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 "test/UnitTest/Test.h" 11 12 using namespace __llvm_libc::cpp; 13 14 TEST(LlvmLibcIntegerSequencetTest, Basic) { 15 EXPECT_TRUE( 16 (is_same_v<integer_sequence<int>, make_integer_sequence<int, 0>>)); 17 using ISeq = integer_sequence<int, 0, 1, 2, 3>; 18 EXPECT_TRUE((is_same_v<ISeq, make_integer_sequence<int, 4>>)); 19 using LSeq = integer_sequence<long, 0, 1, 2, 3>; 20 EXPECT_TRUE((is_same_v<LSeq, make_integer_sequence<long, 4>>)); 21 using ULLSeq = integer_sequence<unsigned long long, 0ull, 1ull, 2ull, 3ull>; 22 EXPECT_TRUE( 23 (is_same_v<ULLSeq, make_integer_sequence<unsigned long long, 4>>)); 24 } 25 26 template <typename T, T... Ts> bool checkArray(integer_sequence<T, Ts...> seq) { 27 T arr[sizeof...(Ts)]{Ts...}; 28 29 for (T i = 0; i < static_cast<T>(sizeof...(Ts)); i++) 30 if (arr[i] != i) 31 return false; 32 33 return true; 34 } 35 36 TEST(LlvmLibcIntegerSequencetTest, Many) { 37 EXPECT_TRUE(checkArray(make_integer_sequence<int, 100>{})); 38 } 39