Merge pull request #81 from jg-rp/literal-comparison

Test that filter expression literals must be compared

tests/filter.json

@@ -956,6 +956,66 @@
       "selector" : "$[?@ == \"quoted\\\" literal\"]",
       "document" : ["quoted\" literal", "a", "quoted\\\" literal", "'quoted\" literal'"],
       "result": ["quoted\" literal"]
+    },
+    {
+      "name": "literal true must be compared",
+      "selector" : "$[?true]",
+      "invalid_selector": true
+    },
+    {
+      "name": "literal false must be compared",
+      "selector" : "$[?false]",
+      "invalid_selector": true
+    },
+    {
+      "name": "literal string must be compared",
+      "selector" : "$[?'abc']",
+      "invalid_selector": true
+    },
+    {
+      "name": "literal int must be compared",
+      "selector" : "$[?2]",
+      "invalid_selector": true
+    },
+    {
+      "name": "literal float must be compared",
+      "selector" : "$[?2.2]",
+      "invalid_selector": true
+    },
+    {
+      "name": "literal null must be compared",
+      "selector" : "$[?null]",
+      "invalid_selector": true
+    },
+    {
+      "name": "and, literals must be compared",
+      "selector" : "$[?true && false]",
+      "invalid_selector": true
+    },
+    {
+      "name": "or, literals must be compared",
+      "selector" : "$[?true || false]",
+      "invalid_selector": true
+    },
+    {
+      "name": "and, right hand literal must be compared",
+      "selector" : "$[?true == false && false]",
+      "invalid_selector": true
+    },
+    {
+      "name": "or, right hand literal must be compared",
+      "selector" : "$[?true == false || false]",
+      "invalid_selector": true
+    },
+    {
+      "name": "and, left hand literal must be compared",
+      "selector" : "$[?false && true == false]",
+      "invalid_selector": true
+    },
+    {
+      "name": "or, left hand literal must be compared",
+      "selector" : "$[?false || true == false]",
+      "invalid_selector": true
     }
   ]
 }