155 lines
4.2 KiB
C++
155 lines
4.2 KiB
C++
// Formatting library for C++ - the core API
|
|
//
|
|
// Copyright (c) 2012 - present, Victor Zverovich
|
|
// All rights reserved.
|
|
//
|
|
// For the license information refer to format.h.
|
|
//
|
|
// Copyright (c) 2018 - present, Remotion (Igor Schulz)
|
|
// All Rights Reserved
|
|
// {fmt} support for ranges, containers and types tuple interface.
|
|
|
|
#include "fmt/ranges.h"
|
|
|
|
#include "gtest.h"
|
|
|
|
// Check if 'if constexpr' is supported.
|
|
#if (__cplusplus > 201402L) || \
|
|
(defined(_MSVC_LANG) && _MSVC_LANG > 201402L && _MSC_VER >= 1910)
|
|
|
|
# include <array>
|
|
# include <map>
|
|
# include <string>
|
|
# include <vector>
|
|
|
|
TEST(RangesTest, FormatVector) {
|
|
std::vector<int32_t> iv{1, 2, 3, 5, 7, 11};
|
|
auto ivf = fmt::format("{}", iv);
|
|
EXPECT_EQ("{1, 2, 3, 5, 7, 11}", ivf);
|
|
}
|
|
|
|
TEST(RangesTest, FormatVector2) {
|
|
std::vector<std::vector<int32_t>> ivv{{1, 2}, {3, 5}, {7, 11}};
|
|
auto ivf = fmt::format("{}", ivv);
|
|
EXPECT_EQ("{{1, 2}, {3, 5}, {7, 11}}", ivf);
|
|
}
|
|
|
|
TEST(RangesTest, FormatMap) {
|
|
std::map<std::string, int32_t> simap{{"one", 1}, {"two", 2}};
|
|
EXPECT_EQ("{(\"one\", 1), (\"two\", 2)}", fmt::format("{}", simap));
|
|
}
|
|
|
|
TEST(RangesTest, FormatPair) {
|
|
std::pair<int64_t, float> pa1{42, 1.5f};
|
|
EXPECT_EQ("(42, 1.5)", fmt::format("{}", pa1));
|
|
}
|
|
|
|
TEST(RangesTest, FormatTuple) {
|
|
std::tuple<int64_t, float, std::string, char> t{42, 1.5f, "this is tuple",
|
|
'i'};
|
|
EXPECT_EQ("(42, 1.5, \"this is tuple\", 'i')", fmt::format("{}", t));
|
|
EXPECT_EQ("()", fmt::format("{}", std::tuple<>()));
|
|
}
|
|
|
|
TEST(RangesTest, JoinTuple) {
|
|
// Value tuple args
|
|
std::tuple<char, int, float> t1 = std::make_tuple('a', 1, 2.0f);
|
|
EXPECT_EQ("(a, 1, 2.0)", fmt::format("({})", fmt::join(t1, ", ")));
|
|
|
|
// Testing lvalue tuple args
|
|
int x = 4;
|
|
std::tuple<char, int&> t2{'b', x};
|
|
EXPECT_EQ("b + 4", fmt::format("{}", fmt::join(t2, " + ")));
|
|
|
|
// Empty tuple
|
|
std::tuple<> t3;
|
|
EXPECT_EQ("", fmt::format("{}", fmt::join(t3, "|")));
|
|
|
|
// Single element tuple
|
|
std::tuple<float> t4{4.0f};
|
|
EXPECT_EQ("4.0", fmt::format("{}", fmt::join(t4, "/")));
|
|
}
|
|
|
|
TEST(RangesTest, JoinInitializerList) {
|
|
EXPECT_EQ("1, 2, 3", fmt::format("{}", fmt::join({1, 2, 3}, ", ")));
|
|
EXPECT_EQ("fmt rocks !",
|
|
fmt::format("{}", fmt::join({"fmt", "rocks", "!"}, " ")));
|
|
}
|
|
|
|
struct my_struct {
|
|
int32_t i;
|
|
std::string str; // can throw
|
|
template <size_t N> decltype(auto) get() const noexcept {
|
|
if constexpr (N == 0)
|
|
return i;
|
|
else if constexpr (N == 1)
|
|
return fmt::string_view{str};
|
|
}
|
|
};
|
|
|
|
template <size_t N> decltype(auto) get(const my_struct& s) noexcept {
|
|
return s.get<N>();
|
|
}
|
|
|
|
namespace std {
|
|
|
|
template <> struct tuple_size<my_struct> : std::integral_constant<size_t, 2> {};
|
|
|
|
template <size_t N> struct tuple_element<N, my_struct> {
|
|
using type = decltype(std::declval<my_struct>().get<N>());
|
|
};
|
|
|
|
} // namespace std
|
|
|
|
TEST(RangesTest, FormatStruct) {
|
|
my_struct mst{13, "my struct"};
|
|
EXPECT_EQ("(13, \"my struct\")", fmt::format("{}", mst));
|
|
}
|
|
|
|
TEST(RangesTest, FormatTo) {
|
|
char buf[10];
|
|
auto end = fmt::format_to(buf, "{}", std::vector{1, 2, 3});
|
|
*end = '\0';
|
|
EXPECT_STREQ(buf, "{1, 2, 3}");
|
|
}
|
|
|
|
struct path_like {
|
|
const path_like* begin() const;
|
|
const path_like* end() const;
|
|
|
|
operator std::string() const;
|
|
};
|
|
|
|
TEST(RangesTest, PathLike) {
|
|
EXPECT_FALSE((fmt::is_range<path_like, char>::value));
|
|
}
|
|
|
|
#endif // (__cplusplus > 201402L) || (defined(_MSVC_LANG) && _MSVC_LANG >
|
|
// 201402L && _MSC_VER >= 1910)
|
|
|
|
#ifdef FMT_USE_STRING_VIEW
|
|
struct string_like {
|
|
const char* begin();
|
|
const char* end();
|
|
explicit operator fmt::string_view() const { return "foo"; }
|
|
explicit operator std::string_view() const { return "foo"; }
|
|
};
|
|
|
|
TEST(RangesTest, FormatStringLike) {
|
|
EXPECT_EQ("foo", fmt::format("{}", string_like()));
|
|
}
|
|
#endif // FMT_USE_STRING_VIEW
|
|
|
|
struct zstring_sentinel {};
|
|
bool operator==(const char* p, zstring_sentinel) { return *p == '\0'; }
|
|
bool operator!=(const char* p, zstring_sentinel) { return *p != '\0'; }
|
|
struct zstring {
|
|
const char* p;
|
|
const char* begin() const { return p; }
|
|
zstring_sentinel end() const { return {}; }
|
|
};
|
|
TEST(RangesTest, JoinSentinel) {
|
|
zstring hello{"hello"};
|
|
EXPECT_EQ("{'h', 'e', 'l', 'l', 'o'}", fmt::format("{}", hello));
|
|
EXPECT_EQ("h_e_l_l_o", fmt::format("{}", fmt::join(hello, "_")));
|
|
}
|