public void CallingGetEnumeratorTwiceThrows()
{
var mockClient = new MockTelegramBotClient();
var receiver = new BlockingUpdateReceiver(mockClient);
_ = receiver.GetAsyncEnumerator();
Assert.Throws <InvalidOperationException>(() => receiver.GetAsyncEnumerator());
}
public async Task MoveNextThrowsIfEnumeratorIsDisposed()
{
var mockClient = new MockTelegramBotClient("foo");
var receiver = new BlockingUpdateReceiver(mockClient);
var enumerator = receiver.GetAsyncEnumerator();
await enumerator.MoveNextAsync();
await enumerator.DisposeAsync();
await Assert.ThrowsAnyAsync <OperationCanceledException>(
async() => await enumerator.MoveNextAsync()
);
}
public async Task ThrowsOnMoveNextIfCancelled()
{
var mockClient = new MockTelegramBotClient("foo", "bar");
var receiver = new BlockingUpdateReceiver(mockClient);
var cts = new CancellationTokenSource();
await using var enumerator = receiver.GetAsyncEnumerator(cts.Token);
Assert.True(await enumerator.MoveNextAsync());
Assert.Equal("foo", enumerator.Current.Message !.Text);
mockClient.Options.RequestDelay = 1000;
cts.CancelAfter(200);
await Assert.ThrowsAnyAsync <OperationCanceledException>(async() => await enumerator.MoveNextAsync());
}
public async Task ExceptionIsNotCaughtIfThereIsNoErrorHandler()
{
var mockClient = new MockTelegramBotClient
{
Options =
{
ExceptionToThrow = new("Oops")
}
};
var receiver = new BlockingUpdateReceiver(mockClient);
await using var enumerator = receiver.GetAsyncEnumerator();
Exception ex = await Assert.ThrowsAsync <Exception>(async() => await enumerator.MoveNextAsync());
Assert.Same(mockClient.Options.ExceptionToThrow, ex);
}
public async Task ReceivesOnlyOnMoveNextAsync()
{
var mockClient = new MockTelegramBotClient("foo", "bar");
var receiver = new BlockingUpdateReceiver(mockClient);
Assert.Equal(2, mockClient.MessageGroupsLeft);
await using var enumerator = receiver.GetAsyncEnumerator();
Assert.Equal(2, mockClient.MessageGroupsLeft);
Assert.True(await enumerator.MoveNextAsync());
Assert.Equal("foo", enumerator.Current.Message !.Text);
Assert.Equal(1, mockClient.MessageGroupsLeft);
Assert.True(await enumerator.MoveNextAsync());
Assert.Equal("bar", enumerator.Current.Message !.Text);
Assert.Equal(0, mockClient.MessageGroupsLeft);
}
