| //===-- Unittests for strcasecmp ------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "src/string/strcasecmp.h" |
| #include "test/UnitTest/Test.h" |
| |
| TEST(LlvmLibcStrCaseCmpTest, EmptyStringsShouldReturnZero) { |
| const char *s1 = ""; |
| const char *s2 = ""; |
| int result = LIBC_NAMESPACE::strcasecmp(s1, s2); |
| ASSERT_EQ(result, 0); |
| |
| // Verify operands reversed. |
| result = LIBC_NAMESPACE::strcasecmp(s2, s1); |
| ASSERT_EQ(result, 0); |
| } |
| |
| TEST(LlvmLibcStrCaseCmpTest, EmptyStringShouldNotEqualNonEmptyString) { |
| const char *empty = ""; |
| const char *s2 = "abc"; |
| int result = LIBC_NAMESPACE::strcasecmp(empty, s2); |
| // This should be '\0' - 'a' = -97 |
| ASSERT_LT(result, 0); |
| |
| // Similar case if empty string is second argument. |
| const char *s3 = "123"; |
| result = LIBC_NAMESPACE::strcasecmp(s3, empty); |
| // This should be '1' - '\0' = 49 |
| ASSERT_GT(result, 0); |
| } |
| |
| TEST(LlvmLibcStrCaseCmpTest, Case) { |
| const char *s1 = "aB"; |
| const char *s2 = "ab"; |
| int result = LIBC_NAMESPACE::strcasecmp(s1, s2); |
| ASSERT_EQ(result, 0); |
| |
| // Verify operands reversed. |
| result = LIBC_NAMESPACE::strcasecmp(s2, s1); |
| ASSERT_EQ(result, 0); |
| } |