bug-2803.c revision 293896 
1#include <config.h>
2
3#include <stdio.h>
4#include <sys/time.h>
5
6#include <ntp_fp.h>
7#include <timevalops.h>
8
9#include "unity.h"
10//#include "bug-2803.h"
11
12/* microseconds per second */
13#define MICROSECONDS 1000000
14
15int simpleTest(void);
16void setUp(void);
17void tearDown(void);
18void test_main(void);
19
20static int verbose = 1;        // if not 0, also print results if test passed
21static int exit_on_err = 0;    // if not 0, exit if test failed
22
23
24/*
25 * Test function calling the old and new code mentioned in
26 * http://bugs.ntp.org/show_bug.cgi?id=2803#c22
27 */
28static int do_test( struct timeval timetv, struct timeval tvlast )
29{
30	struct timeval tvdiff_old;
31	struct timeval tvdiff_new;
32
33	int cond_old;
34	int cond_new;
35	int failed;
36
37	cond_old = 0;
38	cond_new = 0;
39
40	// Here is the old code:
41	tvdiff_old = abs_tval(sub_tval(timetv, tvlast));
42	if (tvdiff_old.tv_sec > 0) {
43		cond_old = 1;
44	}
45
46	// Here is the new code:
47	tvdiff_new = sub_tval(timetv, tvlast);
48	if (tvdiff_new.tv_sec != 0) {
49		cond_new = 1;
50	}
51
52	failed = cond_new != cond_old;
53
54	if ( failed || verbose )
55		printf( "timetv %lli|%07li, tvlast  %lli|%07li: tvdiff_old: %lli|%07li -> %i, tvdiff_new: %lli|%07li -> %i, same cond: %s\n",
56			(long long) timetv.tv_sec, timetv.tv_usec,
57			(long long) tvlast.tv_sec, tvlast.tv_usec,
58			(long long) tvdiff_old.tv_sec, tvdiff_old.tv_usec, cond_old,
59			(long long) tvdiff_new.tv_sec, tvdiff_new.tv_usec, cond_new,
60			failed ? "NO <<" : "yes" );
61
62	return failed ? -1 : 0;
63}
64
65
66
67/*
68 * Call the test function in a loop for a given set of parameters.
69 * Both timetv and tvlast iterate over the given range, in all combinations.
70 */
71static
72int test_loop( long long start_sec, long start_usec,
73	       long long stop_sec, long stop_usec,
74	       long long step_sec, long step_usec )
75{
76	struct timeval timetv;
77	struct timeval tvlast;
78
79	for ( timetv.tv_sec = start_sec; timetv.tv_sec <= stop_sec; timetv.tv_sec += step_sec )
80	  for ( timetv.tv_usec = start_usec; timetv.tv_usec <= stop_usec; timetv.tv_usec += step_usec )
81	    for ( tvlast.tv_sec = start_sec; tvlast.tv_sec <= stop_sec; tvlast.tv_sec += step_sec )
82	      for ( tvlast.tv_usec = start_usec; tvlast.tv_usec <= stop_usec; tvlast.tv_usec += step_usec )
83	      {
84		int rc = do_test( timetv, tvlast );
85		if (rc < 0 && exit_on_err )
86			return rc;
87	      }
88
89	return 0;
90}
91
92
93
94int simpleTest( void )
95{
96	int x;
97	// loop from {0.0} to {1.1000000} stepping by tv_sec by 1 and tv_usec by 100000
98	x = test_loop( 0, 0,   1,  MICROSECONDS,   1,  MICROSECONDS / 10 );
99
100	// x = test_loop( 0, 0,   5,  MICROSECONDS,   1,  MICROSECONDS / 1000 );
101	// x = test_loop( 0, 0,  -5, -MICROSECONDS,  -1, -MICROSECONDS / 1000 );
102
103	return x;
104}
105
106
107
108
109
110void setUp(void)
111{
112
113}
114
115void tearDown(void)
116{
117}
118
119
120void test_main( void )
121{
122	TEST_ASSERT_EQUAL(0, simpleTest());
123}
124