base/task_runner_util_unittest.cc

   1 // Copyright (c) 2012 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 "base/task_runner_util.h"
   6
   7 #include "base/bind.h"
   8 #include "base/message_loop/message_loop.h"
   9 #include "base/run_loop.h"
  10 #include "testing/gtest/include/gtest/gtest.h"
  11
  12 namespace base {
  13
  14 namespace {
  15
  16 int ReturnFourtyTwo() {
  17   return 42;
  18 }
  19
  20 void StoreValue(int* destination, int value) {
  21   *destination = value;
  22 }
  23
  24 void StoreDoubleValue(double* destination, double value) {
  25   *destination = value;
  26 }
  27
  28 int g_foo_destruct_count = 0;
  29 int g_foo_free_count = 0;
  30
  31 struct Foo {
  32   ~Foo() {
  33     ++g_foo_destruct_count;
  34   }
  35 };
  36
  37 scoped_ptr<Foo> CreateFoo() {
  38   return scoped_ptr<Foo>(new Foo);
  39 }
  40
  41 void ExpectFoo(scoped_ptr<Foo> foo) {
  42   EXPECT_TRUE(foo.get());
  43   scoped_ptr<Foo> local_foo(foo.Pass());
  44   EXPECT_TRUE(local_foo.get());
  45   EXPECT_FALSE(foo.get());
  46 }
  47
  48 struct FooDeleter {
  49   void operator()(Foo* foo) const {
  50     ++g_foo_free_count;
  51     delete foo;
  52   };
  53 };
  54
  55 scoped_ptr<Foo, FooDeleter> CreateScopedFoo() {
  56   return scoped_ptr<Foo, FooDeleter>(new Foo);
  57 }
  58
  59 void ExpectScopedFoo(scoped_ptr<Foo, FooDeleter> foo) {
  60   EXPECT_TRUE(foo.get());
  61   scoped_ptr<Foo, FooDeleter> local_foo(foo.Pass());
  62   EXPECT_TRUE(local_foo.get());
  63   EXPECT_FALSE(foo.get());
  64 }
  65
  66 }  // namespace
  67
  68 TEST(TaskRunnerHelpersTest, PostTaskAndReplyWithResult) {
  69   int result = 0;
  70
  71   MessageLoop message_loop;
  72   PostTaskAndReplyWithResult(message_loop.message_loop_proxy().get(),
  73                              FROM_HERE,
  74                              Bind(&ReturnFourtyTwo),
  75                              Bind(&StoreValue, &result));
  76
  77   RunLoop().RunUntilIdle();
  78
  79   EXPECT_EQ(42, result);
  80 }
  81
  82 TEST(TaskRunnerHelpersTest, PostTaskAndReplyWithResultImplicitConvert) {
  83   double result = 0;
  84
  85   MessageLoop message_loop;
  86   PostTaskAndReplyWithResult(message_loop.message_loop_proxy().get(),
  87                              FROM_HERE,
  88                              Bind(&ReturnFourtyTwo),
  89                              Bind(&StoreDoubleValue, &result));
  90
  91   RunLoop().RunUntilIdle();
  92
  93   EXPECT_DOUBLE_EQ(42.0, result);
  94 }
  95
  96 TEST(TaskRunnerHelpersTest, PostTaskAndReplyWithResultPassed) {
  97   g_foo_destruct_count = 0;
  98   g_foo_free_count = 0;
  99
 100   MessageLoop message_loop;
 101   PostTaskAndReplyWithResult(message_loop.message_loop_proxy().get(),
 102                              FROM_HERE,
 103                              Bind(&CreateFoo),
 104                              Bind(&ExpectFoo));
 105
 106   RunLoop().RunUntilIdle();
 107
 108   EXPECT_EQ(1, g_foo_destruct_count);
 109   EXPECT_EQ(0, g_foo_free_count);
 110 }
 111
 112 TEST(TaskRunnerHelpersTest, PostTaskAndReplyWithResultPassedFreeProc) {
 113   g_foo_destruct_count = 0;
 114   g_foo_free_count = 0;
 115
 116   MessageLoop message_loop;
 117   PostTaskAndReplyWithResult(message_loop.message_loop_proxy().get(),
 118                              FROM_HERE,
 119                              Bind(&CreateScopedFoo),
 120                              Bind(&ExpectScopedFoo));
 121
 122   RunLoop().RunUntilIdle();
 123
 124   EXPECT_EQ(1, g_foo_destruct_count);
 125   EXPECT_EQ(1, g_foo_free_count);
 126 }
 127
 128 }  // namespace base