public async Task TestStreamHandlesLossOfAuthorization()
{
await adminClient.Query(
CreateCollection(Obj("name", "streamed-things-auth"))
);
Value createdInstance = await adminClient.Query(
Create(Collection("streamed-things-auth"),
Obj("credentials",
Obj("password", "abcdefg"))));
var docRef = createdInstance.At("ref");
// new key + client
Value newKey = await adminClient.Query(CreateKey(Obj("role", "server-readonly")));
FaunaClient streamingClient = adminClient.NewSessionClient(newKey.At("secret").To <string>().Value);
var provider = await streamingClient.Stream(docRef);
var done = new TaskCompletionSource <object>();
List <Value> events = new List <Value>();
var monitor = new StreamingEventMonitor(
async value =>
{
if (events.Count == 0)
{
try
{
// update doc on `start` event
await adminClient.Query(Update(docRef, Obj("data", Obj("testField", "afterStart"))));
// delete key
await adminClient.Query(Delete(newKey.At("ref").To <RefV>().Value));
// push an update to force auth revalidation.
await adminClient.Query(Update(docRef, Obj("data", Obj("testField", "afterKeyDelete"))));
}
catch (Exception ex)
{
done.SetException(ex);
}
}
// capture element
events.Add(value);
// ask for more elements
provider.RequestData();
},
ex => { done.SetException(ex); },
() => { done.SetResult(null); }
);
// subscribe to data provider
monitor.Subscribe(provider);
// wrapping an asynchronous call
AsyncTestDelegate res = async() => await done.Task;
// blocking until we get an exception
var exception = Assert.ThrowsAsync <StreamingException>(res);
// clear the subscription
monitor.Unsubscribe();
// validating exception message
Assert.AreEqual("permission denied: Authorization lost during stream evaluation.", exception.Message);
AssertErrors(exception, code: "permission denied", description: "Authorization lost during stream evaluation.");
}
