adding testcase for #31

Author: erosb

tests/src/test/resources/org/everit/json/schema/issues/issue31/schema.json

@@ -0,0 +1,34 @@
+{
+    "$schema": "http://json-schema.org/draft-04/schema#",
+    "title": "JSON Schema X3D V3.3",
+    "description": "Experimental JSON Schema for X3D V3.3 ",
+    "type": "object",
+    "properties": {
+        "PixelTexture": {
+            "type": "object",
+            "properties": {
+                "@image": {
+                    "type": "array",
+                    "minItems": 3,
+                    "items": [
+                        {
+                            "type": "integer",
+                            "default": 0
+                        },
+                        {
+                            "type": "integer",
+                            "default": 0
+                        },
+                        {
+                            "type": "integer",
+                            "default": 0
+                        }
+                    ],
+                    "additionalItems": {
+                        "type": "integer"
+                    }
+                }
+            }
+        }
+    }
+}

tests/src/test/resources/org/everit/json/schema/issues/issue31/subject-valid.json

@@ -0,0 +1,5 @@
+{ "PixelTexture":
+{
+"@image":[4278190335,4278190207, 45]
+}
+}