code: public function paintCaseStart($test_name)
      {
          if (! isset($this->size)) {
              $this->size = 1;
          }
          if (count($this->test_stack) == 0) {
              $this->paintHeader($test_name);
          }
          $this->test_stack[] = $test_name;
      }
docs: Paints the start of a test case.
  Will also paint the page header and footer if this is the first test.
  Will stash the size if the first start.
  
  @param string $test_name   Name of test that is starting.