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comparison dep/fmt/test/gtest-extra-test.cc @ 343:1faa72660932

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*: transfer back to cmake from autotools autotools just made lots of things more complicated than they should have and many things broke (i.e. translations)
author Paper <paper@paper.us.eu.org>
date Thu, 20 Jun 2024 05:56:06 -0400
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342:adb79bdde329 343:1faa72660932
1 // Formatting library for C++ - tests of custom Google Test assertions
2 //
3 // Copyright (c) 2012 - present, Victor Zverovich
4 // All rights reserved.
5 //
6 // For the license information refer to format.h.
7
8 #include "gtest-extra.h"
9
10 #include <gtest/gtest-spi.h>
11
12 #include <cstring>
13 #include <memory>
14 #include <stdexcept>
15
16 #include "fmt/os.h"
17 #include "util.h"
18
19 // Tests that assertion macros evaluate their arguments exactly once.
20 namespace {
21 class single_evaluation_test : public ::testing::Test {
22 protected:
23 single_evaluation_test() {
24 p_ = s_;
25 a_ = 0;
26 b_ = 0;
27 }
28
29 static const char* const s_;
30 static const char* p_;
31
32 static int a_;
33 static int b_;
34 };
35 } // namespace
36
37 const char* const single_evaluation_test::s_ = "01234";
38 const char* single_evaluation_test::p_;
39 int single_evaluation_test::a_;
40 int single_evaluation_test::b_;
41
42 void do_nothing() {}
43
44 FMT_NORETURN void throw_exception() { throw std::runtime_error("test"); }
45
46 FMT_NORETURN void throw_system_error() {
47 throw fmt::system_error(EDOM, "test");
48 }
49
50 // Tests that when EXPECT_THROW_MSG fails, it evaluates its message argument
51 // exactly once.
52 TEST_F(single_evaluation_test, failed_expect_throw_msg) {
53 EXPECT_NONFATAL_FAILURE(
54 EXPECT_THROW_MSG(throw_exception(), std::exception, p_++), "01234");
55 EXPECT_EQ(s_ + 1, p_);
56 }
57
58 // Tests that when EXPECT_SYSTEM_ERROR fails, it evaluates its message argument
59 // exactly once.
60 TEST_F(single_evaluation_test, failed_expect_system_error) {
61 EXPECT_NONFATAL_FAILURE(EXPECT_SYSTEM_ERROR(throw_system_error(), EDOM, p_++),
62 "01234");
63 EXPECT_EQ(s_ + 1, p_);
64 }
65
66 // Tests that assertion arguments are evaluated exactly once.
67 TEST_F(single_evaluation_test, exception_tests) {
68 // successful EXPECT_THROW_MSG
69 EXPECT_THROW_MSG(
70 { // NOLINT
71 a_++;
72 throw_exception();
73 },
74 std::exception, (b_++, "test"));
75 EXPECT_EQ(1, a_);
76 EXPECT_EQ(1, b_);
77
78 // failed EXPECT_THROW_MSG, throws different type
79 EXPECT_NONFATAL_FAILURE(EXPECT_THROW_MSG(
80 { // NOLINT
81 a_++;
82 throw_exception();
83 },
84 std::logic_error, (b_++, "test")),
85 "throws a different type");
86 EXPECT_EQ(2, a_);
87 EXPECT_EQ(2, b_);
88
89 // failed EXPECT_THROW_MSG, throws an exception with different message
90 EXPECT_NONFATAL_FAILURE(EXPECT_THROW_MSG(
91 { // NOLINT
92 a_++;
93 throw_exception();
94 },
95 std::exception, (b_++, "other")),
96 "throws an exception with a different message");
97 EXPECT_EQ(3, a_);
98 EXPECT_EQ(3, b_);
99
100 // failed EXPECT_THROW_MSG, throws nothing
101 EXPECT_NONFATAL_FAILURE(
102 EXPECT_THROW_MSG(a_++, std::exception, (b_++, "test")), "throws nothing");
103 EXPECT_EQ(4, a_);
104 EXPECT_EQ(4, b_);
105 }
106
107 TEST_F(single_evaluation_test, system_error_tests) {
108 // successful EXPECT_SYSTEM_ERROR
109 EXPECT_SYSTEM_ERROR(
110 { // NOLINT
111 a_++;
112 throw_system_error();
113 },
114 EDOM, (b_++, "test"));
115 EXPECT_EQ(1, a_);
116 EXPECT_EQ(1, b_);
117
118 // failed EXPECT_SYSTEM_ERROR, throws different type
119 EXPECT_NONFATAL_FAILURE(EXPECT_SYSTEM_ERROR(
120 { // NOLINT
121 a_++;
122 throw_exception();
123 },
124 EDOM, (b_++, "test")),
125 "throws a different type");
126 EXPECT_EQ(2, a_);
127 EXPECT_EQ(2, b_);
128
129 // failed EXPECT_SYSTEM_ERROR, throws an exception with different message
130 EXPECT_NONFATAL_FAILURE(EXPECT_SYSTEM_ERROR(
131 { // NOLINT
132 a_++;
133 throw_system_error();
134 },
135 EDOM, (b_++, "other")),
136 "throws an exception with a different message");
137 EXPECT_EQ(3, a_);
138 EXPECT_EQ(3, b_);
139
140 // failed EXPECT_SYSTEM_ERROR, throws nothing
141 EXPECT_NONFATAL_FAILURE(EXPECT_SYSTEM_ERROR(a_++, EDOM, (b_++, "test")),
142 "throws nothing");
143 EXPECT_EQ(4, a_);
144 EXPECT_EQ(4, b_);
145 }
146
147 #if FMT_USE_FCNTL
148 // Tests that when EXPECT_WRITE fails, it evaluates its message argument
149 // exactly once.
150 TEST_F(single_evaluation_test, failed_expect_write) {
151 EXPECT_NONFATAL_FAILURE(EXPECT_WRITE(stdout, std::printf("test"), p_++),
152 "01234");
153 EXPECT_EQ(s_ + 1, p_);
154 }
155
156 // Tests that assertion arguments are evaluated exactly once.
157 TEST_F(single_evaluation_test, write_tests) {
158 // successful EXPECT_WRITE
159 EXPECT_WRITE(
160 stdout,
161 { // NOLINT
162 a_++;
163 std::printf("test");
164 },
165 (b_++, "test"));
166 EXPECT_EQ(1, a_);
167 EXPECT_EQ(1, b_);
168
169 // failed EXPECT_WRITE
170 EXPECT_NONFATAL_FAILURE(EXPECT_WRITE(
171 stdout,
172 { // NOLINT
173 a_++;
174 std::printf("test");
175 },
176 (b_++, "other")),
177 "Actual: test");
178 EXPECT_EQ(2, a_);
179 EXPECT_EQ(2, b_);
180 }
181
182 // Tests EXPECT_WRITE.
183 TEST(gtest_extra_test, expect_write) {
184 EXPECT_WRITE(stdout, do_nothing(), "");
185 EXPECT_WRITE(stdout, std::printf("test"), "test");
186 EXPECT_WRITE(stderr, std::fprintf(stderr, "test"), "test");
187 EXPECT_NONFATAL_FAILURE(EXPECT_WRITE(stdout, std::printf("that"), "this"),
188 "Expected: this\n"
189 " Actual: that");
190 }
191
192 TEST(gtest_extra_test, expect_write_streaming) {
193 EXPECT_WRITE(stdout, std::printf("test"), "test") << "unexpected failure";
194 EXPECT_NONFATAL_FAILURE(EXPECT_WRITE(stdout, std::printf("test"), "other")
195 << "expected failure",
196 "expected failure");
197 }
198 #endif // FMT_USE_FCNTL
199
200 // Tests that the compiler will not complain about unreachable code in the
201 // EXPECT_THROW_MSG macro.
202 TEST(gtest_extra_test, expect_throw_no_unreachable_code_warning) {
203 int n = 0;
204 (void)n;
205 using std::runtime_error;
206 EXPECT_THROW_MSG(throw runtime_error(""), runtime_error, "");
207 EXPECT_NONFATAL_FAILURE(EXPECT_THROW_MSG(n++, runtime_error, ""), "");
208 EXPECT_NONFATAL_FAILURE(EXPECT_THROW_MSG(throw 1, runtime_error, ""), "");
209 EXPECT_NONFATAL_FAILURE(
210 EXPECT_THROW_MSG(throw runtime_error("a"), runtime_error, "b"), "");
211 }
212
213 // Tests that the compiler will not complain about unreachable code in the
214 // EXPECT_SYSTEM_ERROR macro.
215 TEST(gtest_extra_test, expect_system_error_no_unreachable_code_warning) {
216 int n = 0;
217 (void)n;
218 EXPECT_SYSTEM_ERROR(throw fmt::system_error(EDOM, "test"), EDOM, "test");
219 EXPECT_NONFATAL_FAILURE(EXPECT_SYSTEM_ERROR(n++, EDOM, ""), "");
220 EXPECT_NONFATAL_FAILURE(EXPECT_SYSTEM_ERROR(throw 1, EDOM, ""), "");
221 EXPECT_NONFATAL_FAILURE(
222 EXPECT_SYSTEM_ERROR(throw fmt::system_error(EDOM, "aaa"), EDOM, "bbb"),
223 "");
224 }
225
226 TEST(gtest_extra_test, expect_throw_behaves_like_single_statement) {
227 if (::testing::internal::AlwaysFalse())
228 EXPECT_THROW_MSG(do_nothing(), std::exception, "");
229
230 if (::testing::internal::AlwaysTrue())
231 EXPECT_THROW_MSG(throw_exception(), std::exception, "test");
232 else
233 do_nothing();
234 }
235
236 TEST(gtest_extra_test, expect_system_error_behaves_like_single_statement) {
237 if (::testing::internal::AlwaysFalse())
238 EXPECT_SYSTEM_ERROR(do_nothing(), EDOM, "");
239
240 if (::testing::internal::AlwaysTrue())
241 EXPECT_SYSTEM_ERROR(throw_system_error(), EDOM, "test");
242 else
243 do_nothing();
244 }
245
246 TEST(gtest_extra_test, expect_write_behaves_like_single_statement) {
247 if (::testing::internal::AlwaysFalse())
248 EXPECT_WRITE(stdout, std::printf("x"), "x");
249
250 if (::testing::internal::AlwaysTrue())
251 EXPECT_WRITE(stdout, std::printf("x"), "x");
252 else
253 do_nothing();
254 }
255
256 // Tests EXPECT_THROW_MSG.
257 TEST(gtest_extra_test, expect_throw_msg) {
258 EXPECT_THROW_MSG(throw_exception(), std::exception, "test");
259 EXPECT_NONFATAL_FAILURE(
260 EXPECT_THROW_MSG(throw_exception(), std::logic_error, "test"),
261 "Expected: throw_exception() throws an exception of "
262 "type std::logic_error.\n Actual: it throws a different type.");
263 EXPECT_NONFATAL_FAILURE(
264 EXPECT_THROW_MSG(do_nothing(), std::exception, "test"),
265 "Expected: do_nothing() throws an exception of type std::exception.\n"
266 " Actual: it throws nothing.");
267 EXPECT_NONFATAL_FAILURE(
268 EXPECT_THROW_MSG(throw_exception(), std::exception, "other"),
269 "throw_exception() throws an exception with a different message.\n"
270 "Expected: other\n"
271 " Actual: test");
272 }
273
274 // Tests EXPECT_SYSTEM_ERROR.
275 TEST(gtest_extra_test, expect_system_error) {
276 EXPECT_SYSTEM_ERROR(throw_system_error(), EDOM, "test");
277 EXPECT_NONFATAL_FAILURE(
278 EXPECT_SYSTEM_ERROR(throw_exception(), EDOM, "test"),
279 "Expected: throw_exception() throws an exception of "
280 "type std::system_error.\n Actual: it throws a different type.");
281 EXPECT_NONFATAL_FAILURE(
282 EXPECT_SYSTEM_ERROR(do_nothing(), EDOM, "test"),
283 "Expected: do_nothing() throws an exception of type std::system_error.\n"
284 " Actual: it throws nothing.");
285 EXPECT_NONFATAL_FAILURE(
286 EXPECT_SYSTEM_ERROR(throw_system_error(), EDOM, "other"),
287 fmt::format(
288 "throw_system_error() throws an exception with a different message.\n"
289 "Expected: {}\n"
290 " Actual: {}",
291 system_error_message(EDOM, "other"),
292 system_error_message(EDOM, "test")));
293 }
294
295 TEST(gtest_extra_test, expect_throw_msg_streaming) {
296 EXPECT_THROW_MSG(throw_exception(), std::exception, "test")
297 << "unexpected failure";
298 EXPECT_NONFATAL_FAILURE(
299 EXPECT_THROW_MSG(throw_exception(), std::exception, "other")
300 << "expected failure",
301 "expected failure");
302 }
303
304 TEST(gtest_extra_test, expect_system_error_streaming) {
305 EXPECT_SYSTEM_ERROR(throw_system_error(), EDOM, "test")
306 << "unexpected failure";
307 EXPECT_NONFATAL_FAILURE(
308 EXPECT_SYSTEM_ERROR(throw_system_error(), EDOM, "other")
309 << "expected failure",
310 "expected failure");
311 }
312
313 #if FMT_USE_FCNTL
314
315 using fmt::buffered_file;
316 using fmt::file;
317
318 TEST(output_redirect_test, scoped_redirect) {
319 file read_end, write_end;
320 file::pipe(read_end, write_end);
321 {
322 buffered_file file(write_end.fdopen("w"));
323 std::fprintf(file.get(), "[[[");
324 {
325 output_redirect redir(file.get());
326 std::fprintf(file.get(), "censored");
327 }
328 std::fprintf(file.get(), "]]]");
329 }
330 EXPECT_READ(read_end, "[[[]]]");
331 }
332
333 // Test that output_redirect handles errors in flush correctly.
334 TEST(output_redirect_test, flush_error_in_ctor) {
335 file read_end, write_end;
336 file::pipe(read_end, write_end);
337 int write_fd = write_end.descriptor();
338 file write_copy = write_end.dup(write_fd);
339 buffered_file f = write_end.fdopen("w");
340 // Put a character in a file buffer.
341 EXPECT_EQ('x', fputc('x', f.get()));
342 FMT_POSIX(close(write_fd));
343 std::unique_ptr<output_redirect> redir{nullptr};
344 EXPECT_SYSTEM_ERROR_NOASSERT(redir.reset(new output_redirect(f.get())), EBADF,
345 "cannot flush stream");
346 redir.reset(nullptr);
347 write_copy.dup2(write_fd); // "undo" close or dtor will fail
348 }
349
350 TEST(output_redirect_test, dup_error_in_ctor) {
351 buffered_file f = open_buffered_file();
352 int fd = (f.descriptor)();
353 file copy = file::dup(fd);
354 FMT_POSIX(close(fd));
355 std::unique_ptr<output_redirect> redir{nullptr};
356 EXPECT_SYSTEM_ERROR_NOASSERT(
357 redir.reset(new output_redirect(f.get(), false)), EBADF,
358 fmt::format("cannot duplicate file descriptor {}", fd));
359 copy.dup2(fd); // "undo" close or dtor will fail
360 }
361
362 TEST(output_redirect_test, restore_and_read) {
363 file read_end, write_end;
364 file::pipe(read_end, write_end);
365 buffered_file file(write_end.fdopen("w"));
366 std::fprintf(file.get(), "[[[");
367 output_redirect redir(file.get());
368 std::fprintf(file.get(), "censored");
369 EXPECT_EQ("censored", redir.restore_and_read());
370 EXPECT_EQ("", redir.restore_and_read());
371 std::fprintf(file.get(), "]]]");
372 file = buffered_file();
373 EXPECT_READ(read_end, "[[[]]]");
374 }
375
376 // Test that OutputRedirect handles errors in flush correctly.
377 TEST(output_redirect_test, flush_error_in_restore_and_read) {
378 file read_end, write_end;
379 file::pipe(read_end, write_end);
380 int write_fd = write_end.descriptor();
381 file write_copy = write_end.dup(write_fd);
382 buffered_file f = write_end.fdopen("w");
383 output_redirect redir(f.get());
384 // Put a character in a file buffer.
385 EXPECT_EQ('x', fputc('x', f.get()));
386 FMT_POSIX(close(write_fd));
387 EXPECT_SYSTEM_ERROR_NOASSERT(redir.restore_and_read(), EBADF,
388 "cannot flush stream");
389 write_copy.dup2(write_fd); // "undo" close or dtor will fail
390 }
391
392 TEST(output_redirect_test, error_in_dtor) {
393 file read_end, write_end;
394 file::pipe(read_end, write_end);
395 int write_fd = write_end.descriptor();
396 file write_copy = write_end.dup(write_fd);
397 buffered_file f = write_end.fdopen("w");
398 std::unique_ptr<output_redirect> redir(new output_redirect(f.get()));
399 // Put a character in a file buffer.
400 EXPECT_EQ('x', fputc('x', f.get()));
401 EXPECT_WRITE(
402 stderr,
403 {
404 // The close function must be called inside EXPECT_WRITE,
405 // otherwise the system may recycle closed file descriptor when
406 // redirecting the output in EXPECT_STDERR and the second close
407 // will break output redirection.
408 FMT_POSIX(close(write_fd));
409 SUPPRESS_ASSERT(redir.reset(nullptr));
410 },
411 system_error_message(EBADF, "cannot flush stream"));
412 write_copy.dup2(write_fd); // "undo" close or dtor of buffered_file will fail
413 }
414
415 #endif // FMT_USE_FCNTL