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fix: throw error and add tests for ReverseNumber (TheAlgorithms#1608)

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+17

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+17

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Lines changed: 1 addition & 1 deletion

Original file line number	Diff line number	Diff line change
`@@ -10,7 +10,7 @@`
`10`	`10`	`const ReverseNumber = (number) => {`
`11`	`11`	`// firstly, check that input is a number or not.`
`12`	`12`	`if (typeof number !== 'number') {`
`13`		`- return new TypeError('Argument is not a number.')`
	`13`	`+ throw new TypeError('Argument is not a number.')`
`14`	`14`	`}`
`15`	`15`	`// A variable for storing the reversed number.`
`16`	`16`	`let reverseNumber = 0`

Lines changed: 16 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,16 @@`
	`1`	`+import { ReverseNumber } from '../ReverseNumber'`
	`2`	`+`
	`3`	`+describe('ReverseNumber', () => {`
	`4`	`+ it.each([`
	`5`	`+ [0, 0],`
	`6`	`+ [10, 1],`
	`7`	`+ [123, 321],`
	`8`	`+ [100001, 100001]`
	`9`	`+ ])('check with %j', (input, expected) => {`
	`10`	`+ expect(expected).toEqual(ReverseNumber(input))`
	`11`	`+ })`
	`12`	`+`
	`13`	`+ it('should throw when input is not a number', () => {`
	`14`	`+ expect(() => ReverseNumber('100')).toThrowError()`
	`15`	`+ })`
	`16`	`+})`

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