66 lines
2.3 KiB
C++
66 lines
2.3 KiB
C++
//===-- Unittests for fgetc -----------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "src/stdio/clearerr.h"
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#include "src/stdio/fclose.h"
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#include "src/stdio/feof.h"
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#include "src/stdio/ferror.h"
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#include "src/stdio/fgetc.h"
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#include "src/stdio/fopen.h"
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#include "src/stdio/fwrite.h"
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#include "src/stdio/getc.h"
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#include "test/UnitTest/ErrnoCheckingTest.h"
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#include "test/UnitTest/ErrnoSetterMatcher.h"
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#include "test/UnitTest/Test.h"
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#include "hdr/stdio_macros.h"
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using namespace LIBC_NAMESPACE::testing::ErrnoSetterMatcher;
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class LlvmLibcGetcTest : public LIBC_NAMESPACE::testing::ErrnoCheckingTest {
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public:
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using GetcFunc = int(FILE *);
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void test_with_func(GetcFunc *func, const char *filename) {
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::FILE *file = LIBC_NAMESPACE::fopen(filename, "w");
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ASSERT_FALSE(file == nullptr);
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constexpr char CONTENT[] = "123456789";
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constexpr size_t WRITE_SIZE = sizeof(CONTENT) - 1;
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ASSERT_THAT(LIBC_NAMESPACE::fwrite(CONTENT, 1, WRITE_SIZE, file),
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Succeeds(WRITE_SIZE));
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// This is a write-only file so reads should fail.
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ASSERT_THAT(func(file), Fails(EBADF, EOF));
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// This is an error and not a real EOF.
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ASSERT_EQ(LIBC_NAMESPACE::feof(file), 0);
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ASSERT_NE(LIBC_NAMESPACE::ferror(file), 0);
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ASSERT_THAT(LIBC_NAMESPACE::fclose(file), Succeeds());
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file = LIBC_NAMESPACE::fopen(filename, "r");
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ASSERT_FALSE(file == nullptr);
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for (size_t i = 0; i < WRITE_SIZE; ++i) {
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ASSERT_THAT(func(file), Succeeds(int('1' + i)));
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}
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// Reading more should return EOF but not set error.
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ASSERT_THAT(func(file), Succeeds(EOF));
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ASSERT_NE(LIBC_NAMESPACE::feof(file), 0);
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ASSERT_EQ(LIBC_NAMESPACE::ferror(file), 0);
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ASSERT_THAT(LIBC_NAMESPACE::fclose(file), Succeeds());
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}
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};
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TEST_F(LlvmLibcGetcTest, WriteAndReadCharactersWithFgetc) {
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test_with_func(&LIBC_NAMESPACE::fgetc,
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APPEND_LIBC_TEST("testdata/fgetc.test"));
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}
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TEST_F(LlvmLibcGetcTest, WriteAndReadCharactersWithGetc) {
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test_with_func(&LIBC_NAMESPACE::getc, APPEND_LIBC_TEST("testdata/getc.test"));
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}
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