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-rw-r--r--strreqlen.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/strreqlen.c b/strreqlen.c
index 29f85fc..5c7cece 100644
--- a/strreqlen.c
+++ b/strreqlen.c
@@ -12,6 +12,25 @@ extern inline size_t libsimple_strreqlen(const char *, const char *);
int
main(void)
{
+ size_t i, j;
+ char a[] = "abcdefgh", b[] = "abcdefgh";
+
+ assert(libsimple_strreqlen("", "") == 0);
+ assert(libsimple_strreqlen("x", "") == 0);
+ assert(libsimple_strreqlen("x", "y") == 0);
+ assert(libsimple_strreqlen("", "y") == 0);
+ for (i = 0; i <= 8; i++) {
+ for (j = 0; j <= 8; j++) {
+ assert(libsimple_strreqlen(&a[i], &b[j]) == 8 - (i > j ? i : j));
+ a[i] = b[j] = '\0';
+ assert(libsimple_strreqlen(a, b) == (i == j ? i : 0));
+ a[i] = "abcdefgh"[i];
+ b[j] = "abcdefgh"[j];
+ }
+ }
+ assert(libsimple_strreqlen("abc", "ABC") == 0);
+ assert(libsimple_strreqlen("123", "123") == 3);
+
return 0;
}