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-exception |
6 | // |
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 | |
18 | TEST(LlvmLibcPutcTest, WriteToFile) { |
19 | constexpr char FILENAME[] = "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 | |