Commit 29b1650

christian-feiTheSTL

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add test for bottom view binary tree (#147)

* add test for bottom view binary tree

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src/_DataStructures_/Trees/BinaryTree/bottom-view-binary-tree
- BottomViewBinaryTree.test.js

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	`1`	`+const BinaryTree = require("../index");`
	`2`	`+const bottomView = require('.');`
	`3`	`+`
	`4`	`+describe('Bottom View Binary Tree', () => {`
	`5`	`+ let btree`
	`6`	`+`
	`7`	`+ beforeEach(() => {`
	`8`	`+ btree = new BinaryTree([1, 2, 3, 4, 5, 6]);`
	`9`	`+ });`
	`10`	`+`
	`11`	`+ it('Should determine the bottom view of a binary tree', () => {`
	`12`	`+ expect(bottomView(btree)).toEqual([6, 2, 3, 4]);`
	`13`	`+ });`
	`14`	`+ it('Should handle null binary tree', () => {`
	`15`	`+ expect(bottomView(null)).toEqual([]);`
	`16`	`+ });`
	`17`	`+});`

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