Pinq\ITraversable::contains PHP 메소드

    public function contains($value);

 /**
  * @dataProvider assocOneToTen
  */
 public function testThatContainsReturnsWhetherItContainsAnIdenticalElement(\Pinq\ITraversable $traversable, array $data)
 {
     $this->assertTrue($traversable->contains(1));
     $this->assertFalse($traversable->contains('1'));
     $this->assertTrue($traversable->contains(10));
     $this->assertFalse($traversable->contains('10'));
     $this->assertFalse($traversable->contains(-1));
     $this->assertFalse($traversable->contains(0));
     $this->assertFalse($traversable->contains(11));
 }