120 lines
2.6 KiB
C++
120 lines
2.6 KiB
C++
#include <gtest/gtest.h>
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#include "utils/optional.hpp"
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using namespace cpptrace::detail;
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TEST(OptionalTest, DefaultConstructor) {
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optional<int> o;
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EXPECT_FALSE(o.has_value());
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EXPECT_FALSE(static_cast<bool>(o));
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}
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TEST(OptionalTest, ConstructWithNullopt) {
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optional<int> o(nullopt);
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EXPECT_FALSE(o.has_value());
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}
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TEST(OptionalTest, ValueConstructor) {
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optional<int> o(42);
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EXPECT_TRUE(o.has_value());
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EXPECT_EQ(o.unwrap(), 42);
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int x = 100;
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optional<int> o2(x);
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EXPECT_TRUE(o2.has_value());
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EXPECT_EQ(o2.unwrap(), 100);
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}
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TEST(OptionalTest, CopyConstructor) {
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optional<int> o1(42);
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optional<int> o2(o1);
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EXPECT_TRUE(o2.has_value());
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EXPECT_EQ(o2.unwrap(), 42);
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optional<int> o3(nullopt);
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optional<int> o4(o3);
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EXPECT_FALSE(o4.has_value());
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}
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TEST(OptionalTest, MoveConstructor) {
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optional<int> o1(42);
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optional<int> o2(std::move(o1));
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EXPECT_TRUE(o2.has_value());
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EXPECT_EQ(o2.unwrap(), 42);
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optional<int> o3(nullopt);
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optional<int> o4(std::move(o3));
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EXPECT_FALSE(o4.has_value());
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}
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TEST(OptionalTest, CopyAssignmentOperator) {
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optional<int> o1(42);
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optional<int> o2;
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o2 = o1;
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EXPECT_TRUE(o2.has_value());
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EXPECT_EQ(o2.unwrap(), 42);
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optional<int> o3(nullopt);
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optional<int> o4(100);
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o4 = o3;
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EXPECT_FALSE(o4.has_value());
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}
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TEST(OptionalTest, MoveAssignmentOperator) {
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optional<int> o1(42);
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optional<int> o2;
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o2 = std::move(o1);
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EXPECT_TRUE(o2.has_value());
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EXPECT_EQ(o2.unwrap(), 42);
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optional<int> o3(nullopt);
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optional<int> o4(99);
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o4 = std::move(o3);
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EXPECT_FALSE(o4.has_value());
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}
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TEST(OptionalTest, AssignmentFromValue) {
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optional<int> o;
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o = 123;
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EXPECT_TRUE(o.has_value());
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EXPECT_EQ(o.unwrap(), 123);
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o = nullopt;
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EXPECT_FALSE(o.has_value());
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}
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TEST(OptionalTest, Reset) {
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optional<int> o(42);
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EXPECT_TRUE(o.has_value());
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o.reset();
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EXPECT_FALSE(o.has_value());
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}
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TEST(OptionalTest, Swap) {
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optional<int> o1(42);
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optional<int> o2(100);
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o1.swap(o2);
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EXPECT_TRUE(o1.has_value());
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EXPECT_TRUE(o2.has_value());
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EXPECT_EQ(o1.unwrap(), 100);
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EXPECT_EQ(o2.unwrap(), 42);
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// Swap a value-holding optional with an empty optional
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optional<int> o3(7);
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optional<int> o4(nullopt);
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o3.swap(o4);
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EXPECT_FALSE(o3.has_value());
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EXPECT_TRUE(o4.has_value());
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EXPECT_EQ(o4.unwrap(), 7);
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}
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TEST(OptionalTest, ValueOr) {
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optional<int> o1(42);
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EXPECT_EQ(o1.value_or(100), 42);
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optional<int> o2(nullopt);
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EXPECT_EQ(o2.value_or(100), 100);
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}
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