public async Task IfValidateAuthenticationStateAsyncReturnsUnrelatedCancelledTask_TreatAsFailure()
{
// Arrange
var validationTcs = new TaskCompletionSource <bool>();
var authenticationStateChangedCount = 0;
using var provider = new TestRevalidatingServerAuthenticationStateProvider(
TimeSpan.FromMilliseconds(50));
provider.NextValidationResult = validationTcs.Task;
provider.SetAuthenticationState(CreateAuthenticationStateTask("test user"));
provider.AuthenticationStateChanged += _ => { authenticationStateChangedCount++; };
// Be waiting for the first ValidateAuthenticationStateAsync to complete
await provider.NextValidateAuthenticationStateAsyncCall;
var firstRevalidationCall = provider.RevalidationCallLog.Single();
Assert.Equal(0, authenticationStateChangedCount);
// Act: ValidateAuthenticationStateAsync returns cancelled task, but the cancellation
// is unrelated to the CT we supplied
validationTcs.TrySetCanceled(new CancellationTokenSource().Token);
// Assert: Since we didn't ask for that operation to be cancelled, this is treated as
// a failure to validate, so we force a logout
Assert.Equal(1, authenticationStateChangedCount);
var newAuthState = await provider.GetAuthenticationStateAsync();
Assert.False(newAuthState.User.Identity.IsAuthenticated);
Assert.Null(newAuthState.User.Identity.Name);
}
public void AcceptsAndReturnsAuthStateFromHost()
{
// Arrange
using var provider = new TestRevalidatingServerAuthenticationStateProvider(TimeSpan.MaxValue);
// Act/Assert: Host can supply a value
var hostAuthStateTask = (new TaskCompletionSource <AuthenticationState>()).Task;
provider.SetAuthenticationState(hostAuthStateTask);
Assert.Same(hostAuthStateTask, provider.GetAuthenticationStateAsync());
// Act/Assert: Host can supply a changed value
var hostAuthStateTask2 = (new TaskCompletionSource <AuthenticationState>()).Task;
provider.SetAuthenticationState(hostAuthStateTask2);
Assert.Same(hostAuthStateTask2, provider.GetAuthenticationStateAsync());
}
public async Task IfValidateAuthenticationStateAsyncReturnsTrue_ContinuesRevalidating()
{
// Arrange
using var provider = new TestRevalidatingServerAuthenticationStateProvider(
TimeSpan.FromMilliseconds(50));
provider.SetAuthenticationState(CreateAuthenticationStateTask("test user"));
provider.NextValidationResult = Task.FromResult(true);
var didNotifyAuthenticationStateChanged = false;
provider.AuthenticationStateChanged += _ => { didNotifyAuthenticationStateChanged = true; };
// Act
for (var i = 0; i < 10; i++)
{
await provider.NextValidateAuthenticationStateAsyncCall;
}
// Assert
Assert.Equal(10, provider.RevalidationCallLog.Count);
Assert.False(didNotifyAuthenticationStateChanged);
Assert.Equal("test user", (await provider.GetAuthenticationStateAsync()).User.Identity.Name);
}
public async Task SuppliesCancellationTokenThatSignalsWhenRevalidationLoopIsBeingDiscarded()
{
// Arrange
var validationTcs = new TaskCompletionSource <bool>();
var authenticationStateChangedCount = 0;
using var provider = new TestRevalidatingServerAuthenticationStateProvider(
TimeSpan.FromMilliseconds(50));
provider.NextValidationResult = validationTcs.Task;
provider.SetAuthenticationState(CreateAuthenticationStateTask("test user"));
provider.AuthenticationStateChanged += _ => { authenticationStateChangedCount++; };
// Act/Assert 1: token isn't cancelled initially
await provider.NextValidateAuthenticationStateAsyncCall;
var firstRevalidationCall = provider.RevalidationCallLog.Single();
Assert.False(firstRevalidationCall.CancellationToken.IsCancellationRequested);
Assert.Equal(0, authenticationStateChangedCount);
// Have the task throw a TCE to show this doesn't get treated as a failure
firstRevalidationCall.CancellationToken.Register(() => validationTcs.TrySetCanceled(firstRevalidationCall.CancellationToken));
// Act/Assert 2: token is cancelled when the loop is superseded
provider.NextValidationResult = Task.FromResult(true);
provider.SetAuthenticationState(CreateAuthenticationStateTask("different user"));
Assert.True(firstRevalidationCall.CancellationToken.IsCancellationRequested);
// Since we asked for that operation to be cancelled, we don't treat it as a failure and
// don't force a logout
Assert.Equal(1, authenticationStateChangedCount);
Assert.Equal("different user", (await provider.GetAuthenticationStateAsync()).User.Identity.Name);
// Subsequent revalidation can complete successfully
await provider.NextValidateAuthenticationStateAsyncCall;
Assert.Collection(provider.RevalidationCallLog.Skip(1),
call => Assert.Equal("different user", call.AuthenticationState.User.Identity.Name));
}