message: Fix `showQuickPick` if getting items throws an error
diff: @@ -21,14 +21,14 @@ export class TestUserInput implements types.IAzureUserInput, types.TestUserInput
  }
  public async showQuickPick<T extends QuickPickItem>(items: T[] | Thenable<T[]>, options: QuickPickOptions): Promise<T> {
  + const resolvedItems: T[] = await Promise.resolve(items);
  +
  const input: string | RegExp | TestInput | undefined = this._inputs.shift();
  if (input === undefined) {
  throw new Error(`No more inputs left for call to showQuickPick. Placeholder: '${options.placeHolder}'`);
  } else if (input === TestInput.BackButton) {
  throw new GoBackError();
  } else {
  - const resolvedItems: T[] = await Promise.resolve(items);
  -
  if (resolvedItems.length === 0) {
  throw new Error(`No quick pick items found. Placeholder: '${options.placeHolder}'`);
  } else if (input instanceof RegExp) {
  