public function testGeneratePassword()
 {
     $this->_user->save();
     $password1 = $this->_service->generatePassword(11);
     $password2 = $this->_service->generatePassword(11);
     $password3 = $this->_service->generatePassword();
     $this->assertNotEquals($password1, $password2);
     $this->assertEquals(11, strlen($password1));
     $this->assertEquals(10, strlen($password3));
 }