public void WhenComparingEqual_ReturnsZero()
{
//Prepare
Node a = new Node { Distance = 1, X = 1, Y = 1 };
Node b = new Node { Distance = 1, X = 1, Y = 1 };
Node goal = new Node { X = 5, Y = 5 };
DirectedDistanceComparer<Node> target = new DirectedDistanceComparer<Node>(goal);
//Act
int result = target.Compare(a, b);
//Verify
Assert.AreEqual(0, result);
}
public void WhenComparingSmaller_ReturnsPostive()
{
//Prepare
Node a = new Node { Distance = 1, X = 1, Y = 1 };
Node b = new Node { Distance = 1, X = 2, Y = 2 };
Node c = new Node { Distance = 1, X = 1, Y = 1 };
Node d = new Node { Distance = 2, X = 1, Y = 1 };
Node goal = new Node { X = 5, Y = 5 };
DirectedDistanceComparer<Node> target = new DirectedDistanceComparer<Node>(goal);
//Act
int result1 = target.Compare(a, b);
int result2 = target.Compare(d, c);
//Verify
Assert.IsTrue(result1 > 0);
Assert.IsTrue(result2 > 0);
}
