public async Task StartAsync_Throws_WhenPortInUse()
{
var tcpListener = new TcpListener(IPAddress.Loopback, 0);
tcpListener.Start();
try
{
var port = ((IPEndPoint)tcpListener.LocalEndpoint).Port;
var apiBuilder = new ApiBuilder(Substitute.For <ISimulation>());
apiBuilder.SetPort(port);
var apiSimulator = new ApiSimulator(apiBuilder);
try
{
await apiSimulator.StartAsync().ShouldThrowAsync <IOException>();
}
finally
{
await apiSimulator.StopAsync();
}
}
finally
{
tcpListener.Stop();
}
}
public void SetPort_SetsPort()
{
var apiBuilder = new ApiBuilder(Substitute.For <ISimulation>());
ApiBuilder self = apiBuilder.SetPort(1234);
apiBuilder.Port.ShouldBe(1234);
self.ShouldBe(apiBuilder);
}
public async Task StartAsync_Fails_WhenPortAlreadyUsed()
{
var listener = new TcpListener(IPAddress.Loopback, 0);
listener.Start();
try
{
var usedPort = ((IPEndPoint)listener.LocalEndpoint).Port;
var apiBuilder = new ApiBuilder(Substitute.For <ISimulation>());
var apiSimulator = new ApiSimulator(apiBuilder.SetPort(usedPort));
await apiSimulator.StartAsync().ShouldThrowAsync <IOException>();
}
finally
{
listener.Stop();
}
}
