public void findNonExistentData() { BinaryTree aTree = new BinaryTree(4); aTree.addToTree(2); aTree.addToTree(6); aTree.addToTree(1); aTree.addToTree(3); aTree.addToTree(5); aTree.addToTree(8); aTree.addToTree(7); Assert.IsFalse(aTree.dataExist(10)); }