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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibTest/TestCase.h>
#include <AK/Optional.h>
#include <AK/String.h>
TEST_CASE(basic_optional)
{
Optional<int> x;
EXPECT_EQ(x.has_value(), false);
x = 3;
EXPECT_EQ(x.has_value(), true);
EXPECT_EQ(x.value(), 3);
}
TEST_CASE(move_optional)
{
Optional<int> x;
EXPECT_EQ(x.has_value(), false);
x = 3;
EXPECT_EQ(x.has_value(), true);
EXPECT_EQ(x.value(), 3);
Optional<int> y;
y = move(x);
EXPECT_EQ(y.has_value(), true);
EXPECT_EQ(y.value(), 3);
EXPECT_EQ(x.has_value(), false);
}
TEST_CASE(optional_leak_1)
{
struct Structure {
Optional<String> str;
};
// This used to leak, it does not anymore.
Vector<Structure> vec;
vec.append({ "foo" });
EXPECT_EQ(vec[0].str.has_value(), true);
EXPECT_EQ(vec[0].str.value(), "foo");
}
TEST_CASE(short_notation)
{
Optional<StringView> value = "foo";
EXPECT_EQ(value->length(), 3u);
EXPECT_EQ(*value, "foo");
}
TEST_CASE(comparison_without_values)
{
Optional<StringView> opt0;
Optional<StringView> opt1;
Optional<String> opt2;
EXPECT_EQ(opt0, opt1);
EXPECT_EQ(opt0, opt2);
}
TEST_CASE(comparison_with_values)
{
Optional<StringView> opt0;
Optional<StringView> opt1 = "foo";
Optional<String> opt2 = "foo";
Optional<StringView> opt3 = "bar";
EXPECT_NE(opt0, opt1);
EXPECT_EQ(opt1, opt2);
EXPECT_NE(opt1, opt3);
}
TEST_CASE(comparison_to_underlying_types)
{
Optional<String> opt0;
EXPECT_NE(opt0, String());
EXPECT_NE(opt0, "foo");
Optional<StringView> opt1 = "foo";
EXPECT_EQ(opt1, "foo");
EXPECT_NE(opt1, "bar");
EXPECT_EQ(opt1, String("foo"));
}
TEST_CASE(comparison_with_numeric_types)
{
Optional<u8> opt0;
EXPECT_NE(opt0, 0);
Optional<u8> opt1 = 7;
EXPECT_EQ(opt1, 7);
EXPECT_EQ(opt1, 7.0);
EXPECT_EQ(opt1, 7u);
EXPECT_NE(opt1, -2);
}
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