1234567891011121314151617181920212223242526272829303132333435
import { assertEquals } from "https://deno.land/std@0.157.0/testing/asserts.ts";
import isUnivalTree from "./index.ts";
Deno.test("univalued-binary-tree", () => {    assertEquals(        false,        isUnivalTree({            val: 2,            left: {                val: 2,                left: { val: 5, left: null, right: null },                right: { val: 2, left: null, right: null },            },            right: { val: 2, left: null, right: null },        }),    );    assertEquals(        true,        isUnivalTree({            val: 1,            left: {                val: 1,                left: { val: 1, left: null, right: null },                right: { val: 1, left: null, right: null },            },            right: {                val: 1,                left: null,                right: { val: 1, left: null, right: null },            },        }),    );});