64 lines
1.6 KiB
C++
64 lines
1.6 KiB
C++
/*
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* Copyright 2017 The Cartographer Authors
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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 "cartographer/common/optional.h"
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#include "gtest/gtest.h"
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namespace cartographer {
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namespace common {
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namespace {
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TEST(OptionalTest, CreateDisengagedObject) {
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const optional<int> o;
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EXPECT_FALSE(o.has_value());
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const optional<float> x;
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EXPECT_FALSE(x.has_value());
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}
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TEST(OptionalTest, CreateWithValue) {
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const optional<int> a(5);
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EXPECT_TRUE(a.has_value());
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EXPECT_EQ(5, a.value());
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}
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TEST(OptionalTest, CreateFromOtherOptional) {
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const optional<int> a(5);
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const optional<int> b = a;
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EXPECT_TRUE(a.has_value());
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EXPECT_TRUE(b.has_value());
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EXPECT_EQ(5, a.value());
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EXPECT_EQ(5, b.value());
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}
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TEST(OptionalTest, AssignmentOperator) {
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optional<int> a(5);
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optional<int> b(4);
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optional<int> c;
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a = b;
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EXPECT_TRUE(a.has_value());
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EXPECT_EQ(4, a.value());
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a = c;
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EXPECT_FALSE(a.has_value());
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a = 3;
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EXPECT_TRUE(a.has_value());
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EXPECT_EQ(3, a.value());
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}
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} // namespace
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} // namespace common
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} // namespace cartographer
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