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import { assertEquals } from "https://deno.land/std@0.157.0/testing/asserts.ts";
import isSymmetric from "./index.ts";
Deno.test("symmetric-tree", () => {    assertEquals(        [            {                val: 1,                left: {                    val: 2,                    left: { val: 3, left: null, right: null },                    right: { val: 4, left: null, right: null },                },                right: {                    val: 2,                    left: { val: 4, left: null, right: null },                    right: { val: 3, left: null, right: null },                },            },            {                val: 1,                left: {                    val: 2,                    left: null,                    right: { val: 3, left: null, right: null },                },                right: {                    val: 2,                    left: null,                    right: { val: 3, left: null, right: null },                },            },        ].map(isSymmetric),        [true, false],    );});