/*if switch is on and temperature is low, according to common sense, return true*/
public void LowTempWithSwitchOn(float temp, bool expected)
{
bool result = Heater.SetState(temp, switch_on);
Assert.AreEqual(expected, result);
}
/*if switch is off and temperatrue is high,according to common sense, return false*/
public void HighTempWithSwitchOff(float temp, bool expected)
{
bool result = Heater.SetState(temp, switch_off);
Assert.AreEqual(expected, result);
}
