55 lines
1.8 KiB
JavaScript
55 lines
1.8 KiB
JavaScript
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/* global describe expect it */
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const { validate } = require('./validate');
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const invalidCharError = {
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valid: false,
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error: 'contains invalid characters'
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};
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const validationSuccess = { valid: true, error: null };
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const usernameTooShort = { valid: false, error: 'is too short' };
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function inRange(num, range) {
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return num >= range[0] && num <= range[1];
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}
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describe('validate', () => {
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it('rejects strings with less than 3 characters', () => {
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expect(validate('')).toStrictEqual(usernameTooShort);
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expect(validate('12')).toStrictEqual(usernameTooShort);
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expect(validate('a')).toStrictEqual(usernameTooShort);
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expect(validate('123')).toStrictEqual(validationSuccess);
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});
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it('rejects non-ASCII characters', () => {
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expect(validate('👀👂👄')).toStrictEqual(invalidCharError);
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});
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it('accepts alphanumeric characters', () => {
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expect(validate('abcdefghijklmnopqrstuvwxyz0123456789')).toStrictEqual(
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validationSuccess
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);
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});
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it('accepts hyphens and underscores', () => {
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expect(validate('a-b')).toStrictEqual(validationSuccess);
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expect(validate('a_b')).toStrictEqual(validationSuccess);
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});
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it('rejects all other ASCII characters', () => {
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const whiteList = ['-', '_', '+'];
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const numbers = [48, 57];
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const upperCase = [65, 90];
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const lowerCase = [97, 122];
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const base = 'user';
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const finalCode = 127;
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for (let code = 0; code <= finalCode; code++) {
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let char = String.fromCharCode(code);
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let expected = invalidCharError;
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if (whiteList.includes(char)) expected = validationSuccess;
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if (inRange(code, numbers)) expected = validationSuccess;
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if (inRange(code, upperCase)) expected = validationSuccess;
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if (inRange(code, lowerCase)) expected = validationSuccess;
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expect(validate(base + char)).toStrictEqual(expected);
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}
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});
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});
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