| //===-- Unittests for fopen / fclose --------------------------------------===// |
| // |
| // 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/__support/File/file.h" |
| #include "src/stdio/fclose.h" |
| #include "src/stdio/fopen.h" |
| #include "src/stdio/fwrite.h" |
| #include "src/stdio/fread.h" |
| |
| #include "test/UnitTest/Test.h" |
| |
| TEST(LlvmLibcFOpenTest, PrintToFile) { |
| int result; |
| |
| FILE *file = LIBC_NAMESPACE::fopen("./testdata/test_data.txt", "w"); |
| ASSERT_FALSE(file == nullptr); |
| |
| static constexpr char STRING[] = "A simple string written to a file\n"; |
| result = LIBC_NAMESPACE::fwrite(STRING, 1, sizeof(STRING) - 1, file); |
| EXPECT_GE(result, 0); |
| |
| ASSERT_EQ(0, LIBC_NAMESPACE::fclose(file)); |
| |
| FILE *new_file = LIBC_NAMESPACE::fopen("./testdata/test_data.txt", "r"); |
| ASSERT_FALSE(new_file == nullptr); |
| |
| static char data[64] = {0}; |
| ASSERT_EQ(LIBC_NAMESPACE::fread(data, 1, sizeof(STRING) - 1, new_file), |
| sizeof(STRING) - 1); |
| data[sizeof(STRING) - 1] = '\0'; |
| ASSERT_STREQ(data, STRING); |
| |
| ASSERT_EQ(0, LIBC_NAMESPACE::fclose(new_file)); |
| } |