phpunit Fixtures

class HttpTest extends TestCase
{
    protected $http = null;

    protected  function setUp()
    {
        $this->http = new HttpClient();
    }

    protected  function tearDown()
    {
        $this->http = null;
    }

    public function testBasicExample()
    {
        $this->assertEquals($this->http, null);
        var_dump($this->http);
    }

class HttpTest extends TestCase
{
    protected $http = null;
	
   public static function setUpBeforeClass()
   { 
       print('setUpBeforeClass');
   }


   public static function tearDownAfterClass  ()
   { 
       print('tearDownAfterClass  ');
   }

    protected  function setUp()
    {
        $this->http = new HttpClient();
    }

    protected  function tearDown()
    {
        $this->http = null;
    }
}

PHP Fatal error:  Call to a member function connection() on a non-object in vendor\laravel\framework\src\Illuminate\Database\Eloquent\Model.php on line 3146
PHP Stack trace:
PHP   1. {main}() C:\util\phpunit.phar:0
PHP   2. PHPUnit_TextUI_Command::main() C:\util\phpunit.phar:612
PHP   3. PHPUnit_TextUI_Command->run() phar://C:/util/phpunit.phar/phpunit/TextUI/Command.php:138
PHP   4. PHPUnit_TextUI_TestRunner->doRun() phar://C:/util/phpunit.phar/phpunit/TextUI/Command.php:186
PHP   5. PHPUnit_Framework_TestSuite->run() vendor\phpunit\phpunit\src\TextUI\TestRunner.php:406
PHP   6. PHPUnit_Framework_TestCase->run() vendor\phpunit\phpunit\src\Framework\TestSuite.php:722
PHP   7. PHPUnit_Framework_TestResult->run() vendor\phpunit\phpunit\src\Framework\TestCase.php:699
PHP   8. PHPUnit_Framework_TestCase->runBare() vendor\phpunit\phpunit\src\Framework\TestResult.php:609
PHP   9. PHPUnit_Framework_TestCase->runTest() vendor\phpunit\phpunit\src\Framework\TestCase.php:743
PHP  10. ReflectionMethod->invokeArgs() vendor\phpunit\phpunit\src\Framework\TestCase.php:866

public function setUp()
	{
		//parent::setUp();
		$this->mig = new MigUtils;		
	}