public void TryToSendWhenSenderIsBusy()
{
var mmm = new MailMergeMessage("Subject", "plain text");
mmm.MailMergeAddresses.Add(new MailMergeAddress(MailAddressType.To, "Test name", "*****@*****.**"));
mmm.MailMergeAddresses.Add(new MailMergeAddress(MailAddressType.To, "Test name 2", "*****@*****.**"));
var mms = new MailMergeSender
{
IsBusy = true
};
// single mail
Assert.Throws <InvalidOperationException>(() => mms.Send(mmm, new object()));
Assert.ThrowsAsync <InvalidOperationException>(async() => await mms.SendAsync(mmm, new object()));
// several mails
Assert.Throws <InvalidOperationException>(() => mms.Send(mmm, new Dictionary <string, string>()));
Assert.ThrowsAsync <InvalidOperationException>(async() =>
await mms.SendAsync(mmm, new Dictionary <string, string>()));
mms.IsBusy = false;
mmm.Dispose();
mms.Dispose();
}
//[TestCase(1000, Ignore = "Only for performance tests")]
public async Task SendSyncAndAsyncPerformance(int numOfRecipients)
{
// In this sample:
// With 100,000 messages and 10 MaxNumOfSmtpClients async is about twice as fast as sync.
var recipients = new List <Recipient>();
for (var i = 0; i < numOfRecipients; i++)
{
recipients.Add(new Recipient {
Email = $"recipient-{i}@example.com", Name = $"Name of {i}"
});
}
var mmm = new MailMergeMessage("Async/Sync email test", "This is the plain text part for {Name} ({Email})")
{
Config = _settings.MessageConfig
};
mmm.MailMergeAddresses.Add(new MailMergeAddress(MailAddressType.To, "{Name}", "{Email}"));
var mms = new MailMergeSender {
Config = _settings.SenderConfig
};
mms.Config.MaxNumOfSmtpClients = 10;
var sw = new Stopwatch();
sw.Start();
mms.Send(mmm, recipients);
sw.Stop();
Console.WriteLine($"Time to send {recipients.Count} messages sync: {sw.ElapsedMilliseconds} milliseconds.");
Console.WriteLine();
Assert.AreEqual(recipients.Count, _server.ReceivedEmail.Length);
Assert.IsFalse(mms.IsBusy);
sw.Reset();
_server.ClearReceivedEmail();
sw.Start();
int numOfSmtpClientsUsed = 0;
mms.OnMergeComplete += (s, args) => { numOfSmtpClientsUsed = args.NumOfSmtpClientsUsed; };
await mms.SendAsync(mmm, recipients);
sw.Stop();
Console.WriteLine(
$"Time to send {recipients.Count} messages async: {sw.ElapsedMilliseconds} milliseconds.");
// Note: With too many SmtpClients and small emails some of the clients will never de-queue from the ConcurrentQueue of MailMergeSender
Console.WriteLine(
$"{numOfSmtpClientsUsed} tasks (and SmtpClients) used for sending async\n(max {mms.Config.MaxNumOfSmtpClients} were configured).");
Assert.AreEqual(recipients.Count, _server.ReceivedEmail.Length);
Assert.IsFalse(mms.IsBusy);
mms.Dispose();
mmm.Dispose();
}
public async Task CancelSendOperation()
{
var mmm = new MailMergeMessage("Cancel immediately", "plain text");
mmm.MailMergeAddresses.Add(new MailMergeAddress(MailAddressType.To, "Test name", "*****@*****.**"));
mmm.MailMergeAddresses.Add(new MailMergeAddress(MailAddressType.From, "Test name 2", "*****@*****.**"));
var mms = new MailMergeSender {
Config = _settings.SenderConfig
};
mms.Config.MaxNumOfSmtpClients = 1;
mms.Config.SmtpClientConfig[0].MessageOutput = MessageOutput.SmtpServer;
mms.Config.SmtpClientConfig[0].DelayBetweenMessages = 2000;
var anyData = new[] { new { mailNo = 1 }, new { mailNo = 2 }, new { mailNo = 3 } };
var tasks = new[]
{
await Task.Factory.StartNew(async() => await mms.SendAsync(mmm, anyData)),
Task.Factory.StartNew(() => mms.SendCancel()),
Task.Factory.StartNew(() => mms.SendCancel()) // a second cancel operation will just return
};
Assert.Throws <AggregateException>(() => { Task.WaitAll(tasks); });
Assert.AreEqual(0, _server.ReceivedEmailCount);
mms.Dispose();
mmm.Dispose();
}
public void CancelSendOperationWithDelay()
{
var mmm = new MailMergeMessage("Cancel with delay", "plain text");
mmm.MailMergeAddresses.Add(new MailMergeAddress(MailAddressType.To, "Test name", "*****@*****.**"));
mmm.MailMergeAddresses.Add(new MailMergeAddress(MailAddressType.From, "Test name 2", "*****@*****.**"));
var mms = new MailMergeSender
{
Config = _settings.SenderConfig
};
mms.Config.MaxNumOfSmtpClients = 1;
mms.Config.SmtpClientConfig[0].MessageOutput = MessageOutput.SmtpServer;
mms.Config.SmtpClientConfig[0].DelayBetweenMessages = 2000;
var anyData = new[] { new { mailNo = 1 }, new { mailNo = 2 }, new { mailNo = 3 } };
mms.SendCancel(500);
Assert.ThrowsAsync <TaskCanceledException>(() => mms.SendAsync(mmm, anyData));
Assert.AreEqual(0, _server.ReceivedEmailCount);
mmm.Dispose();
mms.Dispose();
}
public void TryToSendWithNullAsEnumerable()
{
var mms = new MailMergeSender();
var mmm = new MailMergeMessage(); // no need to fully prepare for this test
Assert.Throws <ArgumentNullException>(() => mms.Send(null, (Dictionary <string, string>)null));
Assert.ThrowsAsync <ArgumentNullException>(async() =>
await mms.SendAsync(mmm, (Dictionary <string, string>)null));
mms.Dispose();
mmm.Dispose();
}
[TestCase(false, true)] // no exception with null for MimeMessage must throw exception
public void Send_With_And_Without_MailMergeMessageException(bool throwException, bool setMimeMessageToNull)
{
#region * Sync and Async preparation *
const string theFormatError = "{causeFormatError}";
const string plainText = theFormatError + "This is the plain text part for {Name} ({Email})";
var mms = new MailMergeSender {
Config = _settings.SenderConfig
};
mms.Config.MaxNumOfSmtpClients = 1;
// Event raising when getting the merged MimeMessage of the MailMergeMessage has failed.
mms.OnMessageFailure += (mailMergeSender, messageFailureArgs) =>
{
lock (_locker)
{
if (throwException)
{
return;
}
// Remove the cause of the exception and return corrected values
// Note: changes of MailMergeMessage will affect als messages to be sent
messageFailureArgs.MailMergeMessage.PlainText = plainText.Replace(theFormatError, string.Empty);
// in production a try...catch... must be implemented
if (setMimeMessageToNull)
{
messageFailureArgs.MimeMessage = null;
}
else
{
messageFailureArgs.MimeMessage =
messageFailureArgs.MailMergeMessage.GetMimeMessage(messageFailureArgs.DataSource);
}
messageFailureArgs.ThrowException = throwException;
}
};
var recipients = new List <Recipient>();
for (var i = 0; i < 2; i++)
{
recipients.Add(new Recipient {
Email = $"recipient-{i}@example.com", Name = $"Name of {i}"
});
}
var mmm = new MailMergeMessage("Message failure", plainText)
{
Config = _settings.MessageConfig
};
mmm.MailMergeAddresses.Add(new MailMergeAddress(MailAddressType.To, "{Name}", "{Email}"));
#endregion
#region * Synchronous send methods *
// send enumerable data
mmm.PlainText = plainText; // set text from constant
try
{
if (throwException)
{
Assert.Throws <MailMergeMessage.MailMergeMessageException>(() => mms.Send(mmm, recipients));
}
else
{
if (setMimeMessageToNull)
{
Assert.Throws <MailMergeMessage.MailMergeMessageException>(() => mms.Send(mmm, recipients));
}
else
{
Assert.DoesNotThrow(() => mms.Send(mmm, recipients));
}
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
if (throwException)
{
Assert.AreEqual(0, _server.ReceivedEmailCount);
}
else
{
if (setMimeMessageToNull)
{
Assert.AreEqual(0, _server.ReceivedEmailCount);
}
else
{
Assert.AreEqual(recipients.Count, _server.ReceivedEmailCount);
}
}
_server.ClearReceivedEmail();
// send single data item
mmm.PlainText = plainText; // set text from constant
try
{
if (throwException)
{
Assert.Throws <MailMergeMessage.MailMergeMessageException>(() => mms.Send(mmm, recipients[0]));
}
else
{
if (setMimeMessageToNull)
{
Assert.Throws <MailMergeMessage.MailMergeMessageException>(() => mms.Send(mmm, recipients[0]));
}
else
{
Assert.DoesNotThrow(() => mms.Send(mmm, recipients[0]));
}
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
if (throwException)
{
Assert.AreEqual(0, _server.ReceivedEmailCount);
}
else
{
if (setMimeMessageToNull)
{
Assert.AreEqual(0, _server.ReceivedEmailCount);
}
else
{
Assert.AreEqual(1, _server.ReceivedEmailCount);
}
}
_server.ClearReceivedEmail();
#endregion
#region * Async send methods *
// send enumerable data
mmm.PlainText = plainText; // set text from constant
try
{
if (throwException)
{
Assert.ThrowsAsync <MailMergeMessage.MailMergeMessageException>(async() =>
await mms.SendAsync(mmm, recipients));
}
else
{
if (setMimeMessageToNull)
{
Assert.ThrowsAsync <MailMergeMessage.MailMergeMessageException>(async() =>
await mms.SendAsync(mmm, recipients));
}
else
{
Assert.DoesNotThrow(() => mms.Send(mmm, recipients));
}
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
if (throwException)
{
Assert.AreEqual(0, _server.ReceivedEmailCount);
}
else
{
if (setMimeMessageToNull)
{
Assert.AreEqual(0, _server.ReceivedEmailCount);
}
else
{
Assert.AreEqual(recipients.Count, _server.ReceivedEmailCount);
}
}
_server.ClearReceivedEmail();
// send single data item
mmm.PlainText = plainText; // set text from constant
try
{
if (throwException)
{
Assert.ThrowsAsync <MailMergeMessage.MailMergeMessageException>(async() =>
await mms.SendAsync(mmm, recipients[0]));
}
else
{
if (setMimeMessageToNull)
{
Assert.ThrowsAsync <MailMergeMessage.MailMergeMessageException>(async() =>
await mms.SendAsync(mmm, recipients[0]));
}
else
{
Assert.DoesNotThrow(() => mms.Send(mmm, recipients[0]));
}
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
if (throwException)
{
Assert.AreEqual(0, _server.ReceivedEmailCount);
}
else
{
if (setMimeMessageToNull)
{
Assert.AreEqual(0, _server.ReceivedEmailCount);
}
else
{
Assert.AreEqual(1, _server.ReceivedEmailCount);
}
}
#endregion
mms.Dispose();
mmm.Dispose();
}
public async Task AllSenderEventsMailMerge(string somePlaceholder, bool withParseFailure)
{
#region * Sync and Async preparation *
var actualEvents = new ConcurrentStack <string>();
var expectedEvents = new ConcurrentStack <string>();
var mms = new MailMergeSender {
Config = _settings.SenderConfig
};
mms.Config.MaxNumOfSmtpClients = 1;
// Event raising before merging starts
mms.OnMergeBegin += (mailMergeSender, mergeBeginArgs) => { actualEvents.Push(nameof(mms.OnMergeBegin)); };
// Event raising when getting the merged MimeMessage of the MailMergeMessage has failed.
mms.OnMessageFailure += (mailMergeSender, messageFailureArgs) =>
{
actualEvents.Push(nameof(mms.OnMessageFailure));
};
// Event raising before sending a single mail message starts
mms.OnBeforeSend += (smtpClient, beforeSendArgs) => { actualEvents.Push(nameof(mms.OnBeforeSend)); };
// Event raising right after the SmtpClient's connection to the server is up (but not yet authenticated).
mms.OnSmtpConnected += (smtpClient, smtpClientArgs) => { actualEvents.Push(nameof(mms.OnSmtpConnected)); };
// Event raising after the SmtpClient has authenticated on the server.
mms.OnSmtpAuthenticated += (smtpClient, smtpClientArgs) =>
{
actualEvents.Push(nameof(mms.OnSmtpAuthenticated));
};
// Event raising after the SmtpClient has disconnected from the SMTP mail server.
mms.OnSmtpDisconnected += (smtpClient, smtpClientArgs) =>
{
actualEvents.Push(nameof(mms.OnSmtpDisconnected));
};
// Event raising if sending a single mail message fails
mms.OnSendFailure += (smtpClient, sendFailureArgs) => { actualEvents.Push(nameof(mms.OnSendFailure)); };
// Event raising before sending a single mail message is finished
mms.OnAfterSend += (smtpClient, afterSendArgs) => { actualEvents.Push(nameof(mms.OnAfterSend)); };
// Event raising each time before and after a single message was sent
mms.OnMergeProgress += (mailMergeSender, progressArgs) =>
{
actualEvents.Push(nameof(mms.OnMergeProgress));
};
// Event raising after merging is completed
mms.OnMergeComplete += (mailMergeSender, completedArgs) =>
{
actualEvents.Push(nameof(mms.OnMergeComplete));
};
var recipients = new List <Recipient>();
for (var i = 0; i < 1; i++)
{
recipients.Add(new Recipient {
Email = $"recipient-{i}@example.com", Name = $"Name of {i}"
});
}
var mmm = new MailMergeMessage("Event tests" + somePlaceholder,
"This is the plain text part for {Name} ({Email})")
{
Config = _settings.MessageConfig
};
mmm.MailMergeAddresses.Add(new MailMergeAddress(MailAddressType.To, "{Name}", "{Email}"));
var sequenceOfExpectedEvents = new List <string>();
if (withParseFailure)
{
sequenceOfExpectedEvents.Clear();
sequenceOfExpectedEvents.AddRange(new[]
{
nameof(mms.OnMergeBegin), nameof(mms.OnMergeProgress), nameof(mms.OnMessageFailure),
nameof(mms.OnMergeProgress), nameof(mms.OnMergeComplete)
});
}
else
{
sequenceOfExpectedEvents.Clear();
sequenceOfExpectedEvents.AddRange(new[]
{
nameof(mms.OnMergeBegin), nameof(mms.OnMergeProgress), nameof(mms.OnBeforeSend),
nameof(mms.OnSmtpConnected),
nameof(mms.OnAfterSend), nameof(mms.OnMergeProgress), nameof(mms.OnSmtpDisconnected),
nameof(mms.OnMergeComplete)
});
}
#endregion
#region * Synchronous send method *
try
{
mms.Send(mmm, recipients);
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
expectedEvents.Clear();
expectedEvents.PushRange(sequenceOfExpectedEvents.ToArray());
Assert.AreEqual(expectedEvents.Count, actualEvents.Count);
// sequence of sync sending is predefined
while (actualEvents.Count > 0)
{
expectedEvents.TryPop(out string expected);
actualEvents.TryPop(out string actual);
Assert.AreEqual(expected, actual);
}
#endregion
#region * Async send method *
actualEvents.Clear();
expectedEvents.Clear();
expectedEvents.PushRange(sequenceOfExpectedEvents.ToArray());
try
{
await mms.SendAsync(mmm, recipients);
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
Assert.AreEqual(expectedEvents.Count, actualEvents.Count);
// sequence of async sending may be different from sync, but all events must exists
var sortedActual = actualEvents.OrderBy(e => e).ToArray();
var sortedExpected = expectedEvents.OrderBy(e => e).ToArray();
for (var i = 0; i < sortedActual.Length; i++)
{
Assert.AreEqual(sortedExpected[i], sortedActual[i]);
}
#endregion
mms.Dispose();
mmm.Dispose();
}