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e112434dee
* Add prettier config * test: add test to check for absolute function * chore: es5 to es6 * test: add test to check mean function * test: add test for sum of digit * test: add test for factorial * test: add test for fibonnaci * test: add test for find HCF * test: add test for lcm * test: add gridget test * test: add test for mean square error * test: add test for modular binary exponentiation * test: add tests for palindrome * test: add test for pascals triangle * test: add tests for polynomial * test: add tests for prime check * test: add tests for reverse polish notation * test: add tests for sieve of eratosthenes * test: add tests for pi estimation monte carlo method * chore: move tests to test folder * chore: fix standardjs errors
36 lines
1.1 KiB
JavaScript
36 lines
1.1 KiB
JavaScript
import { calcFactorial } from '../Factorial'
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describe('calcFactorial', () => {
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it('is a function', () => {
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expect(typeof calcFactorial).toEqual('function')
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})
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it('should return a statement for value "0"', () => {
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expect(calcFactorial(0)).toBe('The factorial of 0 is 1.')
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})
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it('should return a statement for "null" and "undefined"', () => {
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const nullFactorial = calcFactorial(null)
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const undefinedFactorial = calcFactorial(undefined)
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expect(nullFactorial).toBe(
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'Sorry, factorial does not exist for null or undefined numbers.'
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)
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expect(undefinedFactorial).toBe(
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'Sorry, factorial does not exist for null or undefined numbers.'
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)
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})
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it('should not support negative numbers', () => {
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const negativeFactorial = calcFactorial(-5)
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expect(negativeFactorial).toBe(
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'Sorry, factorial does not exist for negative numbers.'
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)
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})
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it('should return the factorial of a positive number', () => {
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const positiveFactorial = calcFactorial(3)
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expect(positiveFactorial).toBe('The factorial of 3 is 6')
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})
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})
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