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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/android/java_handler_thread.h"
#include "base/synchronization/waitable_event.h"
#include "base/task/sequence_manager/sequence_manager_impl.h"
#include "base/task/task_observer.h"
#include "base/test/android/java_handler_thread_helpers.h"
#include "base/test/bind.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace base {
namespace {
class JavaHandlerThreadForTest : public android::JavaHandlerThread {
public:
explicit JavaHandlerThreadForTest(
const char* name,
base::ThreadType thread_type = base::ThreadType::kDefault)
: android::JavaHandlerThread(name, thread_type) {}
using android::JavaHandlerThread::state;
using android::JavaHandlerThread::State;
};
class DummyTaskObserver : public TaskObserver {
public:
explicit DummyTaskObserver(int num_tasks)
: num_tasks_started_(0), num_tasks_processed_(0), num_tasks_(num_tasks) {}
DummyTaskObserver(int num_tasks, int num_tasks_started)
: num_tasks_started_(num_tasks_started),
num_tasks_processed_(0),
num_tasks_(num_tasks) {}
DummyTaskObserver(const DummyTaskObserver&) = delete;
DummyTaskObserver& operator=(const DummyTaskObserver&) = delete;
~DummyTaskObserver() override = default;
void WillProcessTask(const PendingTask& /* pending_task */,
bool /* was_blocked_or_low_priority */) override {
num_tasks_started_++;
EXPECT_LE(num_tasks_started_, num_tasks_);
EXPECT_EQ(num_tasks_started_, num_tasks_processed_ + 1);
}
void DidProcessTask(const PendingTask& pending_task) override {
num_tasks_processed_++;
EXPECT_LE(num_tasks_started_, num_tasks_);
EXPECT_EQ(num_tasks_started_, num_tasks_processed_);
}
int num_tasks_started() const { return num_tasks_started_; }
int num_tasks_processed() const { return num_tasks_processed_; }
private:
int num_tasks_started_;
int num_tasks_processed_;
const int num_tasks_;
};
void PostNTasks(int posts_remaining) {
if (posts_remaining > 1) {
SingleThreadTaskRunner::GetCurrentDefault()->PostTask(
FROM_HERE, BindOnce(&PostNTasks, posts_remaining - 1));
}
}
} // namespace
class JavaHandlerThreadTest : public ::testing::Test {};
void RunTest_AbortDontRunMoreTasks(bool delayed, bool init_java_first) {
WaitableEvent test_done_event;
std::unique_ptr<android::JavaHandlerThread> java_thread;
if (init_java_first) {
java_thread = android::JavaHandlerThreadHelpers::CreateJavaFirst();
} else {
java_thread = std::make_unique<android::JavaHandlerThread>(
"JavaHandlerThreadForTesting from AbortDontRunMoreTasks");
}
java_thread->Start();
java_thread->ListenForUncaughtExceptionsForTesting();
auto target =
BindOnce(&android::JavaHandlerThreadHelpers::ThrowExceptionAndAbort,
&test_done_event);
if (delayed) {
java_thread->task_runner()->PostDelayedTask(FROM_HERE, std::move(target),
Milliseconds(10));
} else {
java_thread->task_runner()->PostTask(FROM_HERE, std::move(target));
java_thread->task_runner()->PostTask(FROM_HERE,
MakeExpectedNotRunClosure(FROM_HERE));
}
test_done_event.Wait();
java_thread->Stop();
android::ScopedJavaLocalRef<jthrowable> exception =
java_thread->GetUncaughtExceptionIfAny();
ASSERT_TRUE(
android::JavaHandlerThreadHelpers::IsExceptionTestException(exception));
}
TEST_F(JavaHandlerThreadTest, JavaExceptionAbort) {
constexpr bool delayed = false;
constexpr bool init_java_first = false;
RunTest_AbortDontRunMoreTasks(delayed, init_java_first);
}
TEST_F(JavaHandlerThreadTest, DelayedJavaExceptionAbort) {
constexpr bool delayed = true;
constexpr bool init_java_first = false;
RunTest_AbortDontRunMoreTasks(delayed, init_java_first);
}
TEST_F(JavaHandlerThreadTest, JavaExceptionAbortInitJavaFirst) {
constexpr bool delayed = false;
constexpr bool init_java_first = true;
RunTest_AbortDontRunMoreTasks(delayed, init_java_first);
}
TEST_F(JavaHandlerThreadTest, RunTasksWhileShuttingDownJavaThread) {
const int kNumPosts = 6;
DummyTaskObserver observer(kNumPosts, 1);
auto java_thread = std::make_unique<JavaHandlerThreadForTest>("test");
java_thread->Start();
sequence_manager::internal::SequenceManagerImpl* sequence_manager =
static_cast<sequence_manager::internal::SequenceManagerImpl*>(
java_thread->state()->sequence_manager.get());
java_thread->task_runner()->PostTask(
FROM_HERE, BindLambdaForTesting([&]() {
sequence_manager->AddTaskObserver(&observer);
SingleThreadTaskRunner::GetCurrentDefault()->PostDelayedTask(
FROM_HERE, MakeExpectedNotRunClosure(FROM_HERE), Days(1));
java_thread->StopSequenceManagerForTesting();
PostNTasks(kNumPosts);
}));
java_thread->JoinForTesting();
java_thread.reset();
EXPECT_EQ(kNumPosts, observer.num_tasks_started());
EXPECT_EQ(kNumPosts, observer.num_tasks_processed());
}
} // namespace base
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