public void FahClientCommand_ExecuteAsyncThrowsInvalidOperationExceptionWhenConnectionIsNotConnected()
{
// Arrange
var command = new FahClientCommand(new FahClientConnection("foo", 2000));
// Act & Assert
Assert.ThrowsAsync <InvalidOperationException>(() => command.ExecuteAsync());
}
public void FahClientCommand_ExecuteAsyncThrowsInvalidOperationExceptionWhenTcpConnectionIsNoLongerConnected()
{
// Arrange
using (var connection = new MockFahClientConnection())
{
connection.Open();
var command = new FahClientCommand(connection);
// Act & Assert
Assert.ThrowsAsync <InvalidOperationException>(() => command.ExecuteAsync());
}
}
public void FahClientCommand_ExecuteAsyncRethrowsExceptionFromStreamWriteAsyncAndClosesTheConnection()
{
// Arrange
Func <TcpConnection> factory = () => new MockTcpConnection(() => new MockStreamThrowsOnWrite());
using (var connection = new FahClientConnection("foo", 2000, new MockTcpConnectionFactory(factory)))
{
connection.Open();
var command = new FahClientCommand(connection);
// Act & Assert
Assert.ThrowsAsync <IOException>(() => command.ExecuteAsync());
Assert.IsFalse(connection.Connected);
}
}
public void FahClientCommand_ExecuteWritesNullCommandTextToConnection()
{
// Arrange
var tcpConnectionFactory = new MockTcpConnectionFactory();
using (var connection = new FahClientConnection("foo", 2000, tcpConnectionFactory))
{
connection.Open();
var command = new FahClientCommand(connection, null);
// Act
int bytesWritten = command.Execute();
// Assert
Assert.AreEqual(0, bytesWritten);
var memoryStream = (MemoryStream)tcpConnectionFactory.TcpConnection.GetStream();
Assert.AreEqual("", Encoding.ASCII.GetString(memoryStream.ToArray()));
}
}
public async Task FahClientCommand_ExecuteAsyncWritesCommandTextToConnection()
{
// Arrange
var tcpConnectionFactory = new MockTcpConnectionFactory();
using (var connection = new FahClientConnection("foo", 2000, tcpConnectionFactory))
{
connection.Open();
var command = new FahClientCommand(connection, "command text");
// Act
int bytesWritten = await command.ExecuteAsync();
// Assert
Assert.AreEqual(13, bytesWritten);
var memoryStream = (MemoryStream)tcpConnectionFactory.TcpConnection.GetStream();
Assert.AreEqual("command text\n", Encoding.ASCII.GetString(memoryStream.ToArray()));
}
}