validatorjs/spec/alpha_num-rule.js

if (typeof require !== 'undefined') {
  var Validator = require('../src/validator.js');
  var expect = require('chai').expect;
} else {
  var Validator = window.Validator;
  var expect = window.chai.expect;
}

describe('alpha_num validation rule', function() {
  it('should fail with non-alphanumeric characters', function() {
    var validator = new Validator({
      age: '$'
    }, {
      age: 'alpha_num'
    });
    expect(validator.fails()).to.be.true;
    expect(validator.passes()).to.be.false;
    expect(validator.errors.first('age')).to.equal('The age field must be alphanumeric.');
  });

  it('should pass with only alphanumeric characters', function() {
    var validator = new Validator({
      age: 'abc123'
    }, {
      age: 'alpha_num'
    });
    expect(validator.passes()).to.be.true;
    expect(validator.fails()).to.be.false;
  });

  it('should pass with only numeric characters', function() {
    var validator = new Validator({
      age: 123
    }, {
      age: 'alpha_num'
    });
    expect(validator.passes()).to.be.true;
    expect(validator.fails()).to.be.false;
  });

  it('should pass when the field is blank / optional', function() {
    var validator = new Validator({
      name: ''
    }, {
      name: 'alpha_num'
    });
    expect(validator.passes()).to.be.true;
  });

  it('should pass when the field does not exist', function() {
    var validator = new Validator({}, {
      name: 'alpha_num'
    });
    expect(validator.passes()).to.be.true;
    expect(validator.fails()).to.be.false;
  });
});