addProvider(new Company($faker)); $this->faker = $faker; } /** * @link https://stackoverflow.com/questions/4242433/regex-for-ein-number-and-ssn-number-format-in-jquery/35471665#35471665 */ public function testEin() { $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); } }