gistfile1.php

Dynamic accessors

<?php

error_reporting(E_ALL);

class String {
    static public function capitalize($s) {
        if (!empty($s)) return $s = strtoupper($s[0]).strtolower(substr($s,1));            
        return $s;
    }    
    static public function camelize($s) {
        return $s = join('', array_map('String::capitalize', explode('_', $s)));
    }  
    static public function decamelize($s) {       
        return $s = strtolower(preg_replace('/([a-z])([A-Z])/', '$1_$2', $s));
    }
}

class DynamicAccessor {
    private $attributes = array('visitor_count' => 0);
    
    function __get($name) {
        foreach (array('_get_'.$name, '_get'.String::camelize($name)) as $method) {
            if (method_exists($this, $method)) {
                return $this->$method();        
            }
        }
    }
    
    function __set($name, $opts) {
        foreach (array('_set_'.$name, '_set'.String::camelize($name)) as $method) {
            if (method_exists($this, $method)) {
                return $this->$method($opts);   
            }
        }
    }
    
    function __call($name, $opts=null) {
        if (preg_match('/^[gs]et[A-Z]/', $name)) { 
            $name = '_'.String::decamelize($name);
            if ($name[1]=='s') {
                $opts = $opts[0];
            }           
            return $this->$name($opts);             
        } elseif (preg_match('/^[gs]et_[a-z]/', $name)) { 
            $name = "_$name";
            if ($name[1]=='s') {
                $opts = $opts[0];
            }           
            return $this->$name($opts);                         
        } else {
            $this>$name($opts);
        }
        
    }
    
    # PRIVATE
   
    private function _get_visitor_count($opts=null) {
        return $this->attributes['visitor_count'];
    }

    private function _set_visitor_count($val) {
        $this->attributes['visitor_count'] = $val;
    }
}

require_once 'PHPUnit/Framework.php';

class StringTest extends  PHPUnit_Framework_TestCase {
   public function test_camelize() {
       $this->assertEquals('', String::camelize(''));
       $this->assertEquals('Abc', String::camelize('abc'));
       $this->assertEquals('AbcDefGhi', String::camelize('abc_def_ghi'));
   }
   public function test_camelize_in_place() {
       $s = ''; String::camelize(&$s);
       $this->assertEquals('', $s);
    
       $s = 'abc'; String::camelize(&$s);
       $this->assertEquals('Abc', $s);
    
       $s = 'abc_def_ghi'; String::camelize(&$s);
       $this->assertEquals('AbcDefGhi', $s);
   }
   public function test_decamelize() {
       $this->assertEquals('', String::decamelize(''));
       $this->assertEquals('abc', String::decamelize('Abc'));
       $this->assertEquals('abc_def_ghi', String::decamelize('AbcDefGhi'));
   }
   public function test_decamelize_in_place() {
       $s = ''; String::decamelize(&$s);
       $this->assertEquals('', $s);
    
       $s = 'Abc'; String::decamelize(&$s);
       $this->assertEquals('abc', $s);
           
       $s = 'AbcDefGhi'; String::decamelize(&$s);
       $this->assertEquals('abc_def_ghi', $s);
   }
   public function test_capitalize() {
       $this->assertEquals('', String::capitalize(''));
       $this->assertEquals('Abc', String::capitalize('aBC'));
       $this->assertEquals('Abc_def', String::capitalize('abc_def'));
   }
   public function test_capitalize_in_place() {
       $s = ''; String::capitalize(&$s);
       $this->assertEquals('', $s);
       
       $s = 'Abc'; String::capitalize(&$s);
       $this->assertEquals('Abc', $s);
       
       $s = 'Abc_def'; String::capitalize(&$s);
       $this->assertEquals('Abc_def', $s);
   }
}      

class DynamicAccesorTest extends PHPUnit_Framework_TestCase {
    function setUp() {
        $this->da = new DynamicAccessor();        
    }
    public function test_transparent_accessor() {
        $this->da->visitor_count = 123;
        $this->assertEquals(123, $this->da->visitor_count);
    }     
    public function test_transparent_setter_and_getter_method() {
        $this->da->visitor_count = 123;
        $this->assertEquals(123, $this->da->get_visitor_count());
    }   
    public function test_transparent_setter_and_camelized_getter_method() {
        $this->da->visitor_count = 123;
        $this->assertEquals(123, $this->da->getVisitorCount());
    }       
    public function test_camelized_setter_and_transparent_getter() {
       $this->da->setVisitorCount(456);
       $this->assertEquals(456, $this->da->visitor_count);
    }     
    public function test_camelized_setter_and_getter() {
       $this->da->setVisitorCount(456);
       $this->assertEquals(456, $this->da->get_visitor_count());
    }     
    public function test_camelized_setter_and_camelized_getter() {
       $this->da->setVisitorCount(456);
       $this->assertEquals(456, $this->da->getVisitorCount());
    }     
}  
     
?>