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 36 TEST(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 44 TEST(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 54 TEST(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 67 int 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 76 MAKE_TEST(test_func) 77 78 typedef char Char; 79 FMT_WRAP1(test_func, const char *, 1) 80 81 TEST(UtilTest, Wrap1) { 82 result = 0; 83 test_func("", 42); 84 EXPECT_EQ(42, result); 85 } 86 87 MAKE_TEST(test_variadic_void) 88 FMT_VARIADIC_VOID(test_variadic_void, const char *) 89 90 TEST(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 96 template <int> 97 struct S {}; 98 99 #define GET_TYPE(n) S<n> 100 101 int 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 } 107 FMT_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>() 111 112 TEST(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
