Playwright error (Target closed) after navigation

Question

I'm trying something really simple:

• Navigate to google.com
• Fill the search box with "cheese"
• Press enter on the search box
• Print the text for the title of the first result

So simple, but I can't get it to work. This is the code:

const playwright = require('playwright');

(async () => {
  for (const browserType of ['chromium', 'firefox', 'webkit']) {
    const browser = await playwright[browserType].launch();
    try {
      const context = await browser.newContext();
      const page = await context.newPage();
      await page.goto('https://google.com');
      await page.fill('input[name=q]', 'cheese');
      await page.press('input[name=q]', 'Enter');
      await page.waitForNavigation();

      page.waitForSelector('div#rso h3')
          .then(firstResult => console.log(`${browserType}: ${firstResult.textContent()}`))
          .catch(error => console.error(`Waiting for result: ${error}`));
    } catch(error) {
      console.error(`Trying to run test on ${browserType}: ${error}`);
    } finally {
      await browser.close();
    }
  }
})();

At first I tried to get the first result with a page.$() but it didn't work. After investigating the issue a little bit I discovered that page.waitForNavigation() that I thought would be the solution, but it isn't.

I'm using the latest playwright version: 1.0.2.

Answer 1

It seems to me that the only problem was with your initial promise composition, I've just refactored the promise to async/await and using page.$eval to retrieve the textContent it works perfectly, there are no target closed errors anymore.

try {
      const context = await browser.newContext();
      const page = await context.newPage();
      await page.goto('https://google.com');
      await page.fill('input[name=q]', 'cheese');
      await page.press('input[name=q]', 'Enter');
      await page.waitForNavigation();

      // page.waitForSelector('div#rso h3').then(firstResult => console.log(`${browserType}: ${firstResult.textContent()}`)).catch(error => console.error(`Waiting for result: ${error}`));

      await page.waitForSelector('div#rso h3');
      const firstResult = await page.$eval('div#rso h3', firstRes => firstRes.textContent);
      console.log(`${browserType}: ${firstResult}`)
    } catch(error) {
      console.error(`Trying to run test on ${browserType}: ${error}`);
    } finally {
      await browser.close();
    }
  }

Output:

chrome: Cheese – Wikipedia
firefox: Cheese – Wikipedia
webkit: Cheese – Wikipedia

Note: chrome and webkit works, firefox fails on waitForNavigation for me. If I replaced it with await page.waitForTimeout(5000); firefox worked as well. It might be an issue with playwright's Firefox support for the navigation promise.