| //===-- Unittests for fgetc -----------------------------------------------===// |
| // |
| // 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/stdio/clearerr.h" |
| #include "src/stdio/fclose.h" |
| #include "src/stdio/feof.h" |
| #include "src/stdio/ferror.h" |
| #include "src/stdio/fgetc.h" |
| #include "src/stdio/fopen.h" |
| #include "src/stdio/fwrite.h" |
| #include "src/stdio/getc.h" |
| #include "test/UnitTest/Test.h" |
| |
| #include "src/errno/libc_errno.h" |
| #include <stdio.h> |
| |
| class LlvmLibcGetcTest : public LIBC_NAMESPACE::testing::Test { |
| public: |
| using GetcFunc = int(FILE *); |
| void test_with_func(GetcFunc *func, const char *filename) { |
| ::FILE *file = LIBC_NAMESPACE::fopen(filename, "w"); |
| ASSERT_FALSE(file == nullptr); |
| constexpr char CONTENT[] = "123456789"; |
| constexpr size_t WRITE_SIZE = sizeof(CONTENT) - 1; |
| ASSERT_EQ(WRITE_SIZE, LIBC_NAMESPACE::fwrite(CONTENT, 1, WRITE_SIZE, file)); |
| // This is a write-only file so reads should fail. |
| ASSERT_EQ(func(file), EOF); |
| // This is an error and not a real EOF. |
| ASSERT_EQ(LIBC_NAMESPACE::feof(file), 0); |
| ASSERT_NE(LIBC_NAMESPACE::ferror(file), 0); |
| LIBC_NAMESPACE::libc_errno = 0; |
| |
| ASSERT_EQ(0, LIBC_NAMESPACE::fclose(file)); |
| |
| file = LIBC_NAMESPACE::fopen(filename, "r"); |
| ASSERT_FALSE(file == nullptr); |
| |
| for (size_t i = 0; i < WRITE_SIZE; ++i) { |
| int c = func(file); |
| ASSERT_EQ(c, int('1' + i)); |
| } |
| // Reading more should return EOF but not set error. |
| ASSERT_EQ(func(file), EOF); |
| ASSERT_NE(LIBC_NAMESPACE::feof(file), 0); |
| ASSERT_EQ(LIBC_NAMESPACE::ferror(file), 0); |
| |
| ASSERT_EQ(0, LIBC_NAMESPACE::fclose(file)); |
| } |
| }; |
| |
| TEST_F(LlvmLibcGetcTest, WriteAndReadCharactersWithFgetc) { |
| test_with_func(&LIBC_NAMESPACE::fgetc, "testdata/fgetc.test"); |
| } |
| |
| TEST_F(LlvmLibcGetcTest, WriteAndReadCharactersWithGetc) { |
| test_with_func(&LIBC_NAMESPACE::getc, "testdata/getc.test"); |
| } |