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unit: add linear mapping test

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James Prestwood 2024-11-19 06:24:24 -08:00 committed by Denis Kenzior
parent bb57d61add
commit c40e665094
1 changed files with 70 additions and 0 deletions
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70
unit/test-util.c
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@ -184,6 +184,75 @@ static void ip_prefix_test(const void *data)
}
}
struct linear_map_case {
double value;
double a_start;
double a_end;
double b_start;
double b_end;
double expected;
bool fails : 1;
};
struct linear_map_case cases[] = {
/* Value out of range */
{
.value = 100,
.a_start = 1,
.a_end = 3,
.b_start = 10,
.b_end = 12,
.fails = true,
},
/* Ascending start range */
{
.value = 1,
.a_start = 0,
.a_end = 2,
.b_start = 10,
.b_end = 12,
.expected = 11,
},
/* Descending start range */
{
.value = 1,
.a_start = 2,
.a_end = 0,
.b_start = 10,
.b_end = 12,
.expected = 11,
},
/* Negatives */
{
.value = -1,
.a_start = -2,
.a_end = 0,
.b_start = 0,
.b_end = 2,
.expected = 1,
},
};
static void test_linear_map(const void *data)
{
double mapped;
unsigned int i;
for (i = 0; i < L_ARRAY_SIZE(cases); i++) {
struct linear_map_case *c = &cases[i];
bool ret = util_linear_map(c->value, c->a_start, c->a_end,
c->b_start, c->b_end, &mapped);
if (c->fails) {
assert(ret == false);
continue;
}
assert(ret);
assert(mapped == c->expected);
}
}
int main(int argc, char *argv[])
{
l_test_init(&argc, &argv);
@ -192,6 +261,7 @@ int main(int argc, char *argv[])
l_test_add("/util/get_domain/", get_domain_test, NULL);
l_test_add("/util/get_username/", get_username_test, NULL);
l_test_add("/util/ip_prefix/", ip_prefix_test, NULL);
l_test_add("/util/test_linear_map", test_linear_map, NULL);
return l_test_run();
}