public void Negative_PreAndPostconditionMethod_ThrowsIfArgPositive()
{
var demo = new NegativeConsumer();
Assert.Throws <PreconditionException>(() =>
demo.PreAndPostconditionMethod(100));
}
public void Negative_PreAndPostconditionMethod_DoesNotThrowIfArgAndResultNegative()
{
var demo = new NegativeConsumer();
Assert.DoesNotThrow(() =>
demo.PreAndPostconditionMethod(-100));
}
public void Negative_PreAndPostconditionMethod_ThrowsIfResult0()
{
var demo = new NegativeConsumer();
Func <string> textGenerator = () => null;
Assert.Throws <PostconditionException>(() =>
demo.PreAndPostconditionMethod(-1));
}