getToolkitMock example

  protected function getTestImage($load_expected = TRUE, array $stubs = []) {
    if (!$load_expected && !in_array('load', $stubs)) {
      $stubs = array_merge(['load'], $stubs);
    }

    $this->toolkit = $this->getToolkitMock($stubs);

    $this->toolkit->expects($this->any())
      ->method('getPluginId')
      ->willReturn('gd');

    if (!$load_expected) {
      $this->toolkit->expects($this->never())
        ->method('load');
    }

    $this->image = new Image($this->toolkit, $this->source);