public function testSelectFields()
{
$query = new Query("TestObject");
$query->select("name", "color", "foo", "bar");
$out = $query->encode();
$this->assertEquals("name,color,foo,bar", $out["keys"]);
// it accepts variable number of keys
$query = new Query("TestObject");
$query->select("name");
$query->select("color");
$query->select("foo", "bar");
$out = $query->encode();
$this->assertEquals("name,color,foo,bar", $out["keys"]);
// it also accepts an array of keys
$query = new Query("TestObject");
$query->select(array("name", "color", "foo", "bar"));
$out = $query->encode();
$this->assertEquals("name,color,foo,bar", $out["keys"]);
// it can exclude fields too
$query->select("-image");
$out = $query->encode();
$this->assertEquals("name,color,foo,bar,-image", $out["keys"]);
}