public void Builder_Without_Path_Should_Throw_IndexOutOfRangeException()
{
var model = new Builder();
var pathHistory = new PathHistory(model);
Assert.Throws <IndexOutOfRangeException>(() => pathHistory.GetOld());
}
public void Builder_With_Multiple_Steps(int skipOldStepCount)
{
var model = new Builder();
var pathHistory = new PathHistory(model);
model.Path.Increase(new Pillar(0, 0));
model.Path.Increase(new Pillar(2, 1));
model.Path.Increase(new Pillar(4, 2));
model.Path.Increase(new Pillar(6, 3));
model.Path.Increase(new Pillar(8, 4));
for (int i = 0; i < skipOldStepCount; i++)
{
pathHistory.GetOld();
}
var actual = pathHistory.GetOld();
Assert.That(actual.X, Is.EqualTo(skipOldStepCount * 2), "pillar.X");
Assert.That(actual.Y, Is.EqualTo(skipOldStepCount), "pillar.Y");
}
public void Builder_With_One_Step_Should_Return_The_First_Step()
{
var model = new Builder();
var pathHistory = new PathHistory(model);
model.Path.Increase(new Pillar(3, 10));
var actual = pathHistory.GetOld();
Assert.That(actual.X, Is.EqualTo(3), "pillar.X");
Assert.That(actual.Y, Is.EqualTo(10), "pillar.Y");
}