| /* |
| * libjingle |
| * Copyright 2004--2011, Google Inc. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright notice, |
| * this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * 3. The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
| * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
| * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "talk/base/bind.h" |
| #include "talk/base/callback.h" |
| #include "talk/base/gunit.h" |
| |
| namespace talk_base { |
| |
| namespace { |
| |
| void f() {} |
| int g() { return 42; } |
| int h(int x) { return x * x; } |
| void i(int& x) { x *= x; } // NOLINT: Testing refs |
| |
| struct BindTester { |
| int a() { return 24; } |
| int b(int x) const { return x * x; } |
| }; |
| |
| } // namespace |
| |
| TEST(CallbackTest, VoidReturn) { |
| Callback0<void> cb; |
| EXPECT_TRUE(cb.empty()); |
| cb(); // Executing an empty callback should not crash. |
| cb = Callback0<void>(&f); |
| EXPECT_FALSE(cb.empty()); |
| cb(); |
| } |
| |
| TEST(CallbackTest, IntReturn) { |
| Callback0<int> cb; |
| EXPECT_TRUE(cb.empty()); |
| cb = Callback0<int>(&g); |
| EXPECT_FALSE(cb.empty()); |
| EXPECT_EQ(42, cb()); |
| EXPECT_EQ(42, cb()); |
| } |
| |
| TEST(CallbackTest, OneParam) { |
| Callback1<int, int> cb1(&h); |
| EXPECT_FALSE(cb1.empty()); |
| EXPECT_EQ(9, cb1(-3)); |
| EXPECT_EQ(100, cb1(10)); |
| |
| // Try clearing a callback. |
| cb1 = Callback1<int, int>(); |
| EXPECT_TRUE(cb1.empty()); |
| |
| // Try a callback with a ref parameter. |
| Callback1<void, int&> cb2(&i); |
| int x = 3; |
| cb2(x); |
| EXPECT_EQ(9, x); |
| cb2(x); |
| EXPECT_EQ(81, x); |
| } |
| |
| TEST(CallbackTest, WithBind) { |
| BindTester t; |
| Callback0<int> cb1 = Bind(&BindTester::a, &t); |
| EXPECT_EQ(24, cb1()); |
| EXPECT_EQ(24, cb1()); |
| cb1 = Bind(&BindTester::b, &t, 10); |
| EXPECT_EQ(100, cb1()); |
| EXPECT_EQ(100, cb1()); |
| cb1 = Bind(&BindTester::b, &t, 5); |
| EXPECT_EQ(25, cb1()); |
| EXPECT_EQ(25, cb1()); |
| } |
| |
| } // namespace talk_base |