SequenceCheckerImpl sequence_checker;
sequence_checker.DetachFromSequence();
PostToSequencedWorkerPool(
Bind(&ExpectCalledOnValidSequence, Unretained(&sequence_checker)), "A");
PostToSequencedWorkerPool(
Bind(&ExpectCalledOnValidSequence, Unretained(&sequence_checker)), "A");
FlushSequencedWorkerPoolForTesting();
SequencedWorkerPoolOwner second_pool_owner(kNumWorkerThreads, "test2");
second_pool_owner.pool()->PostNamedSequencedWorkerTask(
"A", FROM_HERE, base::Bind(&ExpectNotCalledOnValidSequence,
base::Unretained(&sequence_checker)));
second_pool_owner.pool()->FlushForTesting();
}
} // namespace base
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