public function testValueWithSchema() {
		$result = $this->db->value(null);
		$this->assertIdentical('NULL', $result);

		$result = $this->db->value('string', array('type' => 'string'));
		$this->assertEqual("'string'", $result);

		$result = $this->db->value('true', array('type' => 'boolean'));
		$this->assertIdentical(1, $result);

		$result = $this->db->value('1', array('type' => 'integer'));
		$this->assertIdentical(1, $result);

		$result = $this->db->value('1.1', array('type' => 'float'));
		$this->assertIdentical(1.1, $result);

		$result = $this->db->value('1', array('type' => 'string'));
		$this->assertIdentical("'1'", $result);
	}