| 1 | //===-- Unittests for isalpha----------------------------------------------===// |
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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/ctype/isalpha.h" |
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| 10 | |
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| 11 | #include "test/UnitTest/Test.h" |
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| 12 | |
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| 13 | TEST(LlvmLibcIsAlpha, DefaultLocale) { |
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| 14 | // Loops through all characters, verifying that letters return a |
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| 15 | // non-zero integer and everything else returns zero. |
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| 16 | for (int ch = -255; ch < 255; ++ch) { |
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| 17 | if (('a' <= ch && ch <= 'z') || ('A' <= ch && ch <= 'Z')) |
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| 18 | EXPECT_NE(LIBC_NAMESPACE::isalpha(ch), 0); |
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| 19 | else |
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| 20 | EXPECT_EQ(LIBC_NAMESPACE::isalpha(ch), 0); |
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| 21 | } |
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| 22 | } |
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| 23 | |
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