testcase for stleary/JSON-java#292 and adding .idea to .gitiignore

Author: erosb

.gitignore

@@ -9,3 +9,4 @@ build
 /gradlew.bat
 .gitmodules
 src/main/
+.idea

src/test/java/org/json/junit/JSONPointerTest.java

@@ -78,6 +78,11 @@ public void uriFragmentNotation() {
         assertSame(document.get("foo"), query("#/foo"));
     }
 
+    @Test
+    public void uriFragmentNotationRoot() {
+        assertSame(document, query("#"));
+    }
+
     @Test
     public void uriFragmentPercentHandling() {
         assertSame(document.get("c%d"), query("#/c%25d"));