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Merge pull request knaxus#50 from dwncy/feature/test-smallest-number

Unit Test for Get Smallest Common Number

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	`1`	`+const { getSmallestCommonNumber } = require('.');`
	`2`	`+`
	`3`	`+describe('Get common smallest number between two integer arrays', () => {`
	`4`	`+ it('Should return -1 when both has empty array', () => {`
	`5`	`+ const arr1 = [];`
	`6`	`+ const arr2 = [];`
	`7`	`+`
	`8`	`+ expect(getSmallestCommonNumber(arr1, arr2)).toEqual(-1);`
	`9`	`+ });`
	`10`	`+`
	`11`	`+ it('Should return -1 when no common between two integer arrays', () => {`
	`12`	`+ const arr1 = [1, 3, 5];`
	`13`	`+ const arr2 = [2, 4, 6];`
	`14`	`+`
	`15`	`+ expect(getSmallestCommonNumber(arr1, arr2)).toEqual(-1);`
	`16`	`+ });`
	`17`	`+`
	`18`	`+ it('Should return common smallest number between unsorted two integer arrays', () => {`
	`19`	`+ const arr1 = [-10, 3];`
	`20`	`+ const arr2 = [2, -10, 7];`
	`21`	`+`
	`22`	`+ expect(getSmallestCommonNumber(arr1, arr2)).toEqual(-10);`
	`23`	`+ });`
	`24`	`+`
	`25`	`+ it('Should return common smallest number between sorted two integer arrays', () => {`
	`26`	`+ const arr1 = [2, 3];`
	`27`	`+ const arr2 = [2, 5, 7];`
	`28`	`+`
	`29`	`+ expect(getSmallestCommonNumber(arr1, arr2)).toEqual(2);`
	`30`	`+ });`
	`31`	`+});`

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