45 lines · cpp
1//===-- Unittests for putc ---------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#include "src/stdio/fclose.h"10#include "src/stdio/ferror.h"11#include "src/stdio/fopen.h"12#include "src/stdio/fread.h"13 14#include "src/stdio/putc.h"15 16#include "test/UnitTest/Test.h"17 18TEST(LlvmLibcPutcTest, WriteToFile) {19 constexpr char FILENAME[] = APPEND_LIBC_TEST("testdata/putc_output.test");20 ::FILE *file = LIBC_NAMESPACE::fopen(FILENAME, "w");21 ASSERT_FALSE(file == nullptr);22 23 constexpr char simple[] = "simple letters";24 for (size_t i = 0; i < sizeof(simple); ++i) {25 ASSERT_EQ(LIBC_NAMESPACE::putc(simple[i], file), 0);26 }27 28 ASSERT_EQ(0, LIBC_NAMESPACE::fclose(file));29 30 file = LIBC_NAMESPACE::fopen(FILENAME, "r");31 ASSERT_FALSE(file == nullptr);32 char data[50];33 34 ASSERT_EQ(LIBC_NAMESPACE::fread(data, 1, sizeof(simple) - 1, file),35 sizeof(simple) - 1);36 data[sizeof(simple) - 1] = '\0';37 38 ASSERT_STREQ(data, simple);39 40 ASSERT_EQ(LIBC_NAMESPACE::ferror(file), 0);41 EXPECT_LT(LIBC_NAMESPACE::putc('L', file), 0);42 43 ASSERT_EQ(LIBC_NAMESPACE::fclose(file), 0);44}45