add true/TRUE test case

Author: safareli

test/src/Parse.purs

@@ -67,6 +67,14 @@ testSuite1 = do
     SELECT * FROM `/smallZips.json` WHERE city IS null
   """
 
+  parseSucc """
+    SELECT * FROM `/smallZips.json` WHERE city IS true
+  """
+
+  parseSucc """
+    SELECT * FROM `/smallZips.json` WHERE city IS TRUE
+  """
+
   parseSucc """
     SELECT * FROM `/smallZips.json` WHERE city IS NULL
   """