public void TestArgumentExceptions ()
{
using (var client = new Pop3Client ()) {
var socket = new Socket (SocketType.Stream, ProtocolType.Tcp);
// Connect
Assert.Throws<ArgumentNullException> (() => client.Connect ((Uri) null));
Assert.Throws<ArgumentNullException> (async () => await client.ConnectAsync ((Uri) null));
Assert.Throws<ArgumentNullException> (() => client.Connect (null, 110, false));
Assert.Throws<ArgumentNullException> (async () => await client.ConnectAsync (null, 110, false));
Assert.Throws<ArgumentException> (() => client.Connect (string.Empty, 110, false));
Assert.Throws<ArgumentException> (async () => await client.ConnectAsync (string.Empty, 110, false));
Assert.Throws<ArgumentOutOfRangeException> (() => client.Connect ("host", -1, false));
Assert.Throws<ArgumentOutOfRangeException> (async () => await client.ConnectAsync ("host", -1, false));
Assert.Throws<ArgumentNullException> (() => client.Connect (null, 110, SecureSocketOptions.None));
Assert.Throws<ArgumentNullException> (async () => await client.ConnectAsync (null, 110, SecureSocketOptions.None));
Assert.Throws<ArgumentException> (() => client.Connect (string.Empty, 110, SecureSocketOptions.None));
Assert.Throws<ArgumentException> (async () => await client.ConnectAsync (string.Empty, 110, SecureSocketOptions.None));
Assert.Throws<ArgumentOutOfRangeException> (() => client.Connect ("host", -1, SecureSocketOptions.None));
Assert.Throws<ArgumentOutOfRangeException> (async () => await client.ConnectAsync ("host", -1, SecureSocketOptions.None));
Assert.Throws<ArgumentNullException> (() => client.Connect (null, "host", 110, SecureSocketOptions.None));
Assert.Throws<ArgumentException> (() => client.Connect (socket, "host", 110, SecureSocketOptions.None));
// Authenticate
Assert.Throws<ArgumentNullException> (() => client.Authenticate (null));
Assert.Throws<ArgumentNullException> (async () => await client.AuthenticateAsync (null));
Assert.Throws<ArgumentNullException> (() => client.Authenticate (null, "password"));
Assert.Throws<ArgumentNullException> (async () => await client.AuthenticateAsync (null, "password"));
Assert.Throws<ArgumentNullException> (() => client.Authenticate ("username", null));
Assert.Throws<ArgumentNullException> (async () => await client.AuthenticateAsync ("username", null));
}
}