add some tests

json-path/src/test/java/com/jayway/jsonpath/FilterTest.java

@@ -1,5 +1,7 @@
 package com.jayway.jsonpath;
 
+import net.minidev.json.parser.JSONParser;
+
 import org.junit.Test;
 
 import java.util.Collections;
@@ -383,4 +385,40 @@ public class FilterTest {
             assertEquals(1, res.get(0).intValue());
         }
         
+        @Test
+        public void filters_can_contain_json_path_expressions() throws Exception {
+            Object doc = JsonModel.model(DOCUMENT).getJsonObject();
+          
+            assertTrue(filter(where("$.store..price").gt(10)).accept(doc));
+            assertFalse(filter(where("$.store..price").gte(100)).accept(doc));
+            assertTrue(filter(where("$.store..category").ne("fiction")).accept(doc));
+            assertFalse(filter(where("$.store.bicycle.color").ne("red")).accept(doc));
+            assertTrue(filter(where("$.store.bicycle.color").ne("blue")).accept(doc));
+            assertTrue(filter(where("$.store..color").exists(true)).accept(doc));
+            assertFalse(filter(where("$.store..flavor").exists(true)).accept(doc));
+            assertTrue(filter(where("$.store..color").regex(Pattern.compile("^r.d$"))).accept(doc));
+            assertTrue(filter(where("$.store..color").type(String.class)).accept(doc));
+            assertTrue(filter(where("$.store..price").is(12.99)).accept(doc));
+            assertFalse(filter(where("$.store..price").is(13.99)).accept(doc));
+            
+        }
+        
+        @Test
+        public void collection_based_filters_cannot_be_applied_to_multi_level_expressions(){
+          
+          try{
+            where("$.store.*").size(4);
+            fail("This should have thrown an exception");
+          } catch(IllegalArgumentException e){
+            
+          }
+          
+          try{
+            where("$.store.*").in("foo");
+            fail("This should have thrown an exception");
+          } catch(IllegalArgumentException e){
+            
+          }
+        }
+
 }