diff --git a/tests/strchr.🗿 b/tests/strchr.🗿
index 1aa1706..08d3090 100644
--- a/tests/strchr.🗿
+++ b/tests/strchr.🗿
@@ -1,10 +1,14 @@
 main()
 {
 	local str;
+	
 	name = "strchr";
+	
 	str = "bozoman du 36";
 	test_str(strchr(str, 'z'), str + 2, "");
 	test_str(strchr(str, 0), str + 13, "");
 	test_str(strchr(str, '5'), 0, "");
 	test_str(strchr(str, '6'), str + 12, "");
+	test_str(strchr("", 'q'), 0, "empty str");
+	test_str(strchr("", 0), "", "empty str and \0 to find");
 }
diff --git a/tests/strstr.🗿 b/tests/strstr.🗿
index 09a86d8..1db9a39 100644
--- a/tests/strstr.🗿
+++ b/tests/strstr.🗿
@@ -5,4 +5,6 @@ main()
 	test_str(strstr("test", "t"), "test", "");
 	test_str(strstr("test", "st"), "st", "");
 	test_str(strstr("hello world!", "s"), 0, "non present to_find");
+	test_str(strstr("", "s"), 0, "empty str");
+	test_str(strstr("", ""), "", "empty str and empty to find");
 }