public static ITemperature Parse(double value, string type)
{
ITemperature result;
switch (type.ToLower())
{
case "c":
case "celsius":
result = new CelsiusTemperature(value);
break;
case "f":
case "fahrenheit":
result = new FahrenheitTemperature(value);
break;
case "k":
case "kelvin":
result = new KelvinTemperature(value);
break;
default:
throw new Exception("Could not determine type " + type);
}
return result;
}
public void ToStringShouldWork(double value, string expected)
{
var fahrenheit = new FahrenheitTemperature(value);
var actual = fahrenheit.ToString();
Assert.That(actual, Is.EqualTo(expected));
}
public void ItShouldReturnItselfForFahrenheit()
{
var fahrenheit = new FahrenheitTemperature(0);
var newfahrenheit = fahrenheit.Fahrenheit;
Assert.That(fahrenheit, Is.SameAs(newfahrenheit));
}
public void ItShouldConvertToKelvinProperly(double before, double after)
{
var fahrenheit = new FahrenheitTemperature(before);
var kelvin = fahrenheit.Kelvin;
Assert.That(kelvin.Value, Is.EqualTo(after).Within(0.001));
}
public void ItShouldConvertToCelsiustProperly(double before, double after)
{
var fahrenheit = new FahrenheitTemperature(before);
var celsius = fahrenheit.Celsius;
Assert.That(celsius.Value, Is.EqualTo(after).Within(0.001));
}
public void ItAddsCorrectly(double before, double amount, double after)
{
var initial = new FahrenheitTemperature(before);
var result = initial.Add(amount);
Assert.That(initial, Is.Not.SameAs(result));
Assert.That(initial.Value, Is.EqualTo(before));
Assert.That(result.Value, Is.EqualTo(after));
}