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11fdf7f2 TL |
1 | // Formatting library for C++ - the core API |
2 | // | |
3 | // Copyright (c) 2012 - present, Victor Zverovich | |
4 | // All rights reserved. | |
5 | // | |
6 | // For the license information refer to format.h. | |
7 | // | |
8 | // Copyright (c) 2018 - present, Remotion (Igor Schulz) | |
9 | // All Rights Reserved | |
10 | // {fmt} support for ranges, containers and types tuple interface. | |
11 | ||
11fdf7f2 TL |
12 | /// Check if 'if constexpr' is supported. |
13 | #if (__cplusplus > 201402L) || \ | |
14 | (defined(_MSVC_LANG) && _MSVC_LANG > 201402L && _MSC_VER >= 1910) | |
15 | ||
eafe8130 | 16 | #include "fmt/ranges.h" |
11fdf7f2 TL |
17 | #include "gtest.h" |
18 | ||
19 | #include <vector> | |
20 | #include <array> | |
21 | #include <map> | |
22 | #include <string> | |
23 | ||
24 | TEST(RangesTest, FormatVector) { | |
25 | std::vector<int32_t> iv{1, 2, 3, 5, 7, 11}; | |
26 | auto ivf = fmt::format("{}", iv); | |
27 | EXPECT_EQ("{1, 2, 3, 5, 7, 11}", ivf); | |
28 | } | |
29 | ||
30 | TEST(RangesTest, FormatVector2) { | |
31 | std::vector<std::vector<int32_t>> ivv{{1, 2}, {3, 5}, {7, 11}}; | |
32 | auto ivf = fmt::format("{}", ivv); | |
33 | EXPECT_EQ("{{1, 2}, {3, 5}, {7, 11}}", ivf); | |
34 | } | |
35 | ||
36 | TEST(RangesTest, FormatMap) { | |
37 | std::map<std::string, int32_t> simap{{"one", 1}, {"two", 2}}; | |
38 | EXPECT_EQ("{(\"one\", 1), (\"two\", 2)}", fmt::format("{}", simap)); | |
39 | } | |
40 | ||
41 | TEST(RangesTest, FormatPair) { | |
42 | std::pair<int64_t, float> pa1{42, 3.14159265358979f}; | |
43 | EXPECT_EQ("(42, 3.14159)", fmt::format("{}", pa1)); | |
44 | } | |
45 | ||
46 | TEST(RangesTest, FormatTuple) { | |
47 | std::tuple<int64_t, float, std::string, char> tu1{42, 3.14159265358979f, | |
48 | "this is tuple", 'i'}; | |
49 | EXPECT_EQ("(42, 3.14159, \"this is tuple\", 'i')", fmt::format("{}", tu1)); | |
50 | } | |
51 | ||
52 | struct my_struct { | |
53 | int32_t i; | |
54 | std::string str; // can throw | |
55 | template <std::size_t N> | |
56 | decltype(auto) get() const noexcept { | |
57 | if constexpr (N == 0) | |
58 | return i; | |
59 | else if constexpr (N == 1) | |
60 | return fmt::string_view{str}; | |
61 | } | |
62 | }; | |
63 | ||
64 | template <std::size_t N> | |
65 | decltype(auto) get(const my_struct& s) noexcept { | |
66 | return s.get<N>(); | |
67 | } | |
68 | ||
69 | namespace std { | |
70 | ||
71 | template <> | |
72 | struct tuple_size<my_struct> : std::integral_constant<std::size_t, 2> {}; | |
73 | ||
74 | template <std::size_t N> | |
75 | struct tuple_element<N, my_struct> { | |
76 | using type = decltype(std::declval<my_struct>().get<N>()); | |
77 | }; | |
78 | ||
79 | } // namespace std | |
80 | ||
81 | TEST(RangesTest, FormatStruct) { | |
82 | my_struct mst{13, "my struct"}; | |
83 | EXPECT_EQ("(13, \"my struct\")", fmt::format("{}", mst)); | |
84 | } | |
85 | ||
86 | #endif // (__cplusplus > 201402L) || (defined(_MSVC_LANG) && _MSVC_LANG > | |
87 | // 201402L && _MSC_VER >= 1910) |