public function testMatchesBasic() {
		$a = array(
			array('Article' => array('id' => 1, 'title' => 'Article 1')),
			array('Article' => array('id' => 2, 'title' => 'Article 2')),
			array('Article' => array('id' => 3, 'title' => 'Article 3'))
		);

		$this->assertTrue(Set::matches($a[1]['Article'], array('id=2')));
		$this->assertFalse(Set::matches($a[1]['Article'], array('id>2')));
		$this->assertTrue(Set::matches($a[1]['Article'], array('id>=2')));
		$this->assertFalse(Set::matches($a[1]['Article'], array('id>=3')));
		$this->assertTrue(Set::matches($a[1]['Article'], array('id<=2')));
		$this->assertFalse(Set::matches($a[1]['Article'], array('id<2')));
		$this->assertTrue(Set::matches($a[1]['Article'], array('id>1')));
		$this->assertTrue(Set::matches($a[1]['Article'], array('id>1', 'id<3', 'id!=0')));

		$this->assertTrue(Set::matches(array(), array('3'), 3));
		$this->assertTrue(Set::matches(array(), array('5'), 5));

		$this->assertTrue(Set::matches($a[1]['Article'], array('id')));
		$this->assertTrue(Set::matches($a[1]['Article'], array('id', 'title')));
		$this->assertFalse(Set::matches($a[1]['Article'], array('non-existant')));

		$this->assertTrue(Set::matches($a, '/Article[id=2]'));
		$this->assertFalse(Set::matches($a, '/Article[id=4]'));
		$this->assertTrue(Set::matches($a, array()));
	}