new tester; all tests categorized

tests/lookups/tkoeniglookup.nim

@@ -0,0 +1,17 @@
+discard """
+  output: '''x: 0 y: 0'''
+"""
+
+proc ToString*[T](x: T): string = return $x
+
+
+type
+  TMyObj = object
+    x, y: int
+
+proc `$`*(a: TMyObj): string = 
+  result = "x: " & $a.x & " y: " & $a.y
+
+var a: TMyObj
+echo toString(a)
+