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Serenity Operating System
1/*
2 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this
9 * list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
22 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include <AK/TestSuite.h>
28
29#include <AK/String.h>
30#include <AK/Optional.h>
31
32TEST_CASE(basic_optional)
33{
34 Optional<int> x;
35 EXPECT_EQ(x.has_value(), false);
36 x = 3;
37 EXPECT_EQ(x.has_value(), true);
38 EXPECT_EQ(x.value(), 3);
39}
40
41TEST_CASE(move_optional)
42{
43 Optional<int> x;
44 EXPECT_EQ(x.has_value(), false);
45 x = 3;
46 EXPECT_EQ(x.has_value(), true);
47 EXPECT_EQ(x.value(), 3);
48
49 Optional<int> y;
50 y = move(x);
51 EXPECT_EQ(y.has_value(), true);
52 EXPECT_EQ(y.value(), 3);
53 EXPECT_EQ(x.has_value(), false);
54}
55
56TEST_CASE(optional_leak_1)
57{
58 struct Structure {
59 Optional<String> str;
60 };
61
62 // This used to leak, it does not anymore.
63 Vector<Structure> vec;
64 vec.append({ "foo" });
65 EXPECT_EQ(vec[0].str.has_value(), true);
66 EXPECT_EQ(vec[0].str.value(), "foo");
67}
68
69TEST_MAIN(Optional)