 );
    if (initialHTMLWithClass != t.initialHTML) {
      promise_test(async () => {
        utils.setupEditingHost(initialHTMLWithClass);
        await (testingBackspace ? utils.sendBackspaceKey() : utils.sendDeleteKey());
        utils.normalizeStyleAttributeValues();
        const expectedHTMLs = [];
        for (const styleAndOrClassAttr of [
          `style="${rightWhiteSpace}"`,
          `class="${rightWhiteSpaceClass}" style="${rightWhiteSpace}"`,
          `style="${rightWhiteSpace}" class="${rig