message: disposing the instance after use
diff: @@ -73,6 +73,7 @@ export function BasicTests(Constr, ...args: any[]): void {
  if (Classes[className] === Constr) {
  const instance = new Constr(...args);
  expect(instance.toString()).to.equal(className);
  + instance.dispose();
  }
  }
  });
  