2021-11-04 13:34:52 +05:30
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import { validateCreditCard } from '../ValidateCreditCard'
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describe('Validate credit card number', () => {
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it('should throw error if card number is boolean', () => {
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const invalidCC = true
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expect(() => validateCreditCard(invalidCC)).toThrow(
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'The given value is not a string'
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)
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})
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it('returns true if the credit card number is valid', () => {
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const validCreditCard = '4111111111111111'
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const validationResult = validateCreditCard(validCreditCard)
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expect(validationResult).toBe(true)
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})
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it('should throw an error on non-numeric character in given credit card number', () => {
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const nonNumericCCNumbers = ['123ABCDEF', 'ABCDKDKD', 'ADS232']
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2023-10-03 23:08:19 +02:00
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nonNumericCCNumbers.forEach((nonNumericCC) =>
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expect(() => validateCreditCard(nonNumericCC)).toThrow(
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`${nonNumericCC} is an invalid credit card number because ` +
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'it has nonnumerical characters.'
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)
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)
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2021-11-04 13:34:52 +05:30
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})
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it('should throw an error on credit card with invalid length', () => {
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const ccWithInvalidLength = ['41111', '4111111111111111111111']
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2023-10-03 23:08:19 +02:00
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ccWithInvalidLength.forEach((invalidCC) =>
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expect(() => validateCreditCard(invalidCC)).toThrow(
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`${invalidCC} is an invalid credit card number because ` +
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'of its length.'
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)
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)
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2021-11-04 13:34:52 +05:30
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})
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it('should throw an error on credit card with invalid start substring', () => {
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2023-10-03 23:08:19 +02:00
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const ccWithInvalidStartSubstring = [
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'12345678912345',
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'23456789123456',
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'789123456789123',
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'891234567891234',
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'912345678912345',
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'31345678912345',
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'32345678912345',
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'33345678912345',
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'38345678912345'
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]
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ccWithInvalidStartSubstring.forEach((invalidCC) =>
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expect(() => validateCreditCard(invalidCC)).toThrow(
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`${invalidCC} is an invalid credit card number because ` +
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'of its first two digits.'
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)
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)
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2021-11-04 13:34:52 +05:30
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})
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it('should throw an error on credit card with luhn check fail', () => {
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const invalidCCs = ['411111111111111', '371211111111111', '49999999999999']
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2023-10-03 23:08:19 +02:00
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invalidCCs.forEach((invalidCC) =>
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expect(() => validateCreditCard(invalidCC)).toThrow(
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`${invalidCC} is an invalid credit card number because ` +
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'it fails the Luhn check.'
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)
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)
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2021-11-04 13:34:52 +05:30
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})
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})
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