1 //===-- Unittests for IntegerSequence -------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 #include "src/__support/CPP/Utility.h"
10 #include "utils/UnitTest/Test.h"
11
12 using namespace __llvm_libc::cpp;
13
TEST(LlvmLibcIntegerSequencetTest,Basic)14 TEST(LlvmLibcIntegerSequencetTest, Basic) {
15 EXPECT_TRUE((IsSameV<IntegerSequence<int>, MakeIntegerSequence<int, 0>>));
16 using ISeq = IntegerSequence<int, 0, 1, 2, 3>;
17 EXPECT_TRUE((IsSameV<ISeq, MakeIntegerSequence<int, 4>>));
18 using LSeq = IntegerSequence<long, 0, 1, 2, 3>;
19 EXPECT_TRUE((IsSameV<LSeq, MakeIntegerSequence<long, 4>>));
20 using ULLSeq = IntegerSequence<unsigned long long, 0ull, 1ull, 2ull, 3ull>;
21 EXPECT_TRUE((IsSameV<ULLSeq, MakeIntegerSequence<unsigned long long, 4>>));
22 }
23
24 template <typename T, T... Ts>
checkArray(IntegerSequence<T,Ts...> seq)25 bool checkArray(IntegerSequence<T, Ts...> seq) {
26 T arr[sizeof...(Ts)]{Ts...};
27
28 for (T i = 0; i < static_cast<T>(sizeof...(Ts)); i++)
29 if (arr[i] != i)
30 return false;
31
32 return true;
33 }
34
TEST(LlvmLibcIntegerSequencetTest,Many)35 TEST(LlvmLibcIntegerSequencetTest, Many) {
36 EXPECT_TRUE(checkArray(MakeIntegerSequence<int, 100>{}));
37 }
38