sergeyu@chromium.org | 70022fa | 2014-02-07 19:03:26 +0000 | [diff] [blame] | 1 | /* |
| 2 | * libjingle |
| 3 | * Copyright 2004--2011, Google Inc. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions are met: |
| 7 | * |
| 8 | * 1. Redistributions of source code must retain the above copyright notice, |
| 9 | * this list of conditions and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
| 11 | * this list of conditions and the following disclaimer in the documentation |
| 12 | * and/or other materials provided with the distribution. |
| 13 | * 3. The name of the author may not be used to endorse or promote products |
| 14 | * derived from this software without specific prior written permission. |
| 15 | * |
| 16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 17 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 18 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
| 19 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 20 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 21 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
| 22 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| 23 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| 24 | * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| 25 | * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 26 | */ |
| 27 | |
| 28 | #include "talk/base/bind.h" |
| 29 | #include "talk/base/callback.h" |
| 30 | #include "talk/base/gunit.h" |
| 31 | |
| 32 | namespace talk_base { |
| 33 | |
| 34 | namespace { |
| 35 | |
| 36 | void f() {} |
| 37 | int g() { return 42; } |
| 38 | int h(int x) { return x * x; } |
| 39 | void i(int& x) { x *= x; } // NOLINT: Testing refs |
| 40 | |
| 41 | struct BindTester { |
| 42 | int a() { return 24; } |
| 43 | int b(int x) const { return x * x; } |
| 44 | }; |
| 45 | |
| 46 | } // namespace |
| 47 | |
| 48 | TEST(CallbackTest, VoidReturn) { |
| 49 | Callback0<void> cb; |
| 50 | EXPECT_TRUE(cb.empty()); |
| 51 | cb(); // Executing an empty callback should not crash. |
| 52 | cb = Callback0<void>(&f); |
| 53 | EXPECT_FALSE(cb.empty()); |
| 54 | cb(); |
| 55 | } |
| 56 | |
| 57 | TEST(CallbackTest, IntReturn) { |
| 58 | Callback0<int> cb; |
| 59 | EXPECT_TRUE(cb.empty()); |
| 60 | cb = Callback0<int>(&g); |
| 61 | EXPECT_FALSE(cb.empty()); |
| 62 | EXPECT_EQ(42, cb()); |
| 63 | EXPECT_EQ(42, cb()); |
| 64 | } |
| 65 | |
| 66 | TEST(CallbackTest, OneParam) { |
| 67 | Callback1<int, int> cb1(&h); |
| 68 | EXPECT_FALSE(cb1.empty()); |
| 69 | EXPECT_EQ(9, cb1(-3)); |
| 70 | EXPECT_EQ(100, cb1(10)); |
| 71 | |
| 72 | // Try clearing a callback. |
| 73 | cb1 = Callback1<int, int>(); |
| 74 | EXPECT_TRUE(cb1.empty()); |
| 75 | |
| 76 | // Try a callback with a ref parameter. |
| 77 | Callback1<void, int&> cb2(&i); |
| 78 | int x = 3; |
| 79 | cb2(x); |
| 80 | EXPECT_EQ(9, x); |
| 81 | cb2(x); |
| 82 | EXPECT_EQ(81, x); |
| 83 | } |
| 84 | |
| 85 | TEST(CallbackTest, WithBind) { |
| 86 | BindTester t; |
| 87 | Callback0<int> cb1 = Bind(&BindTester::a, &t); |
| 88 | EXPECT_EQ(24, cb1()); |
| 89 | EXPECT_EQ(24, cb1()); |
| 90 | cb1 = Bind(&BindTester::b, &t, 10); |
| 91 | EXPECT_EQ(100, cb1()); |
| 92 | EXPECT_EQ(100, cb1()); |
| 93 | cb1 = Bind(&BindTester::b, &t, 5); |
| 94 | EXPECT_EQ(25, cb1()); |
| 95 | EXPECT_EQ(25, cb1()); |
| 96 | } |
| 97 | |
| 98 | } // namespace talk_base |