mirror of
https://github.com/shadps4-emu/ext-fmt.git
synced 2024-12-12 12:25:42 +00:00
299 lines
9.1 KiB
C++
299 lines
9.1 KiB
C++
// Formatting library for C++ - std::ostream support 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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using fmt::runtime;
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struct test {};
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// Test that there is no issues with specializations when fmt/ostream.h is
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// included after fmt/format.h.
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namespace fmt {
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template <> struct formatter<test> : formatter<int> {
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auto format(const test&, format_context& ctx) -> decltype(ctx.out()) {
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return formatter<int>::format(42, ctx);
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}
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};
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} // namespace fmt
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#include <sstream>
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#include "fmt/compile.h"
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#include "fmt/ostream.h"
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#include "fmt/ranges.h"
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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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std::ostream& operator<<(std::ostream& os, const date& d) {
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os << d.year() << '-' << d.month() << '-' << d.day();
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return os;
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}
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std::wostream& operator<<(std::wostream& os, const date& d) {
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os << d.year() << L'-' << d.month() << L'-' << d.day();
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return os;
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}
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// Make sure that overloaded comma operators do no harm to is_streamable.
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struct type_with_comma_op {};
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template <typename T> void operator,(type_with_comma_op, const T&);
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template <typename T> type_with_comma_op operator<<(T&, const date&);
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enum streamable_enum {};
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std::ostream& operator<<(std::ostream& os, streamable_enum) {
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return os << "streamable_enum";
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}
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enum unstreamable_enum {};
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struct empty_test {};
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std::ostream& operator<<(std::ostream& os, empty_test) { return os << ""; }
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namespace fmt {
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template <> struct formatter<test_string> : ostream_formatter {};
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template <> struct formatter<date> : ostream_formatter {};
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template <> struct formatter<streamable_enum> : ostream_formatter {};
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template <> struct formatter<empty_test> : ostream_formatter {};
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} // namespace fmt
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TEST(ostream_test, enum) {
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EXPECT_EQ("streamable_enum", fmt::format("{}", streamable_enum()));
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EXPECT_EQ("0", fmt::format("{}", unstreamable_enum()));
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}
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TEST(ostream_test, format) {
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EXPECT_EQ("a string", fmt::format("{0}", test_string("a string")));
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EXPECT_EQ("The date is 2012-12-9",
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fmt::format("The date is {0}", date(2012, 12, 9)));
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}
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TEST(ostream_test, format_specs) {
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using fmt::format_error;
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EXPECT_EQ("def ", fmt::format("{0:<5}", test_string("def")));
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EXPECT_EQ(" def", fmt::format("{0:>5}", test_string("def")));
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EXPECT_EQ(" def ", fmt::format("{0:^5}", test_string("def")));
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EXPECT_EQ("def**", fmt::format("{0:*<5}", test_string("def")));
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EXPECT_THROW_MSG((void)fmt::format(runtime("{0:+}"), test_string()),
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format_error, "format specifier requires numeric argument");
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EXPECT_THROW_MSG((void)fmt::format(runtime("{0:-}"), test_string()),
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format_error, "format specifier requires numeric argument");
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EXPECT_THROW_MSG((void)fmt::format(runtime("{0: }"), test_string()),
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format_error, "format specifier requires numeric argument");
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EXPECT_THROW_MSG((void)fmt::format(runtime("{0:#}"), test_string()),
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format_error, "format specifier requires numeric argument");
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EXPECT_THROW_MSG((void)fmt::format(runtime("{0:05}"), test_string()),
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format_error, "format specifier requires numeric argument");
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EXPECT_EQ("test ", fmt::format("{0:13}", test_string("test")));
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EXPECT_EQ("test ", fmt::format("{0:{1}}", test_string("test"), 13));
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EXPECT_EQ("te", fmt::format("{0:.2}", test_string("test")));
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EXPECT_EQ("te", fmt::format("{0:.{1}}", test_string("test"), 2));
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}
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TEST(ostream_test, empty_custom_output) {
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EXPECT_EQ("", fmt::format("{}", empty_test()));
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}
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TEST(ostream_test, print) {
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std::ostringstream os;
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fmt::print(os, "Don't {}!", "panic");
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EXPECT_EQ("Don't panic!", os.str());
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}
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TEST(ostream_test, write_to_ostream) {
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std::ostringstream os;
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fmt::memory_buffer buffer;
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const char* foo = "foo";
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buffer.append(foo, foo + std::strlen(foo));
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fmt::detail::write_buffer(os, buffer);
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EXPECT_EQ("foo", os.str());
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}
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TEST(ostream_test, write_to_ostream_max_size) {
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auto max_size = fmt::detail::max_value<size_t>();
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auto max_streamsize = fmt::detail::max_value<std::streamsize>();
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if (max_size <= fmt::detail::to_unsigned(max_streamsize)) return;
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struct test_buffer final : fmt::detail::buffer<char> {
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explicit test_buffer(size_t size)
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: fmt::detail::buffer<char>(nullptr, size, size) {}
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void grow(size_t) override {}
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} buffer(max_size);
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struct mock_streambuf : std::streambuf {
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MOCK_METHOD2(xsputn, std::streamsize(const void* s, std::streamsize n));
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std::streamsize xsputn(const char* s, std::streamsize n) override {
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const void* v = s;
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return xsputn(v, n);
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}
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} streambuf;
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struct test_ostream : std::ostream {
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explicit test_ostream(mock_streambuf& output_buffer)
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: std::ostream(&output_buffer) {}
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} os(streambuf);
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testing::InSequence sequence;
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const char* data = nullptr;
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using ustreamsize = std::make_unsigned<std::streamsize>::type;
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ustreamsize size = max_size;
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do {
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auto n = std::min(size, fmt::detail::to_unsigned(max_streamsize));
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EXPECT_CALL(streambuf, xsputn(data, static_cast<std::streamsize>(n)))
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.WillOnce(testing::Return(max_streamsize));
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data += n;
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size -= n;
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} while (size != 0);
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fmt::detail::write_buffer(os, buffer);
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}
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TEST(ostream_test, join) {
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int v[3] = {1, 2, 3};
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EXPECT_EQ("1, 2, 3", fmt::format("{}", fmt::join(v, v + 3, ", ")));
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}
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TEST(ostream_test, join_fallback_formatter) {
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auto strs = std::vector<test_string>{test_string("foo"), test_string("bar")};
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EXPECT_EQ("foo, bar", fmt::format("{}", fmt::join(strs, ", ")));
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}
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#if FMT_USE_CONSTEXPR
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TEST(ostream_test, constexpr_string) {
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EXPECT_EQ("42", format(FMT_STRING("{}"), std::string("42")));
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EXPECT_EQ("a string", format(FMT_STRING("{0}"), test_string("a string")));
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}
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#endif
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namespace fmt_test {
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struct abc {};
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template <typename Output> Output& operator<<(Output& out, abc) {
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return out << "abc";
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}
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} // namespace fmt_test
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template <typename T> struct test_template {};
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template <typename T>
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std::ostream& operator<<(std::ostream& os, test_template<T>) {
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return os << 1;
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}
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namespace fmt {
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template <typename T> struct formatter<test_template<T>> : formatter<int> {
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auto format(test_template<T>, format_context& ctx) -> decltype(ctx.out()) {
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return formatter<int>::format(2, ctx);
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}
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};
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template <> struct formatter<fmt_test::abc> : ostream_formatter {};
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} // namespace fmt
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TEST(ostream_test, template) {
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EXPECT_EQ("2", fmt::format("{}", test_template<int>()));
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}
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TEST(ostream_test, format_to_n) {
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char buffer[4];
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buffer[3] = 'x';
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auto result = fmt::format_to_n(buffer, 3, "{}", fmt_test::abc());
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EXPECT_EQ(3u, result.size);
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EXPECT_EQ(buffer + 3, result.out);
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EXPECT_EQ("abcx", fmt::string_view(buffer, 4));
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result = fmt::format_to_n(buffer, 3, "x{}y", fmt_test::abc());
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EXPECT_EQ(5u, result.size);
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EXPECT_EQ(buffer + 3, result.out);
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EXPECT_EQ("xabx", fmt::string_view(buffer, 4));
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}
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template <typename T> struct convertible {
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T value;
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explicit convertible(const T& val) : value(val) {}
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operator T() const { return value; }
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};
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TEST(ostream_test, disable_builtin_ostream_operators) {
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EXPECT_EQ("42", fmt::format("{:d}", convertible<unsigned short>(42)));
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EXPECT_EQ("foo", fmt::format("{}", convertible<const char*>("foo")));
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}
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struct streamable_and_convertible_to_bool {
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operator bool() const { return true; }
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};
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std::ostream& operator<<(std::ostream& os, streamable_and_convertible_to_bool) {
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return os << "foo";
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}
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TEST(ostream_test, format_convertible_to_bool) {
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// operator<< is intentionally not used because of potential ODR violations.
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EXPECT_EQ(fmt::format("{}", streamable_and_convertible_to_bool()), "true");
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}
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struct streamable_and_convertible_to_string_view {
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operator fmt::string_view() const { return "foo"; }
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};
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std::ostream& operator<<(std::ostream& os,
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streamable_and_convertible_to_string_view) {
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return os << "bar";
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}
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TEST(ostream_test, format_convertible_to_string_vew) {
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// operator<< is intentionally not used because of potential ODR violations.
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EXPECT_EQ(fmt::format("{}", streamable_and_convertible_to_string_view()),
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"foo");
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}
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struct copyfmt_test {};
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std::ostream& operator<<(std::ostream& os, copyfmt_test) {
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std::ios ios(nullptr);
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ios.copyfmt(os);
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return os << "foo";
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}
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namespace fmt {
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template <> struct formatter<copyfmt_test> : ostream_formatter {};
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} // namespace fmt
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TEST(ostream_test, copyfmt) {
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EXPECT_EQ("foo", fmt::format("{}", copyfmt_test()));
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}
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TEST(ostream_test, to_string) {
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EXPECT_EQ("abc", fmt::to_string(fmt_test::abc()));
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}
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TEST(ostream_test, range) {
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auto strs = std::vector<test_string>{test_string("foo"), test_string("bar")};
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EXPECT_EQ("[foo, bar]", fmt::format("{}", strs));
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}
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struct abstract {
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virtual ~abstract() = default;
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virtual void f() = 0;
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friend std::ostream& operator<<(std::ostream& os, const abstract&) {
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return os;
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}
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};
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namespace fmt {
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template <> struct formatter<abstract> : ostream_formatter {};
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} // namespace fmt
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void format_abstract_compiles(const abstract& a) {
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fmt::format(FMT_COMPILE("{}"), a);
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}
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TEST(ostream_test, is_formattable) {
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EXPECT_TRUE(fmt::is_formattable<std::string>());
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EXPECT_TRUE(fmt::is_formattable<fmt::detail::std_string_view<char>>());
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}
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