118 lines
3.1 KiB
C++
118 lines
3.1 KiB
C++
/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <stdlib.h>
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#include <string>
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#include <sstream>
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#include <gtest/gtest.h>
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#include "../linked_list.h"
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namespace {
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bool alloc_called = false;
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bool free_called = false;
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class LinkedListTestAllocator {
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public:
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typedef LinkedListEntry<const char> entry_t;
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static entry_t* alloc() {
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alloc_called = true;
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return reinterpret_cast<entry_t*>(::malloc(sizeof(entry_t)));
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}
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static void free(entry_t* p) {
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free_called = true;
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::free(p);
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}
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private:
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DISALLOW_IMPLICIT_CONSTRUCTORS(LinkedListTestAllocator);
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};
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typedef LinkedList<const char, LinkedListTestAllocator> test_list_t;
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std::string test_list_to_string(test_list_t& list) {
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std::stringstream ss;
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list.for_each([&] (const char* c) {
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ss << c;
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});
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return ss.str();
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}
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};
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TEST(linked_list, simple) {
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alloc_called = free_called = false;
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test_list_t list;
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ASSERT_EQ("", test_list_to_string(list));
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ASSERT_TRUE(!alloc_called);
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ASSERT_TRUE(!free_called);
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list.push_front("a");
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ASSERT_TRUE(alloc_called);
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ASSERT_TRUE(!free_called);
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ASSERT_EQ("a", test_list_to_string(list));
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list.push_front("b");
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ASSERT_EQ("ba", test_list_to_string(list));
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list.push_front("c");
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list.push_front("d");
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ASSERT_EQ("dcba", test_list_to_string(list));
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ASSERT_TRUE(alloc_called);
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ASSERT_TRUE(!free_called);
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alloc_called = free_called = false;
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list.remove_if([] (const char* c) {
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return *c == 'c';
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});
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ASSERT_TRUE(!alloc_called);
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ASSERT_TRUE(!free_called);
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ASSERT_EQ("dba", test_list_to_string(list));
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alloc_called = free_called = false;
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list.remove_if([] (const char* c) {
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return *c == '2';
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});
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ASSERT_TRUE(!alloc_called);
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ASSERT_TRUE(!free_called);
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ASSERT_EQ("dba", test_list_to_string(list));
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list.clear();
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ASSERT_TRUE(!alloc_called);
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ASSERT_TRUE(free_called);
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ASSERT_EQ("", test_list_to_string(list));
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}
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TEST(linked_list, push_pop) {
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test_list_t list;
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list.push_front("b");
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list.push_front("a");
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ASSERT_EQ("ab", test_list_to_string(list));
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list.push_back("c");
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ASSERT_EQ("abc", test_list_to_string(list));
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ASSERT_EQ("a", list.pop_front());
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ASSERT_EQ("bc", test_list_to_string(list));
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ASSERT_EQ("b", list.pop_front());
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ASSERT_EQ("c", test_list_to_string(list));
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ASSERT_EQ("c", list.pop_front());
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ASSERT_EQ("", test_list_to_string(list));
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ASSERT_TRUE(list.pop_front() == nullptr);
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list.push_back("r");
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ASSERT_EQ("r", test_list_to_string(list));
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ASSERT_EQ("r", list.pop_front());
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ASSERT_TRUE(list.pop_front() == nullptr);
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}
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