POST request payload/body is null

[tonycchung]

Hello! Thank you for this adapter - it works great for recording GET requests but I am having trouble with POST requests - namely getting the request body to be passed along through polly.

I am configuring the adapter with playwright by overriding the playwright page fixture like so:

import { test as base } from "@playwright/test";
import { Polly } from "@pollyjs/core";
import FSPersister from "@pollyjs/persister-fs";
import { PlaywrightAdapter } from "polly-adapter-playwright";

const test = base.extend<{ polly: Polly }>({
  page: async ({ page }, use, testInfo) => {
    Polly.register(PlaywrightAdapter);
    Polly.register(FSPersister);

    const polly = new Polly(testInfo.titlePath[0], {
      adapters: ["playwright"],
      adapterOptions: {
        playwright: {
          context: page,
        },
      },
      recordFailedRequests: true,
      persister: "fs",
      persisterOptions: {
        fs: {
          recordingsDir: "./tests/recordings",
        },
      },
      recordIfMissing: true,
      matchRequestsBy: {
        headers: false,
        body: false,
      },
    });

    await use(page);
    await polly.stop();
  },
});

export default test;

I see that this is where we pass the body from the original request:
https://github.com/redabacha/polly-adapter-playwright/blob/main/src/PlaywrightAdapter.ts#L103

but when I inspect this request.postData() I am finding it always to be null, even though the original request has the body as expected which I can see in the DevTools network tab (request and payload covered up):

Do you think this is a potential issue with the playwright type not returning the correct post body data or should we be trying to grab this from elsewhere in the adapter?

thank you!

[redabacha]

hi @tonycchung!

thanks for opening this issue and i think you're indeed correct. it's highly likely that request.postData() being null is the consequence of a chromium bug unfortunately, see microsoft/playwright#6479 and microsoft/playwright#9648 for more details.

[tonycchung]

ah i see - thank you for the prompt response and links to the sources - looks like it is finally being worked on but I suppose I'll just switch to firefox or webkit for now.

Thank you so much!

Cheers