119 lines
3.6 KiB
C++
119 lines
3.6 KiB
C++
// Formatting library for C++ - formatting library implementation tests
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//
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// Copyright (c) 2012 - present, Victor Zverovich
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// All rights reserved.
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//
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// For the license information refer to format.h.
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#define FMT_NOEXCEPT
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#undef FMT_SHARED
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#include "test-assert.h"
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// Include format.cc instead of format.h to test implementation.
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#include "../src/format.cc"
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#include "fmt/printf.h"
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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: fmt::internal::function<T> {
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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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long long value = std::numeric_limits<long long>::max();
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auto arg = fmt::internal::make_arg<fmt::context>(value);
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visit(fmt::internal::arg_converter<long long, fmt::context>(arg, 'd'), arg);
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EXPECT_EQ(value, visit(ValueExtractor<long long>(), 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::memory_buffer buffer;
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format_to(buffer, "garbage");
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fmt::format_error_code(buffer, 42, "test");
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EXPECT_EQ("test: " + msg, to_string(buffer));
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}
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{
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fmt::memory_buffer buffer;
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std::string prefix(
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fmt::inline_buffer_size - msg.size() - sep.size() + 1, 'x');
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fmt::format_error_code(buffer, 42, prefix);
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EXPECT_EQ(msg, to_string(buffer));
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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::memory_buffer buffer;
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std::string prefix(
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fmt::inline_buffer_size - msg.size() - sep.size(), 'x');
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fmt::format_error_code(buffer, codes[i], prefix);
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EXPECT_EQ(prefix + sep + msg, to_string(buffer));
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std::size_t size = fmt::inline_buffer_size;
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EXPECT_EQ(size, buffer.size());
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buffer.resize(0);
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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(buffer, codes[i], prefix);
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EXPECT_EQ(msg, to_string(buffer));
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}
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}
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