public void BrokerGetAccountsAsyncOnUnsupportedPlatformTest() { using (var harness = CreateTestHarness()) { IBroker broker = harness.ServiceBundle.PlatformProxy.CreateBroker(null); AssertException.TaskThrowsAsync <PlatformNotSupportedException>( () => broker.GetAccountsAsync(TestConstants.ClientId, TestConstants.RedirectUri)) .ConfigureAwait(false); } }