1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
|
//===----------------------------------------------------------------------===//
// 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
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
// UNSUPPORTED: no-filesystem
// UNSUPPORTED: libcpp-has-no-unicode
// UNSUPPORTED: GCC-ALWAYS_INLINE-FIXME
// TODO PRINT Enable again
// https://reviews.llvm.org/D150044
// https://lab.llvm.org/buildbot/#/builders/237/builds/3578
// UNSUPPORTED: asan, hwasan, msan
// XFAIL: availability-fp_to_chars-missing
// The error exception has no system error string.
// XFAIL: LIBCXX-ANDROID-FIXME
// <print>
// void vprint_unicode(FILE* stream, string_view fmt, format_args args);
// In the library when the stdout is redirected to a file it is no
// longer considered a terminal and the special terminal handling is no
// longer executed. There are tests in
// libcxx/test/libcxx/input.output/iostream.format/print.fun/
// to validate that behaviour
#include <algorithm>
#include <array>
#include <cassert>
#include <cstddef>
#include <cstdio>
#include <fstream>
#include <iterator>
#include <print>
#include <string_view>
#include "assert_macros.h"
#include "concat_macros.h"
#include "filesystem_test_helper.h"
#include "print_tests.h"
#include "test_macros.h"
scoped_test_env env;
std::string filename = env.create_file("output.txt");
auto test_file = []<class... Args>(std::string_view expected, std::string_view fmt, Args&&... args) {
FILE* file = fopen(filename.c_str(), "wb");
assert(file);
std::vprint_unicode(file, fmt, std::make_format_args(args...));
std::fclose(file);
std::ifstream stream{filename.c_str(), std::ios_base::in | std::ios_base::binary};
std::string out(std::istreambuf_iterator<char>{stream}, {});
TEST_REQUIRE(out == expected,
TEST_WRITE_CONCATENATED(
"\nFormat string ", fmt, "\nExpected output ", expected, "\nActual output ", out, '\n'));
};
auto test_exception = []<class... Args>([[maybe_unused]] std::string_view what,
[[maybe_unused]] std::string_view fmt,
[[maybe_unused]] Args&&... args) {
FILE* file = fopen(filename.c_str(), "wb");
assert(file);
TEST_VALIDATE_EXCEPTION(
std::format_error,
[&]([[maybe_unused]] const std::format_error& e) {
TEST_LIBCPP_REQUIRE(
e.what() == what,
TEST_WRITE_CONCATENATED(
"\nFormat string ", fmt, "\nExpected exception ", what, "\nActual exception ", e.what(), '\n'));
},
std::vprint_unicode(file, fmt, std::make_format_args(args...)));
fclose(file);
};
// Glibc fails writing to a wide stream.
#if defined(TEST_HAS_GLIBC) && !defined(TEST_HAS_NO_WIDE_CHARACTERS)
static void test_wide_stream() {
FILE* file = fopen(filename.c_str(), "wb");
assert(file);
int mode = std::fwide(file, 1);
assert(mode > 0);
TEST_VALIDATE_EXCEPTION(
std::system_error,
[&]([[maybe_unused]] const std::system_error& e) {
[[maybe_unused]] std::string_view what{"failed to write formatted output"};
TEST_LIBCPP_REQUIRE(
e.what() == what,
TEST_WRITE_CONCATENATED("\nExpected exception ", what, "\nActual exception ", e.what(), '\n'));
},
std::vprint_unicode(file, "hello", std::make_format_args()));
}
#endif // defined(TEST_HAS_GLIBC) && !defined(TEST_HAS_NO_WIDE_CHARACTERS)
static void test_read_only() {
FILE* file = fopen(filename.c_str(), "r");
assert(file);
TEST_VALIDATE_EXCEPTION(
std::system_error,
[&]([[maybe_unused]] const std::system_error& e) {
[[maybe_unused]] std::string_view what{
"failed to write formatted output: " TEST_IF_AIX("Broken pipe", "Operation not permitted")};
TEST_LIBCPP_REQUIRE(
e.what() == what,
TEST_WRITE_CONCATENATED("\nExpected exception ", what, "\nActual exception ", e.what(), '\n'));
},
std::vprint_unicode(file, "hello", std::make_format_args()));
}
static void test_new_line() {
// Text does newline translation.
{
FILE* file = fopen(filename.c_str(), "w");
assert(file);
std::vprint_unicode(file, "\n", std::make_format_args());
#ifndef _WIN32
assert(std::ftell(file) == 1);
#else
assert(std::ftell(file) == 2);
#endif
}
// Binary no newline translation.
{
FILE* file = fopen(filename.c_str(), "wb");
assert(file);
std::vprint_unicode(file, "\n", std::make_format_args());
assert(std::ftell(file) == 1);
}
}
int main(int, char**) {
print_tests(test_file, test_exception);
#if defined(TEST_HAS_GLIBC) && !defined(TEST_HAS_NO_WIDE_CHARACTERS)
test_wide_stream();
#endif
test_read_only();
test_new_line();
return 0;
}
|
