public void create_y_unit()
{
var expected = new Vector2D(0, 1);
var actual = Vector2D.CreateYUnit();
Assert.Equal(expected, actual);
}
public void unit_y_normalizes_to_self()
{
var vector = Vector2D.CreateYUnit();
var expected = new Vector2D(vector);
var actual = vector.GetNormal();
Assert.Equal(expected, actual);
}
public void unit_y_normalizes_to_self()
{
var actual = Vector2D.CreateYUnit();
var expected = new Vector2D(actual);
actual.Normalize();
Assert.Equal(expected, actual);
}