| /* |
| * Copyright (C) 2014 Apple Inc. All rights reserved. |
| * |
| * 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. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``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 APPLE INC. OR ITS CONTRIBUTORS |
| * 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 "config.h" |
| |
| #include <wtf/Optional.h> |
| |
| namespace TestWebKitAPI { |
| |
| TEST(WTF_Optional, Disengaged) |
| { |
| { |
| std::optional<int> optional; |
| |
| EXPECT_FALSE(static_cast<bool>(optional)); |
| } |
| |
| { |
| std::optional<int> optional { std::nullopt }; |
| |
| EXPECT_FALSE(static_cast<bool>(optional)); |
| } |
| } |
| |
| TEST(WTF_Optional, Engaged) |
| { |
| std::optional<int> optional { 10 }; |
| |
| EXPECT_TRUE(static_cast<bool>(optional)); |
| EXPECT_EQ(10, optional.value()); |
| } |
| |
| TEST(WTF_Optional, Destructor) |
| { |
| static bool didCallDestructor = false; |
| struct A { |
| ~A() |
| { |
| EXPECT_FALSE(didCallDestructor); |
| didCallDestructor = true; |
| } |
| }; |
| |
| { |
| std::optional<A> optional { std::in_place }; |
| |
| EXPECT_TRUE(static_cast<bool>(optional)); |
| } |
| |
| EXPECT_TRUE(didCallDestructor); |
| } |
| |
| TEST(WTF_Optional, Callback) |
| { |
| bool called = false; |
| std::optional<int> a; |
| int result = valueOrCompute(a, [&] { |
| called = true; |
| return 300; |
| }); |
| EXPECT_TRUE(called); |
| EXPECT_EQ(result, 300); |
| |
| a = 250; |
| called = false; |
| result = valueOrCompute(a, [&] { |
| called = true; |
| return 300; |
| }); |
| EXPECT_FALSE(called); |
| EXPECT_EQ(result, 250); |
| } |
| |
| TEST(WTF_Optional, Equality) |
| { |
| std::optional<int> unengaged1; |
| std::optional<int> unengaged2; |
| |
| std::optional<int> engaged1 { 1 }; |
| std::optional<int> engaged2 { 2 }; |
| std::optional<int> engagedx2 { 2 }; |
| |
| EXPECT_TRUE(unengaged1 == unengaged2); |
| EXPECT_FALSE(engaged1 == engaged2); |
| EXPECT_FALSE(engaged1 == unengaged1); |
| EXPECT_TRUE(engaged2 == engagedx2); |
| |
| EXPECT_TRUE(unengaged1 == std::nullopt); |
| EXPECT_FALSE(engaged1 == std::nullopt); |
| EXPECT_TRUE(std::nullopt == unengaged1); |
| EXPECT_FALSE(std::nullopt == engaged1); |
| |
| EXPECT_TRUE(engaged1 == 1); |
| EXPECT_TRUE(1 == engaged1); |
| EXPECT_FALSE(unengaged1 == 1); |
| EXPECT_FALSE(1 == unengaged1); |
| } |
| |
| TEST(WTF_Optional, Inequality) |
| { |
| std::optional<int> unengaged1; |
| std::optional<int> unengaged2; |
| |
| std::optional<int> engaged1 { 1 }; |
| std::optional<int> engaged2 { 2 }; |
| std::optional<int> engagedx2 { 2 }; |
| |
| EXPECT_FALSE(unengaged1 != unengaged2); |
| EXPECT_TRUE(engaged1 != engaged2); |
| EXPECT_TRUE(engaged1 != unengaged1); |
| EXPECT_FALSE(engaged2 != engagedx2); |
| |
| EXPECT_FALSE(unengaged1 != std::nullopt); |
| EXPECT_TRUE(engaged1 != std::nullopt); |
| EXPECT_FALSE(std::nullopt != unengaged1); |
| EXPECT_TRUE(std::nullopt != engaged1); |
| |
| EXPECT_FALSE(engaged1 != 1); |
| EXPECT_TRUE(engaged1 != 2); |
| EXPECT_FALSE(1 != engaged1); |
| EXPECT_TRUE(2 != engaged1); |
| |
| EXPECT_TRUE(unengaged1 != 1); |
| EXPECT_TRUE(1 != unengaged1); |
| } |
| |
| |
| } // namespace TestWebKitAPI |