4c03b2e97c
BUG=none TEST=none R=groby,awong,csilv Review URL: http://codereview.chromium.org/9028009 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@116169 0039d316-1c4b-4281-b951-d872f2087c98
135 lines
3.7 KiB
C++
135 lines
3.7 KiB
C++
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/callback.h"
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#include "base/callback_internal.h"
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#include "base/memory/scoped_ptr.h"
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#include "testing/gtest/include/gtest/gtest.h"
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namespace base {
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namespace {
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class HelperObject {
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public:
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HelperObject() : next_number_(0) { }
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int GetNextNumber() { return ++next_number_; }
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void GetNextNumberArg(int* number) { *number = GetNextNumber(); }
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private:
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int next_number_;
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};
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struct FakeInvoker {
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typedef void(RunType)(internal::BindStateBase*);
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static void Run(internal::BindStateBase*) {
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}
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};
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} // namespace
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namespace internal {
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template <typename Runnable, typename RunType, typename BoundArgsType>
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struct BindState;
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// White-box testpoints to inject into a Callback<> object for checking
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// comparators and emptiness APIs. Use a BindState that is specialized
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// based on a type we declared in the anonymous namespace above to remove any
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// chance of colliding with another instantiation and breaking the
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// one-definition-rule.
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template <>
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struct BindState<void(void), void(void), void(FakeInvoker)>
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: public BindStateBase {
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public:
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typedef FakeInvoker InvokerType;
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};
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template <>
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struct BindState<void(void), void(void),
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void(FakeInvoker, FakeInvoker)>
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: public BindStateBase {
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public:
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typedef FakeInvoker InvokerType;
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};
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} // namespace internal
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namespace {
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typedef internal::BindState<void(void), void(void), void(FakeInvoker)>
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FakeBindState1;
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typedef internal::BindState<void(void), void(void),
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void(FakeInvoker, FakeInvoker)>
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FakeBindState2;
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class CallbackTest : public ::testing::Test {
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public:
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CallbackTest()
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: callback_a_(new FakeBindState1()),
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callback_b_(new FakeBindState2()) {
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}
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virtual ~CallbackTest() {
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}
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protected:
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Callback<void(void)> callback_a_;
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const Callback<void(void)> callback_b_; // Ensure APIs work with const.
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Callback<void(void)> null_callback_;
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};
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// Ensure we can create unbound callbacks. We need this to be able to store
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// them in class members that can be initialized later.
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TEST_F(CallbackTest, DefaultConstruction) {
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Callback<void(void)> c0;
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Callback<void(int)> c1;
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Callback<void(int,int)> c2;
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Callback<void(int,int,int)> c3;
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Callback<void(int,int,int,int)> c4;
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Callback<void(int,int,int,int,int)> c5;
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Callback<void(int,int,int,int,int,int)> c6;
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EXPECT_TRUE(c0.is_null());
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EXPECT_TRUE(c1.is_null());
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EXPECT_TRUE(c2.is_null());
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EXPECT_TRUE(c3.is_null());
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EXPECT_TRUE(c4.is_null());
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EXPECT_TRUE(c5.is_null());
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EXPECT_TRUE(c6.is_null());
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}
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TEST_F(CallbackTest, IsNull) {
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EXPECT_TRUE(null_callback_.is_null());
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EXPECT_FALSE(callback_a_.is_null());
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EXPECT_FALSE(callback_b_.is_null());
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}
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TEST_F(CallbackTest, Equals) {
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EXPECT_TRUE(callback_a_.Equals(callback_a_));
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EXPECT_FALSE(callback_a_.Equals(callback_b_));
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EXPECT_FALSE(callback_b_.Equals(callback_a_));
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// We should compare based on instance, not type.
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Callback<void(void)> callback_c(new FakeBindState1());
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Callback<void(void)> callback_a2 = callback_a_;
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EXPECT_TRUE(callback_a_.Equals(callback_a2));
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EXPECT_FALSE(callback_a_.Equals(callback_c));
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// Empty, however, is always equal to empty.
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Callback<void(void)> empty2;
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EXPECT_TRUE(null_callback_.Equals(empty2));
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}
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TEST_F(CallbackTest, Reset) {
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// Resetting should bring us back to empty.
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ASSERT_FALSE(callback_a_.is_null());
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ASSERT_FALSE(callback_a_.Equals(null_callback_));
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callback_a_.Reset();
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EXPECT_TRUE(callback_a_.is_null());
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EXPECT_TRUE(callback_a_.Equals(null_callback_));
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}
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} // namespace
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} // namespace base
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