jcs.org
Serenity Operating System
1/*
2 * Copyright (c) 2021, the SerenityOS developers.
3 *
4 * SPDX-License-Identifier: BSD-2-Clause
5 */
6
7#include <LibTest/TestCase.h>
8
9#include <AK/AnyOf.h>
10#include <AK/Array.h>
11#include <AK/Vector.h>
12
13TEST_CASE(should_determine_if_predicate_applies_to_any_element_in_container)
14{
15 constexpr Array<int, 10> a { 1 };
16
17 static_assert(any_of(a.begin(), a.end(), [](auto elem) { return elem == 0; }));
18 static_assert(any_of(a.begin(), a.end(), [](auto elem) { return elem == 1; }));
19 static_assert(!any_of(a.begin(), a.end(), [](auto elem) { return elem == 2; }));
20
21 EXPECT(any_of(a.begin(), a.end(), [](auto elem) { return elem == 0; }));
22 EXPECT(any_of(a.begin(), a.end(), [](auto elem) { return elem == 1; }));
23 EXPECT(!any_of(a.begin(), a.end(), [](auto elem) { return elem == 2; }));
24}
25
26TEST_CASE(container_form)
27{
28 constexpr Array a { 10, 20, 30 };
29 static_assert(any_of(a, [](auto elem) { return elem == 10; }));
30 static_assert(any_of(a, [](auto elem) { return elem == 20; }));
31 static_assert(!any_of(a, [](auto elem) { return elem == 40; }));
32
33 EXPECT(any_of(a, [](auto elem) { return elem == 10; }));
34 EXPECT(any_of(a, [](auto elem) { return elem == 20; }));
35 EXPECT(!any_of(a, [](auto elem) { return elem == 40; }));
36
37 Vector b { 10, 20, 30 };
38 EXPECT(any_of(b, [](auto elem) { return elem > 10; }));
39 EXPECT(!any_of(b, [](auto elem) { return elem > 40; }));
40
41 struct ArbitraryIterable {
42 struct ArbitraryIterator {
43 ArbitraryIterator(int v)
44 : value(v)
45 {
46 }
47
48 bool operator==(ArbitraryIterator const&) const = default;
49 int operator*() const { return value; }
50 ArbitraryIterator& operator++()
51 {
52 ++value;
53 return *this;
54 }
55
56 int value;
57 };
58 ArbitraryIterator begin() const { return 0; }
59 ArbitraryIterator end() const { return 20; }
60 };
61
62 ArbitraryIterable c;
63 EXPECT(any_of(c, [](auto elem) { return elem < 20; }));
64 EXPECT(!any_of(c, [](auto elem) { return elem > 31; }));
65}