mojo/public/cpp/environment/tests/async_waiter_unittest.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include <string>
   6
   7 #include "mojo/public/cpp/environment/default_async_waiter.h"
   8 #include "mojo/public/cpp/environment/environment.h"
   9 #include "mojo/public/cpp/system/core.h"
  10 #include "mojo/public/cpp/system/macros.h"
  11 #include "mojo/public/cpp/test_support/test_utils.h"
  12 #include "mojo/public/cpp/utility/run_loop.h"
  13 #include "testing/gtest/include/gtest/gtest.h"
  14
  15 namespace mojo {
  16 namespace {
  17
  18 class TestAsyncWaitCallback {
  19  public:
  20   TestAsyncWaitCallback() : result_count_(0), last_result_(MOJO_RESULT_OK) {
  21   }
  22   virtual ~TestAsyncWaitCallback() {}
  23
  24   int result_count() const { return result_count_; }
  25
  26   MojoResult last_result() const { return last_result_; }
  27
  28   // MojoAsyncWaitCallback:
  29   static void OnHandleReady(void* closure, MojoResult result) {
  30     TestAsyncWaitCallback* self = static_cast<TestAsyncWaitCallback*>(closure);
  31     self->result_count_++;
  32     self->last_result_ = result;
  33   }
  34
  35  private:
  36   int result_count_;
  37   MojoResult last_result_;
  38
  39   MOJO_DISALLOW_COPY_AND_ASSIGN(TestAsyncWaitCallback);
  40 };
  41
  42 MojoAsyncWaitID CallAsyncWait(const Handle& handle,
  43                               MojoWaitFlags flags,
  44                               TestAsyncWaitCallback* callback) {
  45   MojoAsyncWaiter* waiter = GetDefaultAsyncWaiter();
  46   return waiter->AsyncWait(waiter,
  47                            handle.value(),
  48                            flags,
  49                            MOJO_DEADLINE_INDEFINITE,
  50                            &TestAsyncWaitCallback::OnHandleReady,
  51                            callback);
  52 }
  53
  54 void CallCancelWait(MojoAsyncWaitID wait_id) {
  55   MojoAsyncWaiter* waiter = GetDefaultAsyncWaiter();
  56   waiter->CancelWait(waiter, wait_id);
  57 }
  58
  59 class AsyncWaiterTest : public testing::Test {
  60  public:
  61   AsyncWaiterTest() {}
  62
  63  private:
  64   Environment environment_;
  65   RunLoop run_loop_;
  66
  67   MOJO_DISALLOW_COPY_AND_ASSIGN(AsyncWaiterTest);
  68 };
  69
  70 // Verifies AsyncWaitCallback is notified when pipe is ready.
  71 TEST_F(AsyncWaiterTest, CallbackNotified) {
  72   TestAsyncWaitCallback callback;
  73   MessagePipe test_pipe;
  74   EXPECT_TRUE(test::WriteTextMessage(test_pipe.handle1.get(), std::string()));
  75
  76   CallAsyncWait(test_pipe.handle0.get(),
  77                 MOJO_WAIT_FLAG_READABLE,
  78                 &callback);
  79   RunLoop::current()->Run();
  80   EXPECT_EQ(1, callback.result_count());
  81   EXPECT_EQ(MOJO_RESULT_OK, callback.last_result());
  82 }
  83
  84 // Verifies 2 AsyncWaitCallbacks are notified when there pipes are ready.
  85 TEST_F(AsyncWaiterTest, TwoCallbacksNotified) {
  86   TestAsyncWaitCallback callback1;
  87   TestAsyncWaitCallback callback2;
  88   MessagePipe test_pipe1;
  89   MessagePipe test_pipe2;
  90   EXPECT_TRUE(test::WriteTextMessage(test_pipe1.handle1.get(), std::string()));
  91   EXPECT_TRUE(test::WriteTextMessage(test_pipe2.handle1.get(), std::string()));
  92
  93   CallAsyncWait(test_pipe1.handle0.get(), MOJO_WAIT_FLAG_READABLE, &callback1);
  94   CallAsyncWait(test_pipe2.handle0.get(), MOJO_WAIT_FLAG_READABLE, &callback2);
  95
  96   RunLoop::current()->Run();
  97   EXPECT_EQ(1, callback1.result_count());
  98   EXPECT_EQ(MOJO_RESULT_OK, callback1.last_result());
  99   EXPECT_EQ(1, callback2.result_count());
 100   EXPECT_EQ(MOJO_RESULT_OK, callback2.last_result());
 101 }
 102
 103 // Verifies cancel works.
 104 TEST_F(AsyncWaiterTest, CancelCallback) {
 105   TestAsyncWaitCallback callback;
 106   MessagePipe test_pipe;
 107   EXPECT_TRUE(test::WriteTextMessage(test_pipe.handle1.get(), std::string()));
 108
 109   CallCancelWait(
 110       CallAsyncWait(test_pipe.handle0.get(),
 111                     MOJO_WAIT_FLAG_READABLE,
 112                     &callback));
 113   RunLoop::current()->Run();
 114   EXPECT_EQ(0, callback.result_count());
 115 }
 116
 117 }  // namespace
 118 }  // namespace mojo