public void wrong_size_throws()
{
var a = new VectorD(5);
var b = new VectorD(3);
Assert.Throws <ArgumentOutOfRangeException>(() => a.GetDistanceSquared(b));
}
public void zero_lengths_have_zero_distance()
{
var a = new VectorD(0);
var b = new VectorD(0);
var expected = 0.0;
var actual = a.GetDistanceSquared(b);
Assert.Equal(expected, actual);
}
public void can_find_distance_in_both_directions()
{
var a = new VectorD(5);
a.Set(0, 1);
a.Set(1, 2);
a.Set(2, 3);
var b = new VectorD(5);
b.Set(1, -9);
b.Set(2, 5);
b.Set(4, 3);
var expected = a.GetDistanceSquared(b);
var actual = b.GetDistanceSquared(a);
Assert.Equal(expected, actual);
}
public void can_find_distance()
{
var a = new VectorD(5);
a.Set(0, 1);
a.Set(1, 2);
a.Set(2, 3);
var b = new VectorD(5);
b.Set(1, -9);
b.Set(2, 5);
b.Set(3, 2);
b.Set(4, 3);
var expected = 139.0;
var actual = a.GetDistanceSquared(b);
Assert.Equal(expected, actual);
}
public void null_vector_throws()
{
var a = new VectorD(5);
Assert.Throws <ArgumentNullException>(() => a.GetDistanceSquared((VectorD)null));
}