class Product {
function getList() {
$db =& DbConnectionBroker::getConnection();
//...
}
}
class DbConnectionBroker {
function &getConnection() {
return new MysqlConnection(DB_USER, DB_PW, DB_NAME);
}
}
class Color {
var $r=0;
var $g=0;
var $b=0;
function Color($red=0, $green=0, $blue=0)
{
$this->r =$red;
$this->g = $green;
$this->b = $blue;
}
function getRgb() {
return sprintf(‘#%02X%02X%02X’, $this->r, $this->g, $this->b);
}
}
function testColorBoundaries() {
$color =& new Color(-1);
$this->assertErrorPattern(‘/out.*0.*255/i’);
$color =& new Color(1111);
$this->assertErrorPattern(‘/out.*0.*255/i’);
}
class Color {
var $r=0;
var $g=0;
var $b=0;
function Color($red=0, $green=0, $blue=0) {
$red = (int)$red;
if ($red < 0 || $red > 255) {
trigger_error(“color ‘$color’ out of bounds, “
.”please specify a number between 0 and 255”);
}
$this->r = $red;
$green = (int)$green;
if ($green < 0 || $green > 255) {
trigger_error(“color ‘$color’ out of bounds, “
.”please specify a number between 0 and 255”);
}
$this->g = $green;
$blue = (int)$blue;
if ($blue < 0 || $blue > 255) {
trigger_error(“color ‘$color’ out of bounds, “
.”please specify a number between 0 and 255”);
}
$this->b = $blue;
}
function getRgb() {
return sprintf(‘#%02X%02X%02X’, $this->r, $this->g, $this->b);
}
}
class Color {
var $r=0;
var $g=0;
var $b=0;
function Color($red=0, $green=0, $blue=0) {
$this->r = $this->validateColor($red);
$this->g = $this->validateColor($green);
$this->b = $this->validateColor($blue);
}
function validateColor($color) {
$check = (int)$color;
if ($check < 0 || $check > 255) {
trigger_error(“color ‘$color’ out of bounds, “
.”please specify a number between 0 and 255”);
} else {
return $check;
}
}
function getRgb() {
return sprintf(‘#%02X%02X%02X’, $this->r, $this->g, $this->b);
}
}作者: superadmin 时间: 2008-6-13 14:46
创建工厂来简化对象的创建过程
function TestBadColor() {
$this->assertIsA($o =& CrayonBox::getColor(‘Lemon’), ‘Color’);
$this->assertErrorPattern(‘/lemon/i’);
// got black instead
$this->assertEqual(‘#000000’, $o->getRgb());
}
以下是一个可以满足测试的CrayonBox类：
class CrayonBox {
/**
* Return valid colors as color name => array(red, green, blue)
*
* Note the array is returned from function call
* because we want to have getColor able to be called statically
* so we can’t have instance variables to store the array
* @return array
*/
function colorList() {
return array(
‘black’ => array(0, 0, 0)
,’green’ => array(0, 128, 0)
// the rest of the colors ...
,’aqua’ => array(0, 255, 255)
);
}
/**
* Factory method to return a Color
* @param string $color_name the name of the desired color
* @return Color
*/
function &getColor($color_name) {
$color_name = strtolower($color_name);
if (array_key_exists($color_name,
$colors = CrayonBox::colorList())) {
$color = $colors[$color_name];
return new Color($color[0], $color[1], $color[2]);
}
trigger_error(“No color ‘$color_name’ available”);
// default to black
return new Color;
}
class Street extends Property {
protected $base_rent;
public $color;
public function setRent($rent) {
$this->base_rent = new Dollar($rent);
}
protected function calcRent() {
if ($this->game->hasMonopoly($this->owner, $this->color)) {
return $this->base_rent->add($this->base_rent);
}
return $this->base_rent;
}
}
class RailRoad extends Property {
protected function calcRent() {
switch($this->game->railRoadCount($this->owner)) {
case 1: return new Dollar(25);
case 2: return new Dollar(50);
case 3: return new Dollar(100);
case 4: return new Dollar(200);
default: return new Dollar;
}
}
}
class Utility extends Property {
protected function calcRent() {
switch ($this->game->utilityCount($this->owner)) {
case 1: return new Dollar(4*$this->game->lastRoll());
case 2: return new Dollar(10*$this->game->lastRoll());
default: return new Dollar;
}
}
}
class Assessor {
protected $game;
public function setGame($game) { $this->game = $game; }
public function getProperty($name) {
$prop_info = new PropertyInfo($this->prop_info[$name]);
switch($prop_info->type) {
case ‘Street’:
$prop = new Street($this->game, $name, $prop_info->price);
$prop->color = $prop_info->color;
$prop->setRent($prop_info->rent);
return $prop;
case ‘RailRoad’:
return new RailRoad($this->game, $name, $prop_info->price);
break;
case ‘Utility’:
return new Utility($this->game, $name, $prop_info->price);
break;
default: //should not be able to get here
}
}
protected $prop_info = array(/* ... */);
}
class Assessor {
protected $game;
public function setGame($game) { $this->game = $game; }
public function getProperty($name) {
$prop_info = $this->getPropInfo($name);
switch($prop_info->type) {
case ‘Street’:
$prop = new Street($this->game, $name, $prop_info->price);
$prop->color = $prop_info->color;
$prop->setRent($prop_info->rent);
return $prop;
case ‘RailRoad’:
return new RailRoad($this->game, $name, $prop_info->price);
break;
case ‘Utility’:
return new Utility($this->game, $name, $prop_info->price);
break;
default: //should not be able to get here
}
}
protected $prop_info = array(/* ... */);
protected function getPropInfo($name) {
if (!array_key_exists($name, $this->prop_info)) {
throw new InvalidPropertyNameException($name);
}
return new PropertyInfo($this->prop_info[$name]);
}
}
