public static void CallsReadWord()
{
var cfg = new FanConfiguration()
{
ReadRegister = 123,
MinSpeedValue = 0,
MaxSpeedValue = 20000
};
var ec = A.Fake <IEmbeddedController>();
A.CallTo(() => ec.AcquireLock(A <int> .Ignored)).Returns(true);
A.CallTo(() => ec.ReadWord((byte)cfg.ReadRegister)).Returns((ushort)cfg.MaxSpeedValue);
var fan = new Fan(ec, cfg, 100, true);
fan.GetCurrentSpeed();
A.CallTo(() => ec.ReadWord((byte)cfg.ReadRegister)).MustHaveHappened();
Assert.Equal(100, fan.CurrentSpeed);
}