+static void test_dns_name_compare_func(void) {
+ assert_se(dns_name_compare_func("", "") == 0);
+ assert_se(dns_name_compare_func("", ".") == 0);
+ assert_se(dns_name_compare_func(".", "") == 0);
+ assert_se(dns_name_compare_func("foo", "foo.") == 0);
+ assert_se(dns_name_compare_func("foo.", "foo") == 0);
+ assert_se(dns_name_compare_func("foo", "foo") == 0);
+ assert_se(dns_name_compare_func("foo.", "foo.") == 0);
+ assert_se(dns_name_compare_func("heise.de", "HEISE.DE.") == 0);
+
+ assert_se(dns_name_compare_func("de.", "heise.de") != 0);
+}
+
+static void test_dns_name_common_suffix_one(const char *a, const char *b, const char *result) {
+ const char *c;
+
+ assert_se(dns_name_common_suffix(a, b, &c) >= 0);
+ assert_se(streq(c, result));
+}
+
+static void test_dns_name_common_suffix(void) {
+ test_dns_name_common_suffix_one("", "", "");
+ test_dns_name_common_suffix_one("foo", "", "");
+ test_dns_name_common_suffix_one("", "foo", "");
+ test_dns_name_common_suffix_one("foo", "bar", "");
+ test_dns_name_common_suffix_one("bar", "foo", "");
+ test_dns_name_common_suffix_one("foo", "foo", "foo");
+ test_dns_name_common_suffix_one("quux.foo", "foo", "foo");
+ test_dns_name_common_suffix_one("foo", "quux.foo", "foo");
+ test_dns_name_common_suffix_one("this.is.a.short.sentence", "this.is.another.short.sentence", "short.sentence");
+ test_dns_name_common_suffix_one("FOO.BAR", "tEST.bAR", "BAR");
+}
+
+static void test_dns_name_apply_idna_one(const char *s, const char *result) {
+#ifdef HAVE_LIBIDN
+ _cleanup_free_ char *buf = NULL;
+ assert_se(dns_name_apply_idna(s, &buf) >= 0);
+ assert_se(dns_name_equal(buf, result) > 0);
+#endif
+}
+
+static void test_dns_name_apply_idna(void) {
+ test_dns_name_apply_idna_one("", "");
+ test_dns_name_apply_idna_one("foo", "foo");
+ test_dns_name_apply_idna_one("foo.", "foo");
+ test_dns_name_apply_idna_one("foo.bar", "foo.bar");
+ test_dns_name_apply_idna_one("foo.bar.", "foo.bar");
+ test_dns_name_apply_idna_one("föö", "xn--f-1gaa");
+ test_dns_name_apply_idna_one("föö.", "xn--f-1gaa");
+ test_dns_name_apply_idna_one("föö.bär", "xn--f-1gaa.xn--br-via");
+ test_dns_name_apply_idna_one("föö.bär.", "xn--f-1gaa.xn--br-via");
+}
+