1 /*
2  *
3  * MINCTEST - Minimal C Test Library - 0.1
4  *
5  * Copyright (c) 2014, 2015 Lewis Van Winkle
6  *
7  * http://CodePlea.com
8  *
9  * This software is provided 'as-is', without any express or implied
10  * warranty. In no event will the authors be held liable for any damages
11  * arising from the use of this software.
12  *
13  * Permission is granted to anyone to use this software for any purpose,
14  * including commercial applications, and to alter it and redistribute it
15  * freely, subject to the following restrictions:
16  *
17  * 1. The origin of this software must not be misrepresented; you must not
18  *    claim that you wrote the original software. If you use this software
19  *    in a product, an acknowledgement in the product documentation would be
20  *    appreciated but is not required.
21  * 2. Altered source versions must be plainly marked as such, and must not be
22  *    misrepresented as being the original software.
23  * 3. This notice may not be removed or altered from any source distribution.
24  *
25  */
26 
27 
28 
29 /*
30  * MINCTEST - Minimal testing library for C
31  *
32  *
33  * Example:
34  *
35  *      void test1() {
36  *           lok('a' == 'a');
37  *      }
38  *
39  *      void test2() {
40  *           lequal(5, 6);
41  *           lfequal(5.5, 5.6);
42  *      }
43  *
44  *      int main() {
45  *           lrun("test1", test1);
46  *           lrun("test2", test2);
47  *           lresults();
48  *           return lfails != 0;
49  *      }
50  *
51  *
52  *
53  * Hints:
54  *      All functions/variables start with the letter 'l'.
55  *
56  */
57 
58 
59 #ifndef __MINCTEST_H__
60 #define __MINCTEST_H__
61 
62 #include <stdio.h>
63 #include <math.h>
64 #include <time.h>
65 
66 
67 /* How far apart can floats be before we consider them unequal. */
68 #define LTEST_FLOAT_TOLERANCE 0.001
69 
70 
71 /* Track the number of passes, fails. */
72 /* NB this is made for all tests to be in one file. */
73 static int ltests = 0;
74 static int lfails = 0;
75 
76 
77 /* Display the test results. */
78 #define lresults() do {\
79     if (lfails == 0) {\
80         printf("ALL TESTS PASSED (%d/%d)\n", ltests, ltests);\
81     } else {\
82         printf("SOME TESTS FAILED (%d/%d)\n", ltests-lfails, ltests);\
83     }\
84 } while (0)
85 
86 
87 /* Run a test. Name can be any string to print out, test is the function name to call. */
88 #define lrun(name, test) do {\
89     const int ts = ltests;\
90     const int fs = lfails;\
91     const clock_t start = clock();\
92     printf("\t%-14s", name);\
93     test();\
94     printf("pass:%2d   fail:%2d   %4dms\n",\
95             (ltests-ts)-(lfails-fs), lfails-fs,\
96             (int)((clock() - start) * 1000 / CLOCKS_PER_SEC));\
97 } while (0)
98 
99 
100 /* Assert a true statement. */
101 #define lok(test) do {\
102     ++ltests;\
103     if (!(test)) {\
104         ++lfails;\
105         printf("%s:%d error \n", __FILE__, __LINE__);\
106     }} while (0)
107 
108 
109 /* Assert two integers are equal. */
110 #define lequal(a, b) do {\
111     ++ltests;\
112     if ((a) != (b)) {\
113         ++lfails;\
114         printf("%s:%d (%d != %d)\n", __FILE__, __LINE__, (a), (b));\
115     }} while (0)
116 
117 
118 /* Assert two floats are equal (Within LTEST_FLOAT_TOLERANCE). */
119 #define lfequal(a, b) do {\
120     ++ltests;\
121     const double __LF_COMPARE = fabs((double)(a)-(double)(b));\
122     if (__LF_COMPARE > LTEST_FLOAT_TOLERANCE || (__LF_COMPARE != __LF_COMPARE)) {\
123         ++lfails;\
124         printf("%s:%d (%f != %f)\n", __FILE__, __LINE__, (double)(a), (double)(b));\
125     }} while (0)
126 
127 
128 #endif /*__MINCTEST_H__*/
129