public void When_a_Wardrobe_has_less_space_than_the_element_needs_it_should_throw_an_exception()
{
var wardrobe = Wardrobe.Create(40);
var element = Element.Create(50);
Assert.Throws <ApplicationException>(() => wardrobe.AddElement(element));
}
public void When_a_Wardrobe_has_one_50_Element_its_RemainingSpace_should_be_reduced_by_50()
{
var wardrobe = Wardrobe.Create(250);
var element = Element.Create(50);
wardrobe.AddElement(element);
Assert.Equal(200, wardrobe.RemainingSpace);
}
public static Wardrobe Create(int width)
{
if (width < 0)
{
throw new ApplicationException();
}
var wardrobe = new Wardrobe(width);
return(wardrobe);
}
public Wardrobe[] FindMatchingOptions(int wardrobeWidth)
{
var wardrobe = Wardrobe.Create(wardrobeWidth);
var added = false;
do
{
added = TryAddElement(wardrobe);
} while (added);
return(new[] { wardrobe });
}
private Element FindNextFittingElement(Wardrobe wardrobe)
{
var orderedElements = elements.OrderByDescending(x => x.width);
foreach (var el in orderedElements)
{
if (el.fits(wardrobe.RemainingSpace))
{
return(el);
}
}
return(null);
}
private bool TryAddElement(Wardrobe wardrobe)
{
var nextElement = FindNextFittingElement(wardrobe);
if (nextElement != null)
{
wardrobe.AddElement(nextElement);
return(true);
}
else
{
return(false);
}
}
public void When_using_a_greedy_strategy_then_the_widest_element_should_be_choosen()
{
var el50 = Element.Create(50);
var elements = new[] { el50, Element.Create(40) };
var strategy = new GreedyStrategy(elements);
var wardrobeWidth = 50;
Wardrobe[] options = strategy.FindMatchingOptions(wardrobeWidth);
var wardrobe = Wardrobe.Create(50);
wardrobe.AddElement(el50);
var expected = new[] { wardrobe };
Assert.Equal(new[] { el50 }, options[0].Elements);
}
public void When_using_a_greedy_strategy_and_the_widest_element_is_to_big_then_the_secound_smallest_element_should_be_added()
{
var el50 = Element.Create(50);
var el40 = Element.Create(40);
var elements = new[] { el50, el40 };
var strategy = new GreedyStrategy(elements);
var wardrobeWidth = 49;
Wardrobe[] options = strategy.FindMatchingOptions(wardrobeWidth);
var wardrobe = Wardrobe.Create(wardrobeWidth);
wardrobe.AddElement(el40);
var expected = new[] { wardrobe };
Assert.Equal(new[] { el40 }, options[0].Elements);
}
public void When_Creating_a_Wardrobe_a_positive_width_should_be_accepted()
{
var wardrobe = Wardrobe.Create(250);
Assert.Equal(250, wardrobe.width);
}
public void wordrobe_should_return_remaining_space()
{
var wardrobe = Wardrobe.Create(250);
Assert.Equal(250, wardrobe.RemainingSpace);
}
public void When_Creating_a_Wardrobe_a_negative_width_should_be_rejected()
{
Assert.Throws <ApplicationException>(() => Wardrobe.Create(-10));
}
