henrike@webrtc.org | f7795df | 2014-05-13 18:00:26 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2004 The WebRTC Project Authors. All rights reserved. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license |
| 5 | * that can be found in the LICENSE file in the root of the source |
| 6 | * tree. An additional intellectual property rights grant can be found |
| 7 | * in the file PATENTS. All contributing project authors may |
| 8 | * be found in the AUTHORS file in the root of the source tree. |
| 9 | */ |
| 10 | |
| 11 | #include "webrtc/base/bind.h" |
| 12 | #include "webrtc/base/callback.h" |
| 13 | #include "webrtc/base/gunit.h" |
| 14 | |
| 15 | namespace rtc { |
| 16 | |
| 17 | namespace { |
| 18 | |
| 19 | void f() {} |
| 20 | int g() { return 42; } |
| 21 | int h(int x) { return x * x; } |
| 22 | void i(int& x) { x *= x; } // NOLINT: Testing refs |
| 23 | |
| 24 | struct BindTester { |
| 25 | int a() { return 24; } |
| 26 | int b(int x) const { return x * x; } |
| 27 | }; |
| 28 | |
| 29 | } // namespace |
| 30 | |
| 31 | TEST(CallbackTest, VoidReturn) { |
| 32 | Callback0<void> cb; |
| 33 | EXPECT_TRUE(cb.empty()); |
| 34 | cb(); // Executing an empty callback should not crash. |
| 35 | cb = Callback0<void>(&f); |
| 36 | EXPECT_FALSE(cb.empty()); |
| 37 | cb(); |
| 38 | } |
| 39 | |
| 40 | TEST(CallbackTest, IntReturn) { |
| 41 | Callback0<int> cb; |
| 42 | EXPECT_TRUE(cb.empty()); |
| 43 | cb = Callback0<int>(&g); |
| 44 | EXPECT_FALSE(cb.empty()); |
| 45 | EXPECT_EQ(42, cb()); |
| 46 | EXPECT_EQ(42, cb()); |
| 47 | } |
| 48 | |
| 49 | TEST(CallbackTest, OneParam) { |
| 50 | Callback1<int, int> cb1(&h); |
| 51 | EXPECT_FALSE(cb1.empty()); |
| 52 | EXPECT_EQ(9, cb1(-3)); |
| 53 | EXPECT_EQ(100, cb1(10)); |
| 54 | |
| 55 | // Try clearing a callback. |
| 56 | cb1 = Callback1<int, int>(); |
| 57 | EXPECT_TRUE(cb1.empty()); |
| 58 | |
| 59 | // Try a callback with a ref parameter. |
| 60 | Callback1<void, int&> cb2(&i); |
| 61 | int x = 3; |
| 62 | cb2(x); |
| 63 | EXPECT_EQ(9, x); |
| 64 | cb2(x); |
| 65 | EXPECT_EQ(81, x); |
| 66 | } |
| 67 | |
| 68 | TEST(CallbackTest, WithBind) { |
| 69 | BindTester t; |
| 70 | Callback0<int> cb1 = Bind(&BindTester::a, &t); |
| 71 | EXPECT_EQ(24, cb1()); |
| 72 | EXPECT_EQ(24, cb1()); |
| 73 | cb1 = Bind(&BindTester::b, &t, 10); |
| 74 | EXPECT_EQ(100, cb1()); |
| 75 | EXPECT_EQ(100, cb1()); |
| 76 | cb1 = Bind(&BindTester::b, &t, 5); |
| 77 | EXPECT_EQ(25, cb1()); |
| 78 | EXPECT_EQ(25, cb1()); |
| 79 | } |
| 80 | |
| 81 | } // namespace rtc |