| // Formatting library for C++ - tests of custom Google Test assertions |
| // |
| // Copyright (c) 2012 - present, Victor Zverovich |
| // All rights reserved. |
| // |
| // For the license information refer to format.h. |
| |
| #include "gtest-extra.h" |
| |
| #include <gtest/gtest-spi.h> |
| |
| #include <cstring> |
| #include <memory> |
| #include <stdexcept> |
| |
| #include "fmt/os.h" |
| #include "util.h" |
| |
| // Tests that assertion macros evaluate their arguments exactly once. |
| namespace { |
| class single_evaluation_test : public ::testing::Test { |
| protected: |
| single_evaluation_test() { |
| p_ = s_; |
| a_ = 0; |
| b_ = 0; |
| } |
| |
| static const char* const s_; |
| static const char* p_; |
| |
| static int a_; |
| static int b_; |
| }; |
| } // namespace |
| |
| const char* const single_evaluation_test::s_ = "01234"; |
| const char* single_evaluation_test::p_; |
| int single_evaluation_test::a_; |
| int single_evaluation_test::b_; |
| |
| void do_nothing() {} |
| |
| FMT_NORETURN void throw_exception() { throw std::runtime_error("test"); } |
| |
| FMT_NORETURN void throw_system_error() { |
| throw fmt::system_error(EDOM, "test"); |
| } |
| |
| // Tests that when EXPECT_THROW_MSG fails, it evaluates its message argument |
| // exactly once. |
| TEST_F(single_evaluation_test, failed_expect_throw_msg) { |
| EXPECT_NONFATAL_FAILURE( |
| EXPECT_THROW_MSG(throw_exception(), std::exception, p_++), "01234"); |
| EXPECT_EQ(s_ + 1, p_); |
| } |
| |
| // Tests that when EXPECT_SYSTEM_ERROR fails, it evaluates its message argument |
| // exactly once. |
| TEST_F(single_evaluation_test, failed_expect_system_error) { |
| EXPECT_NONFATAL_FAILURE(EXPECT_SYSTEM_ERROR(throw_system_error(), EDOM, p_++), |
| "01234"); |
| EXPECT_EQ(s_ + 1, p_); |
| } |
| |
| // Tests that assertion arguments are evaluated exactly once. |
| TEST_F(single_evaluation_test, exception_tests) { |
| // successful EXPECT_THROW_MSG |
| EXPECT_THROW_MSG( |
| { // NOLINT |
| a_++; |
| throw_exception(); |
| }, |
| std::exception, (b_++, "test")); |
| EXPECT_EQ(1, a_); |
| EXPECT_EQ(1, b_); |
| |
| // failed EXPECT_THROW_MSG, throws different type |
| EXPECT_NONFATAL_FAILURE(EXPECT_THROW_MSG( |
| { // NOLINT |
| a_++; |
| throw_exception(); |
| }, |
| std::logic_error, (b_++, "test")), |
| "throws a different type"); |
| EXPECT_EQ(2, a_); |
| EXPECT_EQ(2, b_); |
| |
| // failed EXPECT_THROW_MSG, throws an exception with different message |
| EXPECT_NONFATAL_FAILURE(EXPECT_THROW_MSG( |
| { // NOLINT |
| a_++; |
| throw_exception(); |
| }, |
| std::exception, (b_++, "other")), |
| "throws an exception with a different message"); |
| EXPECT_EQ(3, a_); |
| EXPECT_EQ(3, b_); |
| |
| // failed EXPECT_THROW_MSG, throws nothing |
| EXPECT_NONFATAL_FAILURE( |
| EXPECT_THROW_MSG(a_++, std::exception, (b_++, "test")), "throws nothing"); |
| EXPECT_EQ(4, a_); |
| EXPECT_EQ(4, b_); |
| } |
| |
| TEST_F(single_evaluation_test, system_error_tests) { |
| // successful EXPECT_SYSTEM_ERROR |
| EXPECT_SYSTEM_ERROR( |
| { // NOLINT |
| a_++; |
| throw_system_error(); |
| }, |
| EDOM, (b_++, "test")); |
| EXPECT_EQ(1, a_); |
| EXPECT_EQ(1, b_); |
| |
| // failed EXPECT_SYSTEM_ERROR, throws different type |
| EXPECT_NONFATAL_FAILURE(EXPECT_SYSTEM_ERROR( |
| { // NOLINT |
| a_++; |
| throw_exception(); |
| }, |
| EDOM, (b_++, "test")), |
| "throws a different type"); |
| EXPECT_EQ(2, a_); |
| EXPECT_EQ(2, b_); |
| |
| // failed EXPECT_SYSTEM_ERROR, throws an exception with different message |
| EXPECT_NONFATAL_FAILURE(EXPECT_SYSTEM_ERROR( |
| { // NOLINT |
| a_++; |
| throw_system_error(); |
| }, |
| EDOM, (b_++, "other")), |
| "throws an exception with a different message"); |
| EXPECT_EQ(3, a_); |
| EXPECT_EQ(3, b_); |
| |
| // failed EXPECT_SYSTEM_ERROR, throws nothing |
| EXPECT_NONFATAL_FAILURE(EXPECT_SYSTEM_ERROR(a_++, EDOM, (b_++, "test")), |
| "throws nothing"); |
| EXPECT_EQ(4, a_); |
| EXPECT_EQ(4, b_); |
| } |
| |
| #if FMT_USE_FCNTL |
| // Tests that when EXPECT_WRITE fails, it evaluates its message argument |
| // exactly once. |
| TEST_F(single_evaluation_test, failed_expect_write) { |
| EXPECT_NONFATAL_FAILURE(EXPECT_WRITE(stdout, std::printf("test"), p_++), |
| "01234"); |
| EXPECT_EQ(s_ + 1, p_); |
| } |
| |
| // Tests that assertion arguments are evaluated exactly once. |
| TEST_F(single_evaluation_test, write_tests) { |
| // successful EXPECT_WRITE |
| EXPECT_WRITE( |
| stdout, |
| { // NOLINT |
| a_++; |
| std::printf("test"); |
| }, |
| (b_++, "test")); |
| EXPECT_EQ(1, a_); |
| EXPECT_EQ(1, b_); |
| |
| // failed EXPECT_WRITE |
| EXPECT_NONFATAL_FAILURE(EXPECT_WRITE( |
| stdout, |
| { // NOLINT |
| a_++; |
| std::printf("test"); |
| }, |
| (b_++, "other")), |
| "Actual: test"); |
| EXPECT_EQ(2, a_); |
| EXPECT_EQ(2, b_); |
| } |
| |
| // Tests EXPECT_WRITE. |
| TEST(gtest_extra_test, expect_write) { |
| EXPECT_WRITE(stdout, do_nothing(), ""); |
| EXPECT_WRITE(stdout, std::printf("test"), "test"); |
| EXPECT_WRITE(stderr, std::fprintf(stderr, "test"), "test"); |
| EXPECT_NONFATAL_FAILURE(EXPECT_WRITE(stdout, std::printf("that"), "this"), |
| "Expected: this\n" |
| " Actual: that"); |
| } |
| |
| TEST(gtest_extra_test, expect_write_streaming) { |
| EXPECT_WRITE(stdout, std::printf("test"), "test") << "unexpected failure"; |
| EXPECT_NONFATAL_FAILURE(EXPECT_WRITE(stdout, std::printf("test"), "other") |
| << "expected failure", |
| "expected failure"); |
| } |
| #endif // FMT_USE_FCNTL |
| |
| // Tests that the compiler will not complain about unreachable code in the |
| // EXPECT_THROW_MSG macro. |
| TEST(gtest_extra_test, expect_throw_no_unreachable_code_warning) { |
| int n = 0; |
| (void)n; |
| using std::runtime_error; |
| EXPECT_THROW_MSG(throw runtime_error(""), runtime_error, ""); |
| EXPECT_NONFATAL_FAILURE(EXPECT_THROW_MSG(n++, runtime_error, ""), ""); |
| EXPECT_NONFATAL_FAILURE(EXPECT_THROW_MSG(throw 1, runtime_error, ""), ""); |
| EXPECT_NONFATAL_FAILURE( |
| EXPECT_THROW_MSG(throw runtime_error("a"), runtime_error, "b"), ""); |
| } |
| |
| // Tests that the compiler will not complain about unreachable code in the |
| // EXPECT_SYSTEM_ERROR macro. |
| TEST(gtest_extra_test, expect_system_error_no_unreachable_code_warning) { |
| int n = 0; |
| (void)n; |
| EXPECT_SYSTEM_ERROR(throw fmt::system_error(EDOM, "test"), EDOM, "test"); |
| EXPECT_NONFATAL_FAILURE(EXPECT_SYSTEM_ERROR(n++, EDOM, ""), ""); |
| EXPECT_NONFATAL_FAILURE(EXPECT_SYSTEM_ERROR(throw 1, EDOM, ""), ""); |
| EXPECT_NONFATAL_FAILURE( |
| EXPECT_SYSTEM_ERROR(throw fmt::system_error(EDOM, "aaa"), EDOM, "bbb"), |
| ""); |
| } |
| |
| TEST(gtest_extra_test, expect_throw_behaves_like_single_statement) { |
| if (::testing::internal::AlwaysFalse()) |
| EXPECT_THROW_MSG(do_nothing(), std::exception, ""); |
| |
| if (::testing::internal::AlwaysTrue()) |
| EXPECT_THROW_MSG(throw_exception(), std::exception, "test"); |
| else |
| do_nothing(); |
| } |
| |
| TEST(gtest_extra_test, expect_system_error_behaves_like_single_statement) { |
| if (::testing::internal::AlwaysFalse()) |
| EXPECT_SYSTEM_ERROR(do_nothing(), EDOM, ""); |
| |
| if (::testing::internal::AlwaysTrue()) |
| EXPECT_SYSTEM_ERROR(throw_system_error(), EDOM, "test"); |
| else |
| do_nothing(); |
| } |
| |
| TEST(gtest_extra_test, expect_write_behaves_like_single_statement) { |
| if (::testing::internal::AlwaysFalse()) |
| EXPECT_WRITE(stdout, std::printf("x"), "x"); |
| |
| if (::testing::internal::AlwaysTrue()) |
| EXPECT_WRITE(stdout, std::printf("x"), "x"); |
| else |
| do_nothing(); |
| } |
| |
| // Tests EXPECT_THROW_MSG. |
| TEST(gtest_extra_test, expect_throw_msg) { |
| EXPECT_THROW_MSG(throw_exception(), std::exception, "test"); |
| EXPECT_NONFATAL_FAILURE( |
| EXPECT_THROW_MSG(throw_exception(), std::logic_error, "test"), |
| "Expected: throw_exception() throws an exception of " |
| "type std::logic_error.\n Actual: it throws a different type."); |
| EXPECT_NONFATAL_FAILURE( |
| EXPECT_THROW_MSG(do_nothing(), std::exception, "test"), |
| "Expected: do_nothing() throws an exception of type std::exception.\n" |
| " Actual: it throws nothing."); |
| EXPECT_NONFATAL_FAILURE( |
| EXPECT_THROW_MSG(throw_exception(), std::exception, "other"), |
| "throw_exception() throws an exception with a different message.\n" |
| "Expected: other\n" |
| " Actual: test"); |
| } |
| |
| // Tests EXPECT_SYSTEM_ERROR. |
| TEST(gtest_extra_test, expect_system_error) { |
| EXPECT_SYSTEM_ERROR(throw_system_error(), EDOM, "test"); |
| EXPECT_NONFATAL_FAILURE( |
| EXPECT_SYSTEM_ERROR(throw_exception(), EDOM, "test"), |
| "Expected: throw_exception() throws an exception of " |
| "type std::system_error.\n Actual: it throws a different type."); |
| EXPECT_NONFATAL_FAILURE( |
| EXPECT_SYSTEM_ERROR(do_nothing(), EDOM, "test"), |
| "Expected: do_nothing() throws an exception of type std::system_error.\n" |
| " Actual: it throws nothing."); |
| EXPECT_NONFATAL_FAILURE( |
| EXPECT_SYSTEM_ERROR(throw_system_error(), EDOM, "other"), |
| fmt::format( |
| "throw_system_error() throws an exception with a different message.\n" |
| "Expected: {}\n" |
| " Actual: {}", |
| system_error_message(EDOM, "other"), |
| system_error_message(EDOM, "test"))); |
| } |
| |
| TEST(gtest_extra_test, expect_throw_msg_streaming) { |
| EXPECT_THROW_MSG(throw_exception(), std::exception, "test") |
| << "unexpected failure"; |
| EXPECT_NONFATAL_FAILURE( |
| EXPECT_THROW_MSG(throw_exception(), std::exception, "other") |
| << "expected failure", |
| "expected failure"); |
| } |
| |
| TEST(gtest_extra_test, expect_system_error_streaming) { |
| EXPECT_SYSTEM_ERROR(throw_system_error(), EDOM, "test") |
| << "unexpected failure"; |
| EXPECT_NONFATAL_FAILURE( |
| EXPECT_SYSTEM_ERROR(throw_system_error(), EDOM, "other") |
| << "expected failure", |
| "expected failure"); |
| } |
| |
| #if FMT_USE_FCNTL |
| |
| using fmt::buffered_file; |
| using fmt::file; |
| |
| TEST(output_redirect_test, scoped_redirect) { |
| file read_end, write_end; |
| file::pipe(read_end, write_end); |
| { |
| buffered_file file(write_end.fdopen("w")); |
| std::fprintf(file.get(), "[[["); |
| { |
| output_redirect redir(file.get()); |
| std::fprintf(file.get(), "censored"); |
| } |
| std::fprintf(file.get(), "]]]"); |
| } |
| EXPECT_READ(read_end, "[[[]]]"); |
| } |
| |
| // Test that output_redirect handles errors in flush correctly. |
| TEST(output_redirect_test, flush_error_in_ctor) { |
| file read_end, write_end; |
| file::pipe(read_end, write_end); |
| int write_fd = write_end.descriptor(); |
| file write_copy = write_end.dup(write_fd); |
| buffered_file f = write_end.fdopen("w"); |
| // Put a character in a file buffer. |
| EXPECT_EQ('x', fputc('x', f.get())); |
| FMT_POSIX(close(write_fd)); |
| std::unique_ptr<output_redirect> redir{nullptr}; |
| EXPECT_SYSTEM_ERROR_NOASSERT(redir.reset(new output_redirect(f.get())), EBADF, |
| "cannot flush stream"); |
| redir.reset(nullptr); |
| write_copy.dup2(write_fd); // "undo" close or dtor will fail |
| } |
| |
| TEST(output_redirect_test, dup_error_in_ctor) { |
| buffered_file f = open_buffered_file(); |
| int fd = (f.descriptor)(); |
| file copy = file::dup(fd); |
| FMT_POSIX(close(fd)); |
| std::unique_ptr<output_redirect> redir{nullptr}; |
| EXPECT_SYSTEM_ERROR_NOASSERT( |
| redir.reset(new output_redirect(f.get(), false)), EBADF, |
| fmt::format("cannot duplicate file descriptor {}", fd)); |
| copy.dup2(fd); // "undo" close or dtor will fail |
| } |
| |
| TEST(output_redirect_test, restore_and_read) { |
| file read_end, write_end; |
| file::pipe(read_end, write_end); |
| buffered_file file(write_end.fdopen("w")); |
| std::fprintf(file.get(), "[[["); |
| output_redirect redir(file.get()); |
| std::fprintf(file.get(), "censored"); |
| EXPECT_EQ("censored", redir.restore_and_read()); |
| EXPECT_EQ("", redir.restore_and_read()); |
| std::fprintf(file.get(), "]]]"); |
| file = buffered_file(); |
| EXPECT_READ(read_end, "[[[]]]"); |
| } |
| |
| // Test that OutputRedirect handles errors in flush correctly. |
| TEST(output_redirect_test, flush_error_in_restore_and_read) { |
| file read_end, write_end; |
| file::pipe(read_end, write_end); |
| int write_fd = write_end.descriptor(); |
| file write_copy = write_end.dup(write_fd); |
| buffered_file f = write_end.fdopen("w"); |
| output_redirect redir(f.get()); |
| // Put a character in a file buffer. |
| EXPECT_EQ('x', fputc('x', f.get())); |
| FMT_POSIX(close(write_fd)); |
| EXPECT_SYSTEM_ERROR_NOASSERT(redir.restore_and_read(), EBADF, |
| "cannot flush stream"); |
| write_copy.dup2(write_fd); // "undo" close or dtor will fail |
| } |
| |
| TEST(output_redirect_test, error_in_dtor) { |
| file read_end, write_end; |
| file::pipe(read_end, write_end); |
| int write_fd = write_end.descriptor(); |
| file write_copy = write_end.dup(write_fd); |
| buffered_file f = write_end.fdopen("w"); |
| std::unique_ptr<output_redirect> redir(new output_redirect(f.get())); |
| // Put a character in a file buffer. |
| EXPECT_EQ('x', fputc('x', f.get())); |
| EXPECT_WRITE( |
| stderr, |
| { |
| // The close function must be called inside EXPECT_WRITE, |
| // otherwise the system may recycle closed file descriptor when |
| // redirecting the output in EXPECT_STDERR and the second close |
| // will break output redirection. |
| FMT_POSIX(close(write_fd)); |
| SUPPRESS_ASSERT(redir.reset(nullptr)); |
| }, |
| system_error_message(EBADF, "cannot flush stream")); |
| write_copy.dup2(write_fd); // "undo" close or dtor of buffered_file will fail |
| } |
| |
| #endif // FMT_USE_FCNTL |