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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.import { assertStrictEquals } from "../assert/mod.ts";import { RedBlackNode } from "./_red_black_node.ts";
Deno.test("RedBlackNode", () => {  const parent: RedBlackNode<number> = new RedBlackNode(null, 5);  const child: RedBlackNode<number> = new RedBlackNode(parent, 7);  parent.left = child;  assertStrictEquals(parent.red, true);  parent.red = false;
  assertStrictEquals(parent.parent, null);  assertStrictEquals(parent.left, child);  assertStrictEquals(parent.right, null);  assertStrictEquals(parent.value, 5);  assertStrictEquals(parent.red, false);
  assertStrictEquals(child.parent, parent);  assertStrictEquals(child.left, null);  assertStrictEquals(child.right, null);  assertStrictEquals(child.value, 7);  assertStrictEquals(child.red, true);});
Deno.test("RedBlackNode.from()", () => {  const parent: RedBlackNode<number> = new RedBlackNode(null, 5);  const child: RedBlackNode<number> = new RedBlackNode(parent, 7);  parent.left = child;  parent.red = false;
  const parentClone: RedBlackNode<number> = RedBlackNode.from(parent);  const childClone: RedBlackNode<number> = RedBlackNode.from(child);
  assertStrictEquals(parentClone.parent, null);  assertStrictEquals(parentClone.left, child);  assertStrictEquals(parentClone.right, null);  assertStrictEquals(parentClone.value, 5);  assertStrictEquals(parentClone.red, false);
  assertStrictEquals(childClone.parent, parent);  assertStrictEquals(childClone.left, null);  assertStrictEquals(childClone.right, null);  assertStrictEquals(childClone.value, 7);  assertStrictEquals(childClone.red, true);});