| /* |
| * Copyright (C) 2022 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "chre/util/intrusive_list.h" |
| |
| #include "gtest/gtest.h" |
| |
| using chre::IntrusiveList; |
| using chre::ListNode; |
| |
| TEST(IntrusiveList, EmptyByDefault) { |
| IntrusiveList<int> testLinkedList; |
| EXPECT_EQ(testLinkedList.size(), 0); |
| EXPECT_TRUE(testLinkedList.empty()); |
| } |
| |
| TEST(IntrusiveList, PushReadAndPop) { |
| typedef ListNode<int> ListIntNode; |
| |
| ListIntNode nodeA(0); |
| ListIntNode nodeB(1); |
| ListIntNode nodeC(2); |
| ListIntNode nodeD(3); |
| IntrusiveList<int> testLinkedList; |
| |
| testLinkedList.link_back(&nodeA); |
| testLinkedList.link_back(&nodeB); |
| testLinkedList.link_back(&nodeC); |
| EXPECT_EQ(testLinkedList.size(), 3); |
| |
| EXPECT_EQ(testLinkedList.front().item, nodeA.item); |
| EXPECT_EQ(testLinkedList.back().item, nodeC.item); |
| |
| testLinkedList.unlink_front(); |
| EXPECT_EQ(testLinkedList.size(), 2); |
| EXPECT_EQ(testLinkedList.front().item, nodeB.item); |
| |
| testLinkedList.unlink_back(); |
| EXPECT_EQ(testLinkedList.size(), 1); |
| EXPECT_EQ(testLinkedList.back().item, nodeB.item); |
| |
| testLinkedList.unlink_back(); |
| EXPECT_EQ(testLinkedList.size(), 0); |
| EXPECT_TRUE(testLinkedList.empty()); |
| |
| testLinkedList.link_back(&nodeD); |
| EXPECT_EQ(testLinkedList.size(), 1); |
| EXPECT_EQ(testLinkedList.back().item, nodeD.item); |
| EXPECT_EQ(testLinkedList.front().item, nodeD.item); |
| } |
| |
| TEST(IntrusiveList, CatchInvalidCallToEmptyList) { |
| IntrusiveList<int> testList; |
| ASSERT_DEATH(testList.front(), ""); |
| ASSERT_DEATH(testList.back(), ""); |
| ASSERT_DEATH(testList.unlink_front(), ""); |
| ASSERT_DEATH(testList.unlink_back(), ""); |
| } |
| |
| TEST(IntrusiveList, DestructorCleanUpLink) { |
| typedef ListNode<int> ListIntNode; |
| |
| ListIntNode testInput[]{ |
| ListIntNode(0), ListIntNode(1), ListIntNode(2), |
| ListIntNode(3), ListIntNode(4), |
| }; |
| |
| { |
| IntrusiveList<int> testLinkedList; |
| for (auto &node : testInput) { |
| testLinkedList.link_back(&node); |
| } |
| |
| int idx = 0; |
| for (auto const &node : testLinkedList) { |
| EXPECT_EQ(node.item, idx++); |
| } |
| } |
| |
| for (auto &node : testInput) { |
| EXPECT_EQ(node.node.next, nullptr); |
| EXPECT_EQ(node.node.prev, nullptr); |
| } |
| } |
| |
| TEST(IntrusiveList, AccessMiddleTest) { |
| typedef ListNode<int> ListIntNode; |
| |
| ListIntNode testListIntNodes[]{ |
| ListIntNode(0), ListIntNode(1), ListIntNode(2), |
| ListIntNode(3), ListIntNode(4), |
| }; |
| |
| IntrusiveList<int> testLinkedList; |
| |
| for (auto &node : testListIntNodes) { |
| testLinkedList.link_back(&node); |
| } |
| |
| testLinkedList.unlink_node(&testListIntNodes[1]); // removes ListIntNode(1) |
| EXPECT_EQ(testListIntNodes[0].node.next, &testListIntNodes[2].node); |
| EXPECT_EQ(testLinkedList.size(), 4); |
| |
| testLinkedList.link_after(&testListIntNodes[0], |
| &testListIntNodes[1]); // add back ListIntNode(1) |
| EXPECT_EQ(testListIntNodes[0].node.next, &testListIntNodes[1].node); |
| EXPECT_EQ(testLinkedList.size(), 5); |
| } |