| // Copyright 2013 Google Inc. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| // |
| // Author: gee@google.com (Adam Gee) |
| |
| #include "pagespeed/kernel/base/callback.h" |
| |
| #include "pagespeed/kernel/base/gtest.h" |
| #include "pagespeed/kernel/base/scoped_ptr.h" |
| |
| namespace net_instaweb { |
| |
| namespace { |
| |
| const int kNumRunsForPermanentCallbacks = 5; |
| |
| class TestClass { |
| public: |
| TestClass() |
| : x_(0), |
| runs_(0) { |
| } |
| |
| void Method1(int x) { |
| x_ = x; |
| ++runs_; |
| } |
| |
| void Method1ConstRefArg(const int& x) { |
| x_ = 2 * x; |
| ++runs_; |
| } |
| |
| void Method2(int a, int b) { |
| x_ = a + b; |
| ++runs_; |
| } |
| |
| void Method2ConstRefArg(const int& a, int b) { |
| x_ = a + b; |
| ++runs_; |
| } |
| |
| void Method3(int a, int b, int c) { |
| x_ = a + b + c; |
| ++runs_; |
| } |
| |
| void Method3ConstRefArg(const int& a, int b, int c) { |
| x_ = a + b + c; |
| ++runs_; |
| } |
| |
| int x() const { return x_; } |
| int runs() const { return runs_; } |
| |
| private: |
| int x_; |
| int runs_; |
| }; |
| |
| TEST(CallbackTest, MemberCallback_0_1) { |
| TestClass test_class; |
| Callback1<int>* cb = NewCallback(&test_class, &TestClass::Method1); |
| EXPECT_EQ(0, test_class.x()); |
| cb->Run(100); |
| EXPECT_EQ(100, test_class.x()); |
| } |
| |
| TEST(CallbackTest, MemberCallback_0_1_ConstRefArg) { |
| TestClass test_class; |
| Callback1<const int&>* cb = NewCallback(&test_class, |
| &TestClass::Method1ConstRefArg); |
| EXPECT_EQ(0, test_class.x()); |
| cb->Run(100); |
| EXPECT_EQ(200, test_class.x()); |
| } |
| |
| TEST(CallbackTest, MemberCallback_1_1) { |
| TestClass test_class; |
| Callback1<int>* cb = NewCallback(&test_class, &TestClass::Method2, 1); |
| EXPECT_EQ(0, test_class.x()); |
| cb->Run(2); |
| EXPECT_EQ(3, test_class.x()); |
| } |
| |
| TEST(CallbackTest, MemberCallback_1_1ConstRefArg) { |
| TestClass test_class; |
| int arg = 1; |
| Callback1<int>* cb = NewCallback(&test_class, |
| &TestClass::Method2ConstRefArg, |
| arg); |
| // Increment x to show that the reference is followed, rather having |
| // arg's current value of 1 captured at the time the callback was |
| // instantiated. |
| ++arg; |
| EXPECT_EQ(2, arg); |
| EXPECT_EQ(0, test_class.x()); |
| cb->Run(2); |
| // The callback should have the bound value of 1, even though it was passed |
| // by reference. |
| EXPECT_EQ(3, test_class.x()); |
| } |
| |
| TEST(CallbackTest, PermanentMemberCallback_0_1) { |
| TestClass test_class; |
| scoped_ptr<Callback1<int> > cb( |
| NewPermanentCallback(&test_class, &TestClass::Method1)); |
| EXPECT_EQ(0, test_class.x()); |
| for (int i = 0; i < kNumRunsForPermanentCallbacks; ++i) { |
| cb->Run(100); |
| EXPECT_EQ(100, test_class.x()); |
| } |
| EXPECT_EQ(kNumRunsForPermanentCallbacks, test_class.runs()); |
| } |
| |
| TEST(CallbackTest, PermanentMemberCallback_0_1_ConstRefArg) { |
| TestClass test_class; |
| scoped_ptr<Callback1<const int&> > cb(NewPermanentCallback( |
| &test_class, &TestClass::Method1ConstRefArg)); |
| EXPECT_EQ(0, test_class.x()); |
| for (int i = 0; i < kNumRunsForPermanentCallbacks; ++i) { |
| cb->Run(100); |
| EXPECT_EQ(200, test_class.x()); |
| } |
| EXPECT_EQ(kNumRunsForPermanentCallbacks, test_class.runs()); |
| } |
| |
| TEST(CallbackTest, PermanentMemberCallback_1_1) { |
| TestClass test_class; |
| scoped_ptr<Callback1<int> > cb(NewPermanentCallback( |
| &test_class, &TestClass::Method2, 1)); |
| EXPECT_EQ(0, test_class.x()); |
| for (int i = 0; i < kNumRunsForPermanentCallbacks; ++i) { |
| cb->Run(2); |
| EXPECT_EQ(3, test_class.x()); |
| } |
| EXPECT_EQ(kNumRunsForPermanentCallbacks, test_class.runs()); |
| } |
| |
| TEST(CallbackTest, PermanentMemberCallback_1_1ConstRefArg) { |
| TestClass test_class; |
| int arg = 1; |
| scoped_ptr<Callback1<int> > cb(NewPermanentCallback( |
| &test_class, &TestClass::Method2ConstRefArg, arg)); |
| // Increment x showing the reference in the callback tracks the increment. |
| ++arg; |
| EXPECT_EQ(2, arg); |
| EXPECT_EQ(0, test_class.x()); |
| for (int i = 0; i < kNumRunsForPermanentCallbacks; ++i) { |
| cb->Run(2); |
| // The callback should have the bound value of 1, even though it was passed |
| // by reference. |
| EXPECT_EQ(3, test_class.x()); |
| } |
| EXPECT_EQ(kNumRunsForPermanentCallbacks, test_class.runs()); |
| } |
| |
| TEST(CallbackTest, MemberCallback_0_2) { |
| TestClass test_class; |
| Callback2<int, int>* cb = NewCallback(&test_class, &TestClass::Method2); |
| EXPECT_EQ(0, test_class.x()); |
| cb->Run(100, 200); |
| EXPECT_EQ(300, test_class.x()); |
| } |
| |
| TEST(CallbackTest, MemberCallback_0_2_ConstRefArg) { |
| TestClass test_class; |
| Callback2<const int&, int>* cb = |
| NewCallback(&test_class, &TestClass::Method2ConstRefArg); |
| EXPECT_EQ(0, test_class.x()); |
| cb->Run(100, 1000); |
| EXPECT_EQ(1100, test_class.x()); |
| } |
| |
| TEST(CallbackTest, MemberCallback_1_2) { |
| TestClass test_class; |
| Callback2<int, int>* cb = NewCallback(&test_class, &TestClass::Method3, 1); |
| EXPECT_EQ(0, test_class.x()); |
| cb->Run(10, 100); |
| EXPECT_EQ(111, test_class.x()); |
| } |
| |
| TEST(CallbackTest, MemberCallback_1_2ConstRefArg) { |
| TestClass test_class; |
| int arg = 1; |
| Callback2<int, int>* cb = NewCallback(&test_class, |
| &TestClass::Method3ConstRefArg, |
| arg); |
| // Increment x. |
| ++arg; |
| EXPECT_EQ(2, arg); |
| EXPECT_EQ(0, test_class.x()); |
| cb->Run(10, 100); |
| // The callback should include the bound value of 1 (+ 100 + 10), |
| // even though it was passed by reference. |
| EXPECT_EQ(111, test_class.x()); |
| } |
| |
| TEST(CallbackTest, PermanentMemberCallback_0_2) { |
| TestClass test_class; |
| scoped_ptr<Callback2<int, int> > cb( |
| NewPermanentCallback(&test_class, &TestClass::Method2)); |
| EXPECT_EQ(0, test_class.x()); |
| for (int i = 0; i < kNumRunsForPermanentCallbacks; ++i) { |
| cb->Run(100, 1000); |
| EXPECT_EQ(1100, test_class.x()); |
| } |
| EXPECT_EQ(kNumRunsForPermanentCallbacks, test_class.runs()); |
| } |
| |
| TEST(CallbackTest, PermanentMemberCallback_0_2_ConstRefArg) { |
| TestClass test_class; |
| scoped_ptr<Callback2<const int&, int> > cb(NewPermanentCallback( |
| &test_class, &TestClass::Method2ConstRefArg)); |
| EXPECT_EQ(0, test_class.x()); |
| for (int i = 0; i < kNumRunsForPermanentCallbacks; ++i) { |
| cb->Run(100, 1000); |
| EXPECT_EQ(1100, test_class.x()); |
| } |
| EXPECT_EQ(kNumRunsForPermanentCallbacks, test_class.runs()); |
| } |
| |
| TEST(CallbackTest, PermanentMemberCallback_1_2) { |
| TestClass test_class; |
| scoped_ptr<Callback2<int, int> > cb(NewPermanentCallback( |
| &test_class, &TestClass::Method3, 1)); |
| EXPECT_EQ(0, test_class.x()); |
| for (int i = 0; i < kNumRunsForPermanentCallbacks; ++i) { |
| cb->Run(10, 100); |
| EXPECT_EQ(111, test_class.x()); |
| } |
| EXPECT_EQ(kNumRunsForPermanentCallbacks, test_class.runs()); |
| } |
| |
| TEST(CallbackTest, PermanentMemberCallback_1_2ConstRefArg) { |
| TestClass test_class; |
| int arg = 1; |
| scoped_ptr<Callback2<int, int> > cb(NewPermanentCallback( |
| &test_class, &TestClass::Method3ConstRefArg, arg)); |
| ++arg; |
| EXPECT_EQ(0, test_class.x()); |
| for (int i = 0; i < kNumRunsForPermanentCallbacks; ++i) { |
| cb->Run(10, 100); |
| // The callback should have the bound value of 1, even though it was passed |
| // by reference. |
| EXPECT_EQ(111, test_class.x()); |
| } |
| EXPECT_EQ(kNumRunsForPermanentCallbacks, test_class.runs()); |
| } |
| |
| } // namespace |
| |
| } // namespace net_instaweb |