public void CanConnectTwice()
{
using (var device = new TestDevice(0))
{
device.Connect();
device.Connect();
Assert.AreEqual(ConnectionState.Connected, device.State);
Assert.AreEqual(1, device.ConnectionAttempts);
}
}
public void CanOpenAndCloseConnection()
{
using (var device = new TestDevice(0))
{
device.Connect();
Assert.AreEqual(ConnectionState.Connected, device.State);
Assert.AreEqual(1, device.ConnectionAttempts);
device.Disconnect();
Assert.AreEqual(ConnectionState.Disconnected, device.State);
device.Connect();
Assert.AreEqual(ConnectionState.Connected, device.State);
Assert.AreEqual(2, device.ConnectionAttempts);
}
}
public void AbortIfConnectionFails()
{
using (var device = new TestDevice(Int32.MaxValue))
{
device.Connect();
}
}
public void CanReconnectAfterError()
{
using (var device = new TestDevice(Int32.MaxValue))
{
try
{
device.Connect();
}
catch (HardwareException)
{
}
Assert.AreEqual(ConnectionState.Error, device.State);
device.NumberOfConnectionsToFail = 0;
device.Connect();
Assert.AreEqual(ConnectionState.Connected, device.State);
}
}
public void CanMonitorConnectionStatus()
{
using (var device = new TestDevice(0))
{
int numberOfChanges = 0;
device.StateChanged += (s, e) => ++ numberOfChanges;
device.Connect();
Assert.IsTrue(numberOfChanges > 0);
}
}
public void RetryConnectionIfFails()
{
using (var device = new TestDevice(2))
{
var start = DateTime.UtcNow;
device.Connect();
Assert.AreEqual(ConnectionState.Connected, device.State);
Assert.AreEqual(3, device.ConnectionAttempts); // 2 failed + 1 successful
// At least one second elapsed because of delay between each attempt
Assert.IsTrue(DateTime.UtcNow - start > TimeSpan.FromSeconds(1));
}
}
public void ErrorStateIfConnectionFails()
{
using (var device = new TestDevice(Int32.MaxValue))
{
try
{
device.Connect();
}
catch (HardwareException)
{
}
Assert.AreEqual(ConnectionState.Error, device.State);
}
}