dfe3c76e06
This file adds support for using fmt library defining a custom namespace in your code to avoid conflicting with other fmt library versions or 'encapsulate' the implementation you are using inside another namespace.
448 lines
15 KiB
C++
448 lines
15 KiB
C++
/*
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Tests of custom Google Test assertions.
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Copyright (c) 2012-2014, Victor Zverovich
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "gtest-extra.h"
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#include <cstring>
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#include <algorithm>
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#include <stdexcept>
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#include <gtest/gtest-spi.h>
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#if defined(_WIN32) && !defined(__MINGW32__)
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# include <crtdbg.h> // for _CrtSetReportMode
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#endif // _WIN32
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#include "util.h"
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FMT_CUSTOM_NAMESPACE_USING_NAMESPACE
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using testing::internal::scoped_ptr;
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namespace {
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// This is used to suppress coverity warnings about untrusted values.
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std::string sanitize(const std::string &s) {
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std::string result;
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for (std::string::const_iterator i = s.begin(), end = s.end(); i != end; ++i)
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result.push_back(static_cast<char>(*i & 0xff));
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return result;
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}
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// Tests that assertion macros evaluate their arguments exactly once.
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class SingleEvaluationTest : public ::testing::Test {
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protected:
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SingleEvaluationTest() {
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p_ = s_;
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a_ = 0;
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b_ = 0;
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}
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static const char* const s_;
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static const char* p_;
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static int a_;
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static int b_;
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};
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const char* const SingleEvaluationTest::s_ = "01234";
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const char* SingleEvaluationTest::p_;
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int SingleEvaluationTest::a_;
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int SingleEvaluationTest::b_;
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void do_nothing() {}
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void throw_exception() {
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throw std::runtime_error("test");
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}
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void throw_system_error() {
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throw fmt::SystemError(EDOM, "test");
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}
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// Tests that when EXPECT_THROW_MSG fails, it evaluates its message argument
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// exactly once.
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TEST_F(SingleEvaluationTest, FailedEXPECT_THROW_MSG) {
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EXPECT_NONFATAL_FAILURE(
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EXPECT_THROW_MSG(throw_exception(), std::exception, p_++), "01234");
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EXPECT_EQ(s_ + 1, p_);
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}
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// Tests that when EXPECT_SYSTEM_ERROR fails, it evaluates its message argument
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// exactly once.
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TEST_F(SingleEvaluationTest, FailedEXPECT_SYSTEM_ERROR) {
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EXPECT_NONFATAL_FAILURE(
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EXPECT_SYSTEM_ERROR(throw_system_error(), EDOM, p_++), "01234");
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EXPECT_EQ(s_ + 1, p_);
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}
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// Tests that when EXPECT_WRITE fails, it evaluates its message argument
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// exactly once.
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TEST_F(SingleEvaluationTest, FailedEXPECT_WRITE) {
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EXPECT_NONFATAL_FAILURE(
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EXPECT_WRITE(stdout, std::printf("test"), p_++), "01234");
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EXPECT_EQ(s_ + 1, p_);
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}
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// Tests that assertion arguments are evaluated exactly once.
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TEST_F(SingleEvaluationTest, ExceptionTests) {
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// successful EXPECT_THROW_MSG
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EXPECT_THROW_MSG({ // NOLINT
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a_++;
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throw_exception();
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}, std::exception, (b_++, "test"));
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EXPECT_EQ(1, a_);
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EXPECT_EQ(1, b_);
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// failed EXPECT_THROW_MSG, throws different type
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EXPECT_NONFATAL_FAILURE(EXPECT_THROW_MSG({ // NOLINT
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a_++;
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throw_exception();
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}, std::logic_error, (b_++, "test")), "throws a different type");
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EXPECT_EQ(2, a_);
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EXPECT_EQ(2, b_);
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// failed EXPECT_THROW_MSG, throws an exception with different message
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EXPECT_NONFATAL_FAILURE(EXPECT_THROW_MSG({ // NOLINT
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a_++;
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throw_exception();
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}, std::exception, (b_++, "other")),
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"throws an exception with a different message");
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EXPECT_EQ(3, a_);
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EXPECT_EQ(3, b_);
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// failed EXPECT_THROW_MSG, throws nothing
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EXPECT_NONFATAL_FAILURE(
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EXPECT_THROW_MSG(a_++, std::exception, (b_++, "test")), "throws nothing");
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EXPECT_EQ(4, a_);
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EXPECT_EQ(4, b_);
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}
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TEST_F(SingleEvaluationTest, SystemErrorTests) {
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// successful EXPECT_SYSTEM_ERROR
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EXPECT_SYSTEM_ERROR({ // NOLINT
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a_++;
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throw_system_error();
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}, EDOM, (b_++, "test"));
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EXPECT_EQ(1, a_);
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EXPECT_EQ(1, b_);
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// failed EXPECT_SYSTEM_ERROR, throws different type
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EXPECT_NONFATAL_FAILURE(EXPECT_SYSTEM_ERROR({ // NOLINT
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a_++;
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throw_exception();
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}, EDOM, (b_++, "test")), "throws a different type");
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EXPECT_EQ(2, a_);
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EXPECT_EQ(2, b_);
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// failed EXPECT_SYSTEM_ERROR, throws an exception with different message
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EXPECT_NONFATAL_FAILURE(EXPECT_SYSTEM_ERROR({ // NOLINT
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a_++;
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throw_system_error();
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}, EDOM, (b_++, "other")),
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"throws an exception with a different message");
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EXPECT_EQ(3, a_);
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EXPECT_EQ(3, b_);
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// failed EXPECT_SYSTEM_ERROR, throws nothing
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EXPECT_NONFATAL_FAILURE(
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EXPECT_SYSTEM_ERROR(a_++, EDOM, (b_++, "test")), "throws nothing");
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EXPECT_EQ(4, a_);
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EXPECT_EQ(4, b_);
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}
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// Tests that assertion arguments are evaluated exactly once.
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TEST_F(SingleEvaluationTest, WriteTests) {
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// successful EXPECT_WRITE
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EXPECT_WRITE(stdout, { // NOLINT
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a_++;
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std::printf("test");
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}, (b_++, "test"));
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EXPECT_EQ(1, a_);
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EXPECT_EQ(1, b_);
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// failed EXPECT_WRITE
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EXPECT_NONFATAL_FAILURE(EXPECT_WRITE(stdout, { // NOLINT
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a_++;
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std::printf("test");
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}, (b_++, "other")), "Actual: test");
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EXPECT_EQ(2, a_);
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EXPECT_EQ(2, b_);
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}
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// Tests that the compiler will not complain about unreachable code in the
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// EXPECT_THROW_MSG macro.
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TEST(ExpectThrowTest, DoesNotGenerateUnreachableCodeWarning) {
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int n = 0;
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using std::runtime_error;
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EXPECT_THROW_MSG(throw runtime_error(""), runtime_error, "");
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EXPECT_NONFATAL_FAILURE(EXPECT_THROW_MSG(n++, runtime_error, ""), "");
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EXPECT_NONFATAL_FAILURE(EXPECT_THROW_MSG(throw 1, runtime_error, ""), "");
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EXPECT_NONFATAL_FAILURE(EXPECT_THROW_MSG(
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throw runtime_error("a"), runtime_error, "b"), "");
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}
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// Tests that the compiler will not complain about unreachable code in the
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// EXPECT_SYSTEM_ERROR macro.
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TEST(ExpectSystemErrorTest, DoesNotGenerateUnreachableCodeWarning) {
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int n = 0;
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EXPECT_SYSTEM_ERROR(throw fmt::SystemError(EDOM, "test"), EDOM, "test");
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EXPECT_NONFATAL_FAILURE(EXPECT_SYSTEM_ERROR(n++, EDOM, ""), "");
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EXPECT_NONFATAL_FAILURE(EXPECT_SYSTEM_ERROR(throw 1, EDOM, ""), "");
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EXPECT_NONFATAL_FAILURE(EXPECT_SYSTEM_ERROR(
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throw fmt::SystemError(EDOM, "aaa"), EDOM, "bbb"), "");
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}
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TEST(AssertionSyntaxTest, ExceptionAssertionBehavesLikeSingleStatement) {
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if (::testing::internal::AlwaysFalse())
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EXPECT_THROW_MSG(do_nothing(), std::exception, "");
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if (::testing::internal::AlwaysTrue())
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EXPECT_THROW_MSG(throw_exception(), std::exception, "test");
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else
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do_nothing();
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}
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TEST(AssertionSyntaxTest, SystemErrorAssertionBehavesLikeSingleStatement) {
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if (::testing::internal::AlwaysFalse())
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EXPECT_SYSTEM_ERROR(do_nothing(), EDOM, "");
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if (::testing::internal::AlwaysTrue())
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EXPECT_SYSTEM_ERROR(throw_system_error(), EDOM, "test");
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else
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do_nothing();
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}
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TEST(AssertionSyntaxTest, WriteAssertionBehavesLikeSingleStatement) {
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if (::testing::internal::AlwaysFalse())
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EXPECT_WRITE(stdout, std::printf("x"), "x");
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if (::testing::internal::AlwaysTrue())
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EXPECT_WRITE(stdout, std::printf("x"), "x");
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else
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do_nothing();
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}
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// Tests EXPECT_THROW_MSG.
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TEST(ExpectTest, EXPECT_THROW_MSG) {
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EXPECT_THROW_MSG(throw_exception(), std::exception, "test");
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EXPECT_NONFATAL_FAILURE(
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EXPECT_THROW_MSG(throw_exception(), std::logic_error, "test"),
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"Expected: throw_exception() throws an exception of "
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"type std::logic_error.\n Actual: it throws a different type.");
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EXPECT_NONFATAL_FAILURE(
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EXPECT_THROW_MSG(do_nothing(), std::exception, "test"),
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"Expected: do_nothing() throws an exception of type std::exception.\n"
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" Actual: it throws nothing.");
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EXPECT_NONFATAL_FAILURE(
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EXPECT_THROW_MSG(throw_exception(), std::exception, "other"),
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"throw_exception() throws an exception with a different message.\n"
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"Expected: other\n"
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" Actual: test");
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}
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#if (FMT_CUSTOM_NAMESPACE == 1)
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#define FMT_COMPILER_STRINGFY_(x) #x
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#define FMT_COMPILER_STRINGFY(x) FMT_COMPILER_STRINGFY_(x)
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#define EXPECT_CUSTOM_NAMESPACE_PREFIX FMT_COMPILER_STRINGFY(FMT_CUSTOM_NAMESPACE_PREFIX)
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#else
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#define EXPECT_CUSTOM_NAMESPACE_PREFIX ""
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#endif
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#define EXPECT_SYSTEM_ERROR_THROW_EXCEPTION_MESSAGE "Expected: throw_exception() throws an exception of " \
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"type " EXPECT_CUSTOM_NAMESPACE_PREFIX "::fmt::SystemError.\n Actual: it throws a different type."
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#define EXPECT_SYSTEM_ERROR_DO_NOTHING_MESSAGE "Expected: do_nothing() throws an exception of type " EXPECT_CUSTOM_NAMESPACE_PREFIX "::fmt::SystemError.\n" \
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" Actual: it throws nothing."
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// Tests EXPECT_SYSTEM_ERROR.
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TEST(ExpectTest, EXPECT_SYSTEM_ERROR) {
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EXPECT_SYSTEM_ERROR(throw_system_error(), EDOM, "test");
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EXPECT_NONFATAL_FAILURE(
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EXPECT_SYSTEM_ERROR(throw_exception(), EDOM, "test"),
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EXPECT_SYSTEM_ERROR_THROW_EXCEPTION_MESSAGE);
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EXPECT_NONFATAL_FAILURE(
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EXPECT_SYSTEM_ERROR(do_nothing(), EDOM, "test"),
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EXPECT_SYSTEM_ERROR_DO_NOTHING_MESSAGE);
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EXPECT_NONFATAL_FAILURE(
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EXPECT_SYSTEM_ERROR(throw_system_error(), EDOM, "other"),
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fmt::format(
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"throw_system_error() throws an exception with a different message.\n"
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"Expected: {}\n"
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" Actual: {}",
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format_system_error(EDOM, "other"),
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format_system_error(EDOM, "test")));
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}
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// Tests EXPECT_WRITE.
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TEST(ExpectTest, EXPECT_WRITE) {
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EXPECT_WRITE(stdout, do_nothing(), "");
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EXPECT_WRITE(stdout, std::printf("test"), "test");
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EXPECT_WRITE(stderr, std::fprintf(stderr, "test"), "test");
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EXPECT_NONFATAL_FAILURE(
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EXPECT_WRITE(stdout, std::printf("that"), "this"),
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"Expected: this\n"
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" Actual: that");
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}
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TEST(StreamingAssertionsTest, EXPECT_THROW_MSG) {
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EXPECT_THROW_MSG(throw_exception(), std::exception, "test")
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<< "unexpected failure";
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EXPECT_NONFATAL_FAILURE(
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EXPECT_THROW_MSG(throw_exception(), std::exception, "other")
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<< "expected failure", "expected failure");
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}
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TEST(StreamingAssertionsTest, EXPECT_SYSTEM_ERROR) {
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EXPECT_SYSTEM_ERROR(throw_system_error(), EDOM, "test")
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<< "unexpected failure";
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EXPECT_NONFATAL_FAILURE(
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EXPECT_SYSTEM_ERROR(throw_system_error(), EDOM, "other")
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<< "expected failure", "expected failure");
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}
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TEST(StreamingAssertionsTest, EXPECT_WRITE) {
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EXPECT_WRITE(stdout, std::printf("test"), "test")
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<< "unexpected failure";
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EXPECT_NONFATAL_FAILURE(
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EXPECT_WRITE(stdout, std::printf("test"), "other")
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<< "expected failure", "expected failure");
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}
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TEST(UtilTest, FormatSystemError) {
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fmt::MemoryWriter out;
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fmt::format_system_error(out, EDOM, "test message");
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EXPECT_EQ(out.str(), format_system_error(EDOM, "test message"));
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}
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#if FMT_USE_FILE_DESCRIPTORS
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using fmt::BufferedFile;
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using fmt::ErrorCode;
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using fmt::File;
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TEST(ErrorCodeTest, Ctor) {
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EXPECT_EQ(0, ErrorCode().get());
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EXPECT_EQ(42, ErrorCode(42).get());
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}
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TEST(OutputRedirectTest, ScopedRedirect) {
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File read_end, write_end;
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File::pipe(read_end, write_end);
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{
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BufferedFile file(write_end.fdopen("w"));
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std::fprintf(file.get(), "[[[");
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{
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OutputRedirect redir(file.get());
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std::fprintf(file.get(), "censored");
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}
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std::fprintf(file.get(), "]]]");
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}
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EXPECT_READ(read_end, "[[[]]]");
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}
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// Test that OutputRedirect handles errors in flush correctly.
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TEST(OutputRedirectTest, FlushErrorInCtor) {
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File read_end, write_end;
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File::pipe(read_end, write_end);
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int write_fd = write_end.descriptor();
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File write_copy = write_end.dup(write_fd);
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BufferedFile f = write_end.fdopen("w");
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// Put a character in a file buffer.
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EXPECT_EQ('x', fputc('x', f.get()));
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FMT_POSIX(close(write_fd));
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scoped_ptr<OutputRedirect> redir;
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EXPECT_SYSTEM_ERROR_NOASSERT(redir.reset(new OutputRedirect(f.get())),
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EBADF, "cannot flush stream");
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redir.reset();
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write_copy.dup2(write_fd); // "undo" close or dtor will fail
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}
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TEST(OutputRedirectTest, DupErrorInCtor) {
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BufferedFile f = open_buffered_file();
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int fd = (f.fileno)();
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File copy = File::dup(fd);
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FMT_POSIX(close(fd));
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scoped_ptr<OutputRedirect> redir;
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EXPECT_SYSTEM_ERROR_NOASSERT(redir.reset(new OutputRedirect(f.get())),
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EBADF, fmt::format("cannot duplicate file descriptor {}", fd));
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copy.dup2(fd); // "undo" close or dtor will fail
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}
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TEST(OutputRedirectTest, RestoreAndRead) {
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File read_end, write_end;
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File::pipe(read_end, write_end);
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BufferedFile file(write_end.fdopen("w"));
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std::fprintf(file.get(), "[[[");
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OutputRedirect redir(file.get());
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std::fprintf(file.get(), "censored");
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EXPECT_EQ("censored", sanitize(redir.restore_and_read()));
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EXPECT_EQ("", sanitize(redir.restore_and_read()));
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std::fprintf(file.get(), "]]]");
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file = BufferedFile();
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EXPECT_READ(read_end, "[[[]]]");
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}
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// Test that OutputRedirect handles errors in flush correctly.
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TEST(OutputRedirectTest, FlushErrorInRestoreAndRead) {
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File read_end, write_end;
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File::pipe(read_end, write_end);
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int write_fd = write_end.descriptor();
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File write_copy = write_end.dup(write_fd);
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BufferedFile f = write_end.fdopen("w");
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OutputRedirect redir(f.get());
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// Put a character in a file buffer.
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EXPECT_EQ('x', fputc('x', f.get()));
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FMT_POSIX(close(write_fd));
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EXPECT_SYSTEM_ERROR_NOASSERT(redir.restore_and_read(),
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EBADF, "cannot flush stream");
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write_copy.dup2(write_fd); // "undo" close or dtor will fail
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}
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TEST(OutputRedirectTest, ErrorInDtor) {
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File read_end, write_end;
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File::pipe(read_end, write_end);
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int write_fd = write_end.descriptor();
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File write_copy = write_end.dup(write_fd);
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BufferedFile f = write_end.fdopen("w");
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scoped_ptr<OutputRedirect> redir(new OutputRedirect(f.get()));
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// Put a character in a file buffer.
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EXPECT_EQ('x', fputc('x', f.get()));
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EXPECT_WRITE(stderr, {
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// The close function must be called inside EXPECT_WRITE, otherwise
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// the system may recycle closed file descriptor when redirecting the
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// output in EXPECT_STDERR and the second close will break output
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// redirection.
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FMT_POSIX(close(write_fd));
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SUPPRESS_ASSERT(redir.reset());
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}, format_system_error(EBADF, "cannot flush stream"));
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write_copy.dup2(write_fd); // "undo" close or dtor of BufferedFile will fail
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}
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#endif // FMT_USE_FILE_DESCRIPTORS
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} // namespace
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