<?phpnamespaceFaker\Test\Provider\en_US;useFaker\Provider\en_US\Company;useFaker\Generator;classCompanyTestextends\PHPUnit_Framework_TestCase{/** * @var Generator */private$faker;publicfunctionsetUp(){$faker=newGenerator();$faker->addProvider(newCompany($faker));$this->faker=$faker;}/** * @link https://stackoverflow.com/questions/4242433/regex-for-ein-number-and-ssn-number-format-in-jquery/35471665#35471665 */publicfunctiontestEin(){$number=$this->faker->ein;// should be in the format ##-#######, with a valid prefix$this->assertRegExp('/^(0[1-6]||1[0-6]|2[0-7]|[35]\d|[468][0-8]|7[1-7]|9[0-58-9])-\d{7}$/',$number);}}