Primiano Tucci | 3b39fc7 | 2019-06-22 19:05:23 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2019 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
Primiano Tucci | e4144b7 | 2019-11-07 16:10:19 +0000 | [diff] [blame] | 17 | #include "perfetto/protozero/copyable_ptr.h" |
Primiano Tucci | 3b39fc7 | 2019-06-22 19:05:23 +0100 | [diff] [blame] | 18 | |
Primiano Tucci | 919ca1e | 2019-08-21 20:26:58 +0200 | [diff] [blame] | 19 | #include "test/gtest_and_gmock.h" |
Primiano Tucci | 3b39fc7 | 2019-06-22 19:05:23 +0100 | [diff] [blame] | 20 | |
Primiano Tucci | e4144b7 | 2019-11-07 16:10:19 +0000 | [diff] [blame] | 21 | namespace protozero { |
Primiano Tucci | 3b39fc7 | 2019-06-22 19:05:23 +0100 | [diff] [blame] | 22 | namespace { |
| 23 | |
| 24 | struct X { |
| 25 | X() = default; |
| 26 | X(const X&) = default; |
| 27 | X& operator=(const X&) = default; |
| 28 | ~X() { val = -1; } |
| 29 | |
| 30 | friend bool operator==(const X& lhs, const X& rhs) { |
| 31 | return lhs.val == rhs.val; |
| 32 | } |
| 33 | |
| 34 | // Deliberately unusual implementation. |
| 35 | friend bool operator!=(const X& lhs, const X& rhs) { |
| 36 | return lhs.val == rhs.val * -1; |
| 37 | } |
| 38 | |
| 39 | int val = 0; |
| 40 | }; |
| 41 | |
| 42 | TEST(CopyablePtrTest, CopyOperators) { |
| 43 | CopyablePtr<X> p1; |
| 44 | p1->val = 1; |
| 45 | ASSERT_NE(p1.get(), nullptr); |
| 46 | ASSERT_EQ(&*p1, p1.get()); |
| 47 | |
| 48 | CopyablePtr<X> p2(p1); |
| 49 | EXPECT_NE(p1.get(), nullptr); |
| 50 | EXPECT_NE(p2.get(), nullptr); |
| 51 | EXPECT_NE(p1.get(), p2.get()); |
| 52 | |
| 53 | p2->val = 2; |
| 54 | EXPECT_EQ(p1->val, 1); |
| 55 | EXPECT_EQ(p2->val, 2); |
| 56 | |
| 57 | { |
| 58 | CopyablePtr<X> p3; |
| 59 | p3 = p1; |
| 60 | EXPECT_EQ(p3->val, 1); |
| 61 | |
| 62 | p3 = p2; |
| 63 | EXPECT_EQ(p3->val, 2); |
| 64 | |
| 65 | p3->val = 3; |
| 66 | EXPECT_EQ(p3->val, 3); |
| 67 | } |
| 68 | |
| 69 | EXPECT_EQ(p1->val, 1); |
| 70 | EXPECT_EQ(p2->val, 2); |
| 71 | } |
| 72 | |
| 73 | TEST(CopyablePtrTest, MoveOperators) { |
| 74 | CopyablePtr<X> p1; |
| 75 | p1->val = 1; |
| 76 | |
| 77 | CopyablePtr<X> p2(std::move(p1)); |
| 78 | EXPECT_EQ(p2->val, 1); |
| 79 | |
| 80 | // The moved-from object needs to stay valid and non-null. |
| 81 | EXPECT_EQ(p1->val, 0); |
| 82 | { |
| 83 | CopyablePtr<X> p3; |
| 84 | p3->val = 3; |
| 85 | p1 = std::move(p3); |
| 86 | EXPECT_EQ(p1->val, 3); |
| 87 | EXPECT_EQ(p3->val, 0); |
| 88 | } |
| 89 | EXPECT_EQ(p1->val, 3); |
| 90 | } |
| 91 | |
| 92 | TEST(CopyablePtrTest, DeepCompare) { |
| 93 | CopyablePtr<X> p1; |
| 94 | p1->val = 1; |
| 95 | |
| 96 | CopyablePtr<X> p2; |
| 97 | p2->val = 2; |
| 98 | |
| 99 | CopyablePtr<X> p3; |
| 100 | p3->val = -2; |
| 101 | |
| 102 | EXPECT_NE(p1.get(), p2.get()); |
| 103 | EXPECT_NE(p1.get(), p3.get()); |
| 104 | |
| 105 | EXPECT_FALSE(p1 == p2); |
| 106 | EXPECT_FALSE(p1 == p3); |
| 107 | EXPECT_FALSE(p2 == p3); |
| 108 | |
| 109 | EXPECT_FALSE(p1 != p2); // The operator!= is special, see above. |
| 110 | EXPECT_TRUE(p2 != p3); |
| 111 | |
| 112 | p1->val = -2; |
| 113 | EXPECT_TRUE(p1 != p2); |
| 114 | EXPECT_FALSE(p1 == p2); |
| 115 | } |
| 116 | |
| 117 | } // namespace |
Primiano Tucci | e4144b7 | 2019-11-07 16:10:19 +0000 | [diff] [blame] | 118 | } // namespace protozero |