if you load an objet from json, JSONLoader will maybe add some undefined properties like bones. If you compare the originial with the json object, these properies will be missed. For that reson you cant use smartcompare and need to exclude props manually§

test/unit/qunit-utils.js

@@ -58,9 +58,11 @@ function checkGeometryClone( geom ) {
 	QUnit.assert.notEqual( copy.id, geom.id, "clone id should differ from original" );
 
 	var excludedProperties = [ 'parameters', 'widthSegments', 'heightSegments', 'depthSegments' ];
+
 	var differingProp = getDifferingProp( geom, copy, excludedProperties );
-	var differingProp = getDifferingProp( copy, geom, excludedProperties );
+	ok( differingProp === undefined, 'properties are equal' );
 
+	differingProp = getDifferingProp( copy, geom, excludedProperties );
 	ok( differingProp === undefined, 'properties are equal' );
 
 	// json round trip with clone
@@ -68,7 +70,9 @@ function checkGeometryClone( geom ) {
 
 }
 
-function getDifferingProp( geometryA, geometryB, excludedProperties ) {
+function getDifferingProp( geometryA, geometryB, excludedProperties) {
+	excludedProperties = excludedProperties || [];
+
 	var geometryKeys = Object.keys( geometryA );
 	var cloneKeys = Object.keys( geometryB );
 
@@ -137,7 +141,20 @@ function checkGeometryJsonReading( json, geom ) {
 	var output = loader.parseGeometries( wrap );
 
 	QUnit.assert.ok( output[ geom.uuid ], 'geometry matching source uuid not in output' );
-	QUnit.assert.smartEqual( output[ geom.uuid ], geom, 'Reconstruct geometry from ObjectLoader' );
+	// QUnit.assert.smartEqual( output[ geom.uuid ], geom, 'Reconstruct geometry from ObjectLoader' );
+
+	var differing = getDifferingProp(output[ geom.uuid ], geom, ['bones']);
+	if (differing) {
+		console.log(differing);
+	}
+
+	var excludedProperties = [ 'bones' ];
+
+	var differingProp = getDifferingProp( output[ geom.uuid ], geom, excludedProperties );
+	ok( differingProp === undefined, 'properties are equal' );
+
+	differingProp = getDifferingProp( geom, output[ geom.uuid ], excludedProperties );
+	ok( differingProp === undefined, 'properties are equal' );
 }
 
 // Verify geom -> json -> geom