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Serenity Operating System
1/*
2 * Copyright (c) 2020, the SerenityOS developers.
3 *
4 * SPDX-License-Identifier: BSD-2-Clause
5 */
6
7#include <LibTest/TestCase.h>
8
9#include <AK/StdLibExtras.h>
10#include <AK/TypeList.h>
11#include <AK/Vector.h>
12
13template<typename F, typename... Args>
14F for_each_argument(F f, Args&&... args)
15{
16 (f(forward<Args>(args)), ...);
17 return f;
18}
19
20template<typename T, T... ints>
21void verify_sequence(IntegerSequence<T, ints...> seq, std::initializer_list<T> expected)
22{
23 EXPECT_EQ(seq.size(), expected.size());
24 for_each_argument([idx = expected.begin()](T t) mutable { EXPECT_EQ(t, *(idx++)); }, ints...);
25}
26
27TEST_CASE(TestIndexSequence)
28{
29 constexpr auto integer_seq1 = IntegerSequence<int, 0, 1, 2, 3, 4> {};
30 constexpr auto integer_seq2 = MakeIntegerSequence<int, 5> {};
31 static_assert(IsSame<decltype(integer_seq1), decltype(integer_seq2)>, "");
32
33 static_assert(integer_seq1.size() == 5, "");
34 static_assert(integer_seq2.size() == 5, "");
35
36 constexpr auto index_seq1 = IndexSequence<0, 1, 2> {};
37 constexpr auto index_seq2 = MakeIndexSequence<3> {};
38 static_assert(IsSame<decltype(index_seq1), decltype(index_seq2)>, "");
39
40 verify_sequence(MakeIndexSequence<10> {}, std::initializer_list<unsigned> { 0U, 1U, 2U, 3U, 4U, 5U, 6U, 7U, 8U, 9U });
41 verify_sequence(MakeIntegerSequence<long, 16> {}, std::initializer_list<long> { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 });
42}
43
44TEST_CASE(TypeList)
45{
46 using MyTypes = TypeList<int, bool, char>;
47 static_assert(IsSame<MyTypes::Type<0>, int>, "");
48 static_assert(IsSame<MyTypes::Type<1>, bool>, "");
49 static_assert(IsSame<MyTypes::Type<2>, char>, "");
50}