### Question:
DriverOperations { public void open(String baseUrl) { driver.get(baseUrl); } DriverOperations(ProxyDriverIntegrator proxyDriverIntegrator); WebDriver getDriver(); void prepare(); void cleanUp(); void open(String baseUrl); Har getHar();  }### Answer:
@Test public void openBaseUrlDelegatesToDriver() { DriverOperations driverOperations = new DriverOperations(getMockedProxyDriverIntegrator()); driverOperations.open(baseUrl); verify(driver).get(baseUrl); }