| 1 | //===-- Unittests for IntegerSequence -------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "src/__support/CPP/utility.h" |
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| 10 | #include "test/UnitTest/Test.h" |
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| 11 | |
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| 12 | using namespace LIBC_NAMESPACE::cpp; |
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| 13 | |
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| 14 | TEST(LlvmLibcIntegerSequencetTest, Basic) { |
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| 15 | EXPECT_TRUE( |
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| 16 | (is_same_v<integer_sequence<int>, make_integer_sequence<int, 0>>)); |
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| 17 | using ISeq = integer_sequence<int, 0, 1, 2, 3>; |
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| 18 | EXPECT_TRUE((is_same_v<ISeq, make_integer_sequence<int, 4>>)); |
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| 19 | using LSeq = integer_sequence<long, 0, 1, 2, 3>; |
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| 20 | EXPECT_TRUE((is_same_v<LSeq, make_integer_sequence<long, 4>>)); |
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| 21 | using ULLSeq = integer_sequence<unsigned long long, 0ull, 1ull, 2ull, 3ull>; |
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| 22 | EXPECT_TRUE( |
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| 23 | (is_same_v<ULLSeq, make_integer_sequence<unsigned long long, 4>>)); |
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| 24 | } |
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| 25 | |
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| 26 | template <typename T, T... Ts> bool checkArray(integer_sequence<T, Ts...> seq) { |
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| 27 | T arr[sizeof...(Ts)]{Ts...}; |
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| 28 | |
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| 29 | for (T i = 0; i < static_cast<T>(sizeof...(Ts)); i++) |
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| 30 | if (arr[i] != i) |
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| 31 | return false; |
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| 32 | |
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| 33 | return true; |
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| 34 | } |
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| 35 | |
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| 36 | TEST(LlvmLibcIntegerSequencetTest, Many) { |
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| 37 | EXPECT_TRUE(checkArray(make_integer_sequence<int, 100>{})); |
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| 38 | } |
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| 39 | |
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