createDriver function Null safety

Future<WebDriver> createDriver(
  1. AsyncRequestClient createRequestClient(
    1. Uri prefix
    ),
  2. {Uri? uri,
  3. Map<String, dynamic>? desired,
  4. WebDriverSpec spec = WebDriverSpec.Auto}
)

Creates a new async WebDriver.

This is intended for internal use! Please use createDriver from async_io.dart or async_html.dart.

Implementation

Future<WebDriver> createDriver(
    AsyncRequestClient Function(Uri prefix) createRequestClient,
    {Uri? uri,
    Map<String, dynamic>? desired,
    WebDriverSpec spec = WebDriverSpec.Auto}) async {
  uri ??= defaultUri;

  // This client's prefix at root, it has no session prefix in it.
  final client = createRequestClient(uri);

  final handler = getHandler(spec);

  final session = await client.send(
      handler.session.buildCreateRequest(desired: desired),
      handler.session.parseCreateResponse);

  if (session.spec != WebDriverSpec.JsonWire &&
      session.spec != WebDriverSpec.W3c) {
    throw 'Unexpected spec: ${session.spec}';
  }

  return WebDriver(uri, session.id, UnmodifiableMapView(session.capabilities!),
      createRequestClient(uri.resolve('session/${session.id}/')), session.spec);
}