138 lines
4.7 KiB
C++
138 lines
4.7 KiB
C++
/*
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Formatting library implementation tests.
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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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#define FMT_NOEXCEPT
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#include "test-assert.h"
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// Include format.cc instead of format.h to test implementation-specific stuff.
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#include "fmt/format.cc"
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#include <algorithm>
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#include <cstring>
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#include "gmock/gmock.h"
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#include "gtest-extra.h"
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#include "util.h"
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#undef min
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#undef max
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template <typename T>
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struct ValueExtractor {
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T operator()(T value) {
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return value;
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}
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template <typename U>
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T operator()(U) {
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throw std::runtime_error(fmt::format("invalid type {}", typeid(U).name()));
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return T();
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}
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};
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TEST(FormatTest, ArgConverter) {
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fmt::LongLong value = std::numeric_limits<fmt::LongLong>::max();
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auto arg = fmt::internal::make_arg<fmt::context>(value);
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visit(fmt::internal::ArgConverter<
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fmt::LongLong, fmt::context>(arg, 'd'), arg);
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EXPECT_EQ(value, visit(ValueExtractor<fmt::LongLong>(), arg));
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}
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TEST(FormatTest, FormatNegativeNaN) {
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double nan = std::numeric_limits<double>::quiet_NaN();
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if (fmt::internal::fputil::isnegative(-nan))
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EXPECT_EQ("-nan", fmt::format("{}", -nan));
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else
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fmt::print("Warning: compiler doesn't handle negative NaN correctly");
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}
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TEST(FormatTest, StrError) {
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char *message = 0;
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char buffer[BUFFER_SIZE];
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EXPECT_ASSERT(fmt::safe_strerror(EDOM, message = 0, 0), "invalid buffer");
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EXPECT_ASSERT(fmt::safe_strerror(EDOM, message = buffer, 0),
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"invalid buffer");
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buffer[0] = 'x';
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#if defined(_GNU_SOURCE) && !defined(__COVERITY__)
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// Use invalid error code to make sure that safe_strerror returns an error
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// message in the buffer rather than a pointer to a static string.
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int error_code = -1;
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#else
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int error_code = EDOM;
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#endif
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int result = fmt::safe_strerror(error_code, message = buffer, BUFFER_SIZE);
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EXPECT_EQ(0, result);
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std::size_t message_size = std::strlen(message);
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EXPECT_GE(BUFFER_SIZE - 1u, message_size);
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EXPECT_EQ(get_system_error(error_code), message);
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// safe_strerror never uses buffer on MinGW.
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#ifndef __MINGW32__
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result = fmt::safe_strerror(error_code, message = buffer, message_size);
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EXPECT_EQ(ERANGE, result);
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result = fmt::safe_strerror(error_code, message = buffer, 1);
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EXPECT_EQ(buffer, message); // Message should point to buffer.
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EXPECT_EQ(ERANGE, result);
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EXPECT_STREQ("", message);
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#endif
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}
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TEST(FormatTest, FormatErrorCode) {
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std::string msg = "error 42", sep = ": ";
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{
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fmt::MemoryWriter w;
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w.write("garbage");
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fmt::format_error_code(w.buffer(), 42, "test");
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EXPECT_EQ("test: " + msg, w.str());
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}
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{
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fmt::MemoryWriter w;
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std::string prefix(
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fmt::internal::INLINE_BUFFER_SIZE - msg.size() - sep.size() + 1, 'x');
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fmt::format_error_code(w.buffer(), 42, prefix);
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EXPECT_EQ(msg, w.str());
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}
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int codes[] = {42, -1};
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for (std::size_t i = 0, n = sizeof(codes) / sizeof(*codes); i < n; ++i) {
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// Test maximum buffer size.
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msg = fmt::format("error {}", codes[i]);
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fmt::MemoryWriter w;
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std::string prefix(
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fmt::internal::INLINE_BUFFER_SIZE - msg.size() - sep.size(), 'x');
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fmt::format_error_code(w.buffer(), codes[i], prefix);
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EXPECT_EQ(prefix + sep + msg, w.str());
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std::size_t size = fmt::internal::INLINE_BUFFER_SIZE;
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EXPECT_EQ(size, w.size());
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w.clear();
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// Test with a message that doesn't fit into the buffer.
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prefix += 'x';
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fmt::format_error_code(w.buffer(), codes[i], prefix);
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EXPECT_EQ(msg, w.str());
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}
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}
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