public function testValidateIsin() { $isin = 'US0378331005'; $no_isin = 'ZA9382189201'; $this->assertTrue(Validator::isIsin($isin)); $this->assertFalse(Validator::isIsin($no_isin)); $isin = 'DE0005810055'; $no_isin = 'DE0005810058'; $this->assertTrue(Validator::isIsin($isin)); $this->assertFalse(Validator::isIsin($no_isin)); }