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Problem017.test.js

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import { countNumberWordLength } from '../Problem017.js'

describe('Number letter count', () => {

test.each([

[5, 19],

[100, 864],

[1000, 21124]

])('Number letter count from 1 to %i', (n, expected) => {

expect(countNumberWordLength(n)).toBe(expected)

})

test.each([

['test', 'Invalid input, please provide valid number'],

[0, 'Please provide number greater that 1']

])('Should throw an error for input %i', (n, expected) => {

expect(() => countNumberWordLength(n)).toThrowError(expected)

})

})