public async Task HaltAsync_SendValidRequest()
{
//Arrange
string commandName = "halt";
IRestRequest sentRequest = null;
var commandSenderMock = new Mock <ICommandSender>();
commandSenderMock
.Setup(x => x.ExecuteRequestAsync <CommandResponse>(It.IsAny <string>(), It.IsAny <RestRequest>()))
.Callback((string baseUrl, IRestRequest request) => sentRequest = request)
.Returns(Task.FromResult(new CommandResponse()));
var focuser = new Focuser(_deviceConfiguration, commandSenderMock.Object);
//Act
await focuser.HaltAsync();
//Assert
Assert.Equal(Method.PUT, sentRequest.Method);
AssertCommonParameters(sentRequest.Parameters, _deviceConfiguration, commandName);
}