Add test for extra props

Author: domoritz

test/programs/interface-extra-props/main.ts

@@ -0,0 +1,5 @@
+export interface MyObject {
+    required: string;
+    optional?: number;
+    [name: string]: string|number;
+}

test/programs/interface-extra-props/schema.json

@@ -0,0 +1,26 @@
+{
+    "$schema": "http://json-schema.org/draft-04/schema#",
+    "definitions": {
+        "MyObject": {
+            "type": "object",
+            "properties": {
+                "required": {
+                    "type": "string"
+                },
+                "optional": {
+                    "type": "number"
+                }
+            },
+            "required": [
+                "required"
+            ],
+            "additionalProperties": {
+                "type": [
+                    "string",
+                    "number"
+                ]
+            }
+        }
+    },
+    "$ref": "#/definitions/MyObject"
+}

test/schema.test.ts

@@ -158,6 +158,8 @@ describe("schema", () => {
 
         assertSchema("module-interface-single", "MyObject");
 
+        assertSchema("interface-extra-props", "MyObject");
+
         // not supported right now
         // assertSchema("module-interface-deep", "Def");
     });