public async Task TcpClientConnection_ConnectAsyncThrowsInvalidOperationExceptionWhenConnectionIsAlreadyConnected()
{
// Arrange
using (new LocalTcpListener())
{
var connection = new TcpClientConnection();
// Act (Connect)
await connection.ConnectAsync(LocalTcpListener.Host, LocalTcpListener.Port, 5000);
// Act (Attempt Another Connection) & Assert
Assert.ThrowsAsync <InvalidOperationException>(() => connection.ConnectAsync(LocalTcpListener.Host, LocalTcpListener.Port, 5000));
}
}
public void TcpClientConnection_ConnectAsyncThrowsArgumentOutOfRangeExceptionWhenPortNumberIsNotValid()
{
// Arrange
var connection = new TcpClientConnection();
// Act & Assert
Assert.ThrowsAsync <ArgumentOutOfRangeException>(() => connection.ConnectAsync(LocalTcpListener.Host, -1, 5000));
}
public void TcpClientConnection_ConnectAsyncThrowsArgumentNullExceptionWhenHostIsNull()
{
// Arrange
var connection = new TcpClientConnection();
// Act & Assert
Assert.ThrowsAsync <ArgumentNullException>(() => connection.ConnectAsync(null, LocalTcpListener.Port, 5000));
}
public void TcpClientConnection_ConnectAsyncThrowsObjectDisposedExceptionWhenAttemptingToConnectUsingConnectionThatWasClosed()
{
// Arrange
using (new LocalTcpListener())
{
var connection = new TcpClientConnection();
connection.Close();
// Act & Assert
Assert.ThrowsAsync <ObjectDisposedException>(() => connection.ConnectAsync(LocalTcpListener.Host, LocalTcpListener.Port, 5000));
}
}
public void TcpClientConnection_ConnectAsyncAttemptTimesOut()
{
// Arrange
var connection = new TcpClientConnection();
// use a local IP that no physical machine is using
var host = "172.20.0.1";
// Act & Assert
Assert.ThrowsAsync <TimeoutException>(() => connection.ConnectAsync(host, LocalTcpListener.Port, _shortTimeout));
Assert.IsFalse(connection.Connected);
}
public async Task TcpClientConnection_ConnectAsyncAttemptThrows()
{
// Arrange
var connection = new TcpClientConnection();
// use a local IP that no physical machine is using
var host = "172.20.0.1";
// Act & Assert
try
{
await connection.ConnectAsync(host, LocalTcpListener.Port, _longTimeout);
Assert.Fail($"Expected: {typeof(SocketException)}");
}
catch (SocketException)
{
}
Assert.IsFalse(connection.Connected);
}
public async Task TcpClientConnection_ConnectAsyncSuccessfullyAndClose()
{
// Arrange
using (new LocalTcpListener())
{
var connection = new TcpClientConnection();
// Act (Connect)
await connection.ConnectAsync(LocalTcpListener.Host, LocalTcpListener.Port, 5000);
// Assert
Assert.IsTrue(connection.Connected);
var stream = connection.GetStream();
Assert.IsNotNull(stream);
Assert.IsInstanceOf <NetworkStream>(stream);
// Act (Close)
connection.Close();
// Assert
Assert.IsFalse(connection.Connected);
Assert.IsNull(connection.GetStream());
}
}
