1
    2
    3
    4
    5
    6
    7
    8
    9
   10
   11
   12
   13
   14
   15
   16
   17
   18
   19
   20
   21
   22
   23
   24
   25
   26
   27
   28
   29
   30
   31
   32
   33
   34
   35
   36
   37
   38
   39
   40
   41
   42
   43
   44
   45
   46
   47
   48
   49
   50
   51
   52
   53
   54
   55
   56
   57
   58
   59
   60
   61
   62
   63
   64
   65
   66
   67
   68
   69
   70
   71
   72
   73
   74
   75
   76
   77
   78
   79
   80
   81
   82
   83
   84
   85
   86
   87
   88
   89
   90
   91
   92
   93
   94
   95
   96
   97
   98
   99
  100
  101
  102
  103
  104
  105
  106
  107
  108
  109
  110
  111
  112
  113
  114
  115
  116
  117
  118
  119
  120
  121
  122
  123
  124
  125
  126
  127
  128
  129
  130
  131
  132
  133
  134
  135
  136
  137
  138
  139
  140
  141
  142
  143
  144
  145
  146
  147
  148
  149
  150
  151
  152


base / android / java_handler_thread_unittest.cc [blame]

// 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