added more elaborate unit-tests for valid? calls

tests/tests.art

@@ -16,4 +16,24 @@ loop list ./"../src/plugins" 'location [
                 not? some? plugin\test\invalid 'v run
         ]
     ]
+]
+
+import ./"../src/validator.art"!
+
+suite "Test function calls" [
+    test "single param" [
+        assert -> valid?.email "drkameleon@gmail.com"
+        assert -> valid?.url "https://arturo-lang.io"
+        assert -> not? valid?.email "drkameleon"
+        assert -> not? valid?.url "arturolang"
+    ]
+
+    test "multiple params" [
+        assert -> valid?.email ["drkameleon@gmail.com", "yaniszaf@gmail.com"]
+        assert -> valid?.url ["https://www.google.com", "https://arturo-lang.io"]
+        assert -> not? valid?.email ["drkameleon", "yaniszaf"]
+        assert -> not? valid?.email ["drkameleon@gmail.com", "yaniszaf"]
+        assert -> not? valid?.url ["google", "arturolang"]
+        assert -> not? valid?.url ["https://www.google.com", "arturolang"]
+    ]
 ]