<?php

require_once 'test_helper.php';

class FilterTest extends PHPUnit_Framework_TestCase
{
  protected $compiler = null;

  public function __construct()
  {
    $this->compiler = new Compiler();
  }

  public function testAttributes()
  {
    $actual = $this->compiler->parseFile(template('filters.haml'));
    $this->assertEquals(contents('filters_expected.html'), $actual);
  }
}

<?php

require_once 'test_helper.php';

class AttributesTest extends PHPUnit_Framework_TestCase
{
  protected $compiler = null;

  public function __construct()
  {
    $this->compiler = new Compiler();
  }

  public function testAttributes()
  {
    $actual = $this->compiler->parseFile(template('filters.haml'));
    $this->assertEquals(contents('filters_expected.html'), $actual);
  }
}

--- 
+++ 
@@ -2,7 +2,7 @@
 
 require_once 'test_helper.php';
 
-class AttributesTest extends PHPUnit_Framework_TestCase
+class FilterTest extends PHPUnit_Framework_TestCase
 {
   protected $compiler = null;
 
Remove duplicated attribute test class
