Add tests for references and change in rules for draft 3 to 4 (#54)

Author: suprith-hub

rules/from-draft3/to-draft4/013-type-has-objects-and-strings-in-its-array-initialize.json

@@ -7,6 +7,7 @@
         { "operation": "contains-type", "path": [ "type" ], "value": "string" }
     ],
     "transform": [
-        { "operation": "add", "path": [ "anyOf", "-" ], "value": { "type": [] } }
+        { "operation": "add", "path": [ "anyOf", "-" ], "value": { "type": [] } },
+        { "operation": "add", "path": [ "type", "-" ], "value": true }
     ]
 }

rules/from-draft3/to-draft4/014-type-has-objects-and-strings-in-its-array.json

@@ -7,6 +7,6 @@
         { "operation": "type-is", "path": [ "type", {} ], "value": "string" }
     ],
     "transform": [
-        { "operation": "remove-and-append", "to": [ "anyOf", "-", "type" ], "from": [ "type", {} ] }
+        { "operation": "copy", "to": [ "anyOf", "-", "type", "-" ], "from": [ "type", {} ] }
     ]
 }

rules/from-draft3/to-draft4/016-type-has-objects-and-strings-in-its-array.json

@@ -0,0 +1,12 @@
+{
+    "vocabulary": "core",
+    "condition": [ 
+        { "operation": "has-key", "path": [], "value": "type" },
+        { "operation": "type-is", "path": [ "type" ], "value": "array" },
+        { "operation": "contains-type", "path": [ "type" ], "value": "object" },
+        { "operation": "type-is", "path": [ "type", {} ], "value": "string" }
+    ],
+    "transform": [
+        { "operation": "remove", "path": [ "type", {} ] }
+    ]
+}

rules/from-draft3/to-draft4/017-type-has-boolean-in-its-array.json

@@ -0,0 +1,11 @@
+{
+    "vocabulary": "core",
+    "condition": [ 
+        { "operation": "has-key", "path": [], "value": "type" },
+        { "operation": "type-is", "path": [ "type" ], "value": "array" },
+        { "operation": "contains-type", "path": [ "type" ], "value": "boolean" } 
+    ],
+    "transform": [
+        { "operation": "remove", "path": [ "type" ] }
+    ]
+}