1/*
2 Tests of variadic function emulation macros.
3
4 Copyright (c) 2012-2014, Victor Zverovich
5 All rights reserved.
6
7 Redistribution and use in source and binary forms, with or without
8 modification, are permitted provided that the following conditions are met:
9
10 1. Redistributions of source code must retain the above copyright notice, this
11    list of conditions and the following disclaimer.
12 2. Redistributions in binary form must reproduce the above copyright notice,
13    this list of conditions and the following disclaimer in the documentation
14    and/or other materials provided with the distribution.
15
16 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
17 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
20 ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28#include <utility>
29#include <gtest/gtest.h>
30
31#define FMT_USE_VARIADIC_TEMPLATES 0
32#include "fmt/format.h"
33
34#define IDENTITY(x) x
35
36TEST(UtilTest, Gen) {
37  int values[] = {FMT_GEN(10, IDENTITY)};
38  for (int i = 0; i < 10; ++i)
39    EXPECT_EQ(i, values[i]);
40}
41
42#define MAKE_PAIR(x, y) std::make_pair(x, y)
43
44TEST(UtilTest, ForEach) {
45  std::pair<char, int> values[] = {
46      FMT_FOR_EACH10(MAKE_PAIR, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j')
47  };
48  for (int i = 0; i < 10; ++i) {
49    EXPECT_EQ('a' + i, values[i].first);
50    EXPECT_EQ(i, values[i].second);
51  }
52}
53
54TEST(UtilTest, NArg) {
55  EXPECT_EQ(1, FMT_NARG(a));
56  EXPECT_EQ(2, FMT_NARG(a, b));
57  EXPECT_EQ(3, FMT_NARG(a, b, c));
58  EXPECT_EQ(4, FMT_NARG(a, b, c, d));
59  EXPECT_EQ(5, FMT_NARG(a, b, c, d, e));
60  EXPECT_EQ(6, FMT_NARG(a, b, c, d, e, f));
61  EXPECT_EQ(7, FMT_NARG(a, b, c, d, e, f, g));
62  EXPECT_EQ(8, FMT_NARG(a, b, c, d, e, f, g, h));
63  EXPECT_EQ(9, FMT_NARG(a, b, c, d, e, f, g, h, i));
64  EXPECT_EQ(10, FMT_NARG(a, b, c, d, e, f, g, h, i, j));
65}
66
67int result;
68
69#define MAKE_TEST(func) \
70  void func(const char *, const fmt::ArgList &args) { \
71    result = 0; \
72    for (unsigned i = 0; args[i].type; ++i) \
73      result += args[i].int_value; \
74  }
75
76MAKE_TEST(test_func)
77
78typedef char Char;
79FMT_WRAP1(test_func, const char *, 1)
80
81TEST(UtilTest, Wrap1) {
82  result = 0;
83  test_func("", 42);
84  EXPECT_EQ(42, result);
85}
86
87MAKE_TEST(test_variadic_void)
88FMT_VARIADIC_VOID(test_variadic_void, const char *)
89
90TEST(UtilTest, VariadicVoid) {
91  result = 0;
92  test_variadic_void("", 10, 20, 30, 40, 50, 60, 70, 80, 90, 100);
93  EXPECT_EQ(550, result);
94}
95
96template <int>
97struct S {};
98
99#define GET_TYPE(n) S<n>
100
101int test_variadic(FMT_GEN(10, GET_TYPE), const fmt::ArgList &args) { \
102  int result = 0; \
103  for (unsigned i = 0; args[i].type; ++i) \
104    result += args[i].int_value; \
105  return result;
106}
107FMT_VARIADIC(int, test_variadic,
108    S<0>, S<1>, S<2>, S<3>, S<4>, S<5>, S<6>, S<7>, S<8>, S<9>)
109
110#define MAKE_ARG(n) S<n>()
111
112TEST(UtilTest, Variadic) {
113  EXPECT_EQ(550, test_variadic(FMT_GEN(10, MAKE_ARG),
114      10, 20, 30, 40, 50, 60, 70, 80, 90, 100));
115}
116