8000 fix: throw error and add tests for `ReverseNumber` by vil02 · Pull Request #1608 · TheAlgorithms/JavaScript · GitHub
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fix: throw error and add tests for ReverseNumber #1608

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Merged
merged 1 commit into from
Feb 19, 2024
Merged

fix: throw error and add tests for ReverseNumber #1608

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2 changes: 1 addition & 1 deletion Maths/ReverseNumber.js
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Original file line number Diff line number Diff line change
Expand Up @@ -10,7 +10,7 @@
const ReverseNumber = (number) => {
// firstly, check that input is a number or not.
if (typeof number !== 'number') {
return new TypeError('Argument is not a number.')
throw new TypeError('Argument is not a number.')
}
// A variable for storing the reversed number.
let reverseNumber = 0
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16 changes: 16 additions & 0 deletions Maths/test/ReverseNumber.test.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,16 @@
import { ReverseNumber } from '../ReverseNumber'

describe('ReverseNumber', () => {
it.each([
[0, 0],
[10, 1],
[123, 321],
[100001, 100001]
])('check with %j', (input, expected) => {
expect(expected).toEqual(ReverseNumber(input))
})

it('should throw when input is not a number', () => {
expect(() => ReverseNumber('100')).toThrowError()
})
})
0