public function testAnyOf()
 {
     $regEx = $this->r->anyOf(array("abc", "def", "q", $this->r->getNew()->exactly(2)->digits()))->getRegExp();
     $this->assertTrue($regEx->matches("abc"));
     $this->assertTrue($regEx->matches("def"));
     $this->assertTrue($regEx->matches("22"));
     $this->assertFalse($regEx->matches("r"));
     $this->assertFalse($regEx->matches("1"));
     $regEx = $this->r->getNew()->anyOf(array())->getRegExp();
     $this->assertTrue($regEx->matches("p"));
 }