add open plaques

tests/main.test.js

@@ -28,15 +28,9 @@ describe('mapping properties with rich mapping engine', () => {
 	})
 	test('maps simple key to key, and keep the same value', () => {
 		let Mapping_engine = new mapping_engine(mappingSame)
-		let featurePoint = {
-			type: 'Feature',
-			properties: {
-				equal: "same value"
-			}
-		}
 		let newProperties = Mapping_engine.convertProperty('equal',
 			Object.keys(mappingSame.tags),
-			featurePoint,
+			feature_to_test,
 			mappingSame.default_properties_of_point)
 
 		expect(newProperties).toStrictEqual({