如果你想测试navigator.share()函数是否被调用，你可以在浏览器上下文中模拟它，并检查模拟函数是否在操作后被调用，如

await page.evaluateOnNewDocument(() => {
    window['isNavigatorShareCalled'] = false;
    window.navigator.share = async (data) => {
      window['isNavigatorShareCalled'] = true;
      window['shareData'] = data;
    };
  });

  await page.goto(yourSite);

  await page.waitForSelector(trigger).then(el => el.click());

  const isShareCalled = await page.evaluate(() => {
    return window['isNavigatorShareCalled'];
  });

  expect(isShareCalled).toBe(true);
  // check data if needed

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如果你需要调用native share，你可以在mock中调用。