Enable file downloading for Headless Chrome using TestCafe internal API

test.js

import path from 'path';
import { Selector } from 'testcafe';

async function enableDownloadForHeadlessChrome (t) {
    const browserConnection = t.testRun.browserConnection;
    const client            = browserConnection.provider.plugin.openedBrowsers[browserConnection.id].client;
    const { Network, Page } = client;

    await Promise.all([
        Network.enable(),
        Page.enable()
    ]);

    Network.requestWillBeSent((param) => {
        // console.log("Network.requestWillBeSent: " + JSON.stringify(param));
    });

    Network.responseReceived((param) => {
        // console.log("Network.responseReceived: " + JSON.stringify(param));
    });

    await Page.setDownloadBehavior({
        behavior:     'allow',
        downloadPath: path.resolve(__dirname, 'downloaded')
    });
}

fixture`test`
    .page`https://github.com/DevExpress/testcafe/`;

test('test', async t => {
    await enableDownloadForHeadlessChrome(t);
    await t.click(Selector('summary').withText('Clone or download'));
    await t.click(Selector('a').withText('Download ZIP'));

    //NOTE: please replace with string with your function which detects that the file exists
    await t.wait(60000);
})

Can you please share which version of the testcafe you are using?
When I try this code on the latest testcafe version I am getting an error that Page is undefined.

I checked this code using testcafe@1.8.8, and it works as expected. I ran the test with the following command: testcafe chrome:headless test.js.

It seems that GitHub changed its markup, so I modified the following code:

await t.click(Selector('summary').withText('Clone or download'));

Now, it looks as follows:

await t.click(Selector('summary').withText('Code'));

I this does not help, feel free to create a separate issue in the TestCafe repository using the following form: https://github.com/DevExpress/testcafe/issues/new?template=bug-report.md. Please share your example with us to demonstrate the issue.

@AlexKamaev, I'm also seeing the issue described by @Ipelypenko:

TypeError: Cannot destructure property 'Network' of 'client' as it

[2021-02-02T05:01:59.033Z]       is undefined.

@dlangerenken
We modified the internal API, so the described approach should be modified.
Check the following code to get the client instance:

    const browserConnection = t.testRun.browserConnection;
    const browser           = browserConnection.provider.plugin.openedBrowsers[browserConnection.id];
    const client            = await browser.browserClient.getActiveClient();

Awesome, thank you @AlexKamaev

Hi @AlexKamaev

Files are not downloading when testcafe scripts are running from team city using headless chrome. In local it is working fine.
Also need to set up the custom download path, can you guide me on this please.
Team City Version: 1.11.0

@LathaSan
As far as I understand this functionality is integrated in TestCafe: https://github.com/DevExpress/testcafe/blob/d3df85f2d95aa67792044e72e8f20f7e1a0504fb/src/browser/provider/built-in/dedicated/chrome/cdp-client/index.ts#L108
So, it's better to ask questions in the official repository: https://github.com/DevExpress/testcafe/issues/new/choose

await browser.browserClient.getActiveClient();
returns undefined.