mirror of https://github.com/ARMmbed/mbed-os.git
129 lines
3.5 KiB
C++
129 lines
3.5 KiB
C++
/* mbed Microcontroller Library
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* Copyright (c) 2018 ARM Limited
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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 "mbed.h"
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#include "greentea-client/test_env.h"
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#include "utest/utest.h"
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#include "unity/unity.h"
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#include "platform/SharedPtr.h"
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using utest::v1::Case;
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struct TestStruct {
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TestStruct()
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{
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s_count++;
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value = 42;
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}
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~TestStruct()
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{
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s_count--;
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value = 0;
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}
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int value;
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static int s_count;
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};
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int TestStruct::s_count = 0;
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/**
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* Test that a shared pointer correctly manages the lifetime of the underlying raw pointer
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*/
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void test_single_sharedptr_lifetime()
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{
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// Sanity-check value of counter
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TEST_ASSERT_EQUAL(0, TestStruct::s_count);
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// Create and destroy shared pointer in given scope
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{
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SharedPtr<TestStruct> s_ptr(new TestStruct);
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TEST_ASSERT_EQUAL(1, TestStruct::s_count);
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}
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// Destroy shared pointer
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TEST_ASSERT_EQUAL(0, TestStruct::s_count);
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}
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/**
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* Test that multiple instances of shared pointers correctly manage the reference count
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* to release the object at the correct point
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*/
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void test_instance_sharing()
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{
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SharedPtr<TestStruct> s_ptr1(NULL);
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// Sanity-check value of counter
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TEST_ASSERT_EQUAL(0, TestStruct::s_count);
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// Create and destroy shared pointer in given scope
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{
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SharedPtr<TestStruct> s_ptr2(new TestStruct);
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TEST_ASSERT_EQUAL(1, TestStruct::s_count);
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s_ptr1 = s_ptr2;
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TEST_ASSERT_EQUAL(1, TestStruct::s_count);
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}
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TEST_ASSERT_EQUAL(1, TestStruct::s_count);
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s_ptr1 = NULL;
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// Destroy shared pointer
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TEST_ASSERT_EQUAL(0, TestStruct::s_count);
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}
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/**
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* Test whether comparison operators operate as expected, both between
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* shared pointers managing the same object,
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* and a shared pointer and underlying raw pointer
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*/
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void test_equality_comparators()
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{
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TestStruct *raw_ptr1 = new TestStruct;
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TestStruct *raw_ptr2 = new TestStruct;
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SharedPtr<TestStruct> s_ptr1_1(raw_ptr1);
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SharedPtr<TestStruct> s_ptr1_2 = s_ptr1_1;
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SharedPtr<TestStruct> s_ptr2(raw_ptr2);
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// Pointers that should be deemed equal
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TEST_ASSERT_TRUE(s_ptr1_1 == raw_ptr1); // Shared pointer / Raw pointer
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TEST_ASSERT_TRUE(s_ptr1_1 == s_ptr1_2); // Shared pointer / Shared pointer
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// Pointers that should be deemed different
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TEST_ASSERT_TRUE(s_ptr1_1 != raw_ptr2); // Shared pointer / Raw pointer
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TEST_ASSERT_TRUE(s_ptr1_1 != s_ptr2); // Shared pointer / Shared pointer
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}
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utest::v1::status_t test_setup(const size_t number_of_cases)
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{
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GREENTEA_SETUP(10, "default_auto");
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return utest::v1::verbose_test_setup_handler(number_of_cases);
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}
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Case cases[] = {
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Case("Test single shared pointer instance", test_single_sharedptr_lifetime),
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Case("Test instance sharing across multiple shared pointers", test_instance_sharing),
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Case("Test equality comparators", test_equality_comparators)
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};
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utest::v1::Specification specification(test_setup, cases);
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int main()
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{
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return !utest::v1::Harness::run(specification);
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}
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