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691a7a91a1
* Add a _lot_ more warnings to FMT_PEDANTIC Fix these warnings * Add more compilers to CI Fix (some) of the compiler errors with them * Enable -Werror on CI Increase warning level on MSVC when compiling with FMT_PEDANTIC * Add VS 2013 and 2015 to Appveyor * Fix Appveyor tests Formatting * Implement requested changes Fix some of the MSVC warnings Implement C++11 integer_sequence * Reintroduce appveyor-build.py * Remove ranges-test from tests * Remove (some) explicit warning suppressions Fix C++ standard setting in CI * Remove (some) explicit warning suppressions Fix C++ standard setting in CI * Fix test builds with C++11 * Enable pedantic warnings on tests * Fix warnings from edits to master * Cleanups * Add C++11 support to ranges.h Re-enable ranges-test Fix a Visual Studio error about function not returning a value in printf.h Fix a bug in .travis.yml
55 lines
1.6 KiB
C++
55 lines
1.6 KiB
C++
// Formatting library for C++ - custom argument formatter 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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#include "fmt/format.h"
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#include "gtest-extra.h"
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// A custom argument formatter that doesn't print `-` for floating-point values
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// rounded to 0.
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class custom_arg_formatter :
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public fmt::arg_formatter<fmt::back_insert_range<fmt::internal::buffer>> {
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public:
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typedef fmt::back_insert_range<fmt::internal::buffer> range;
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typedef fmt::arg_formatter<range> base;
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custom_arg_formatter(fmt::format_context &ctx, fmt::format_specs &s)
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: base(ctx, s) {}
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using base::operator();
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iterator operator()(double value) {
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#if FMT_GCC_VERSION
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wfloat-equal"
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#endif
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// Comparing a float to 0.0 is safe
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if (round(value * pow(10, spec().precision())) == 0.0)
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value = 0;
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return base::operator()(value);
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#if FMT_GCC_VERSION
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#pragma GCC diagnostic pop
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#endif
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}
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};
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static std::string custom_vformat(fmt::string_view format_str, fmt::format_args args) {
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fmt::memory_buffer buffer;
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// Pass custom argument formatter as a template arg to vwrite.
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fmt::vformat_to<custom_arg_formatter>(buffer, format_str, args);
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return std::string(buffer.data(), buffer.size());
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}
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template <typename... Args>
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std::string custom_format(const char *format_str, const Args & ... args) {
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auto va = fmt::make_format_args(args...);
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return custom_vformat(format_str, va);
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}
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TEST(CustomFormatterTest, Format) {
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EXPECT_EQ("0.00", custom_format("{:.2f}", -.00001));
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}
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