theintern/intern

Intern JavaScript testing framework | http://theintern.io

Jason Cheatham

@jason0x43

It would be useful to be able to easily make use of the environment variable, though. The Windows release notes point out that it points to the driver exe. so that's useful to know. I'll create an issue for it...

Dylan Staley

@dstaley

So intern always downloads the latest version of the driver? Would it make sense to provide an option to download the driver that matches the installed version of Chrome?

Because I can pin to v81 to get tests passing now, but in a few days when the environment updates to v83 I'm gonna have the same issue.

I guess I could, in CI, interpolate the chrome version into the config?

Jason Cheatham

@jason0x43

Intern does download the latest version as that's the most common use case. Detecting the local version would be useful, but tricky, particularly if the browser being used was in a non-standard location.

Being able to use environment variables in the config would handle the GHA case (and would be generally useful). You can already use an INTERN_ARGS environment variable to pass command line options, but it's not very ergonomic for something like this.

Dylan Staley

@dstaley

So the best solution for right now would be updating the config with the value from the CHROMEDRIVER variable?

Jason Cheatham

@jason0x43

Unfortunately, there isn't a way to configure a path to a local webdriver executable, so the best solution for the moment is to pin the version in the config. Depending on the format of their CHROMEWEBDRIVER variable, you might be able to extract the local version from that and use it to set the webdriver version.

Dylan Staley

@dstaley

Yeah that's what I'll try. I'll report the format in the issue

Jason Cheatham

@jason0x43

:thumbsup:

Dylan Staley

@dstaley

Wait, it looks like GHA is installing ChromeDriver in addition to Chrome. Can intern pick up on that since it's in the PATH?

Dylan Staley

@dstaley

Ah okay nevermind, looks like the issue encompasses updating digdug to accept a path to an executable

Dylan Staley

@dstaley

When pinning a webdriver version, should tunnelOptions go at the root of the config?

Jason Cheatham

@jason0x43

Yes.

{
  "tunnelOptions": {
    "drivers": [ { "name": "chrome", "version": "81.xxx" } ]
  }
}

MarvDann

@MarvDann

Hi Jason, what is the recommended way to mock api requests in intern 3? I have tried using nock but was unable to import it as a module after using bower to install it as a package alongside dojo in /src folder

Scott Davis

@stdavis

So I have unit tests running in the browser. How do I get those to run in a headless browser on my CI server?

Jason Cheatham

@jason0x43

@MarvDann If you're using dojo for requests, you can mock the request handling during tests. If you're using something else, you could try Sinon, which provides facilities for mocking XHR requests.

Jason Cheatham

@jason0x43

@stdavis In a CI system, you'd run Intern from the command line, and use the Selenium tunnel (assuming the browser is on your CI system) to load and manage the browser. In your Intern config, you'd setup an environment for headless chrome (see https://theintern.io/docs.html#Intern/4/docs/docs%2Fhow_to.md/run-tests-with-headless-chrome). Note that your CI system would need Java (headless Java is fine) to run Selenium. If Java isn't an option, you can also interact with chromedriver directly, but it's a bit more work (better support for direct interaction with web drivers is in the works).

1 reply

Dylan Staley

@dstaley

Is Firefox on GitHub Actions really flaky? I feel like every third run fails with

Timeout: [POST http://localhost:4444/wd/hub/session / {"desiredCapabilities":{"name":"intern","idle-timeout":60,"browserName":"firefox","moz:firefoxOptions":{"args":["-headless"],"browser":"firefox"}}] connection refused

rhpijnacker

@rhpijnacker

Since upgrading from Intern 3 to Intern 4 we have a number of files that have (much) lower code coverage.
I've been able to chase this down to test cases that use a (dojo) context require with a map to reroute dependencies to mock files. After the test case is finished, we clean up the loaded module (using require.undef) to force-load it (without mocked dependencies) the next time it is needed.
It seems that reloading a module with Intern 4 resets the coverage built up so far, whereas with Intern 3 this wasn't the case.
Any thoughts on how to work around this? Do we even consider this a bug?

Jason Cheatham

@jason0x43

I'd call that a bug. At least, I would expect coverage to be cumulative over the course of a test session.

rhpijnacker

@rhpijnacker

Ok, filed an issue with repro

Jason Cheatham

@jason0x43

Awesome, thanks

sKudum

@sKudum

Hi Team, any one ran Jasmine typescripts on saucelab?

John Lindal

@jafl

Is there an easy way to get the parent of an Element?

Jason Cheatham

@jason0x43

There's not an API function for that, but you should be able to get it with an execute block:

const element = remote.findByCssSelector('.some-element');
const parentNode = await remote.execute(function (node) {
  return node.parentNode;
}, [element]);

John Lindal

@jafl

Thanks!

tillyboy

@tillyboy

Sry for the most noob question of the day but I am trying to set up a workflow (learning about Web Development) and it seems I can't intern to test against a browser. For Chrome it either says that the version is wrong, or that it cannot download 85.0 from the specified URL. Version 85.0 is however available from the official google API. With Firefox I get a suide error occured. Can anyone tell me how to set this up?

Jason Cheatham

@jason0x43

Hi! Hmmm...it looks like the default webdriver versions used by Intern had slipped a bit. If you're using the most recent Intern, I pushed an updated list of webdriver versions that Intern should see the next time you run it. If you want to specify a version, you can use the tunnelOptions property, like:

"tunnelOptions":: {
  "drivers": [ { name: "chrome", "version": "85.0.4183.87" } ]
}

tillyboy

@tillyboy

Ok, so now I get Chrome to start and do some random stuff, which seems good to me. However I get

Error: Unable to load /tests/box.spec.ts
at HTMLScriptElement.<anonymous> @ node_modules/intern/browser/remote.js:168:45068
No unit test coverage for chrome on linux

Jason Cheatham

@jason0x43

TypeScript isn't (yet) supported in browsers, so you'll need to build your tests first. For example, using webpack, create a bundle that includes all of your unit tests, and then use that bundle in the browser. You can provide separate suites lists for Node and Browsers to keep using the TS suites in Node:

// intern.json
{
  "node": {
    "suites": "tests/**/*.ts"
  },
  "browser": {
    "suites": "build/tests.js"
  }
}

Dylan Staley

@dstaley

Just wanted to drop a note about this again. I'm constantly seeing test failures where Intern is unable to connect to Firefox on GitHub Actions. Any idea if this is a Firefox, GHA, or Intern issue? https://github.com/Kinto/kinto.js/runs/1167315492

Timeout: [POST http://localhost:4444/wd/hub/session / [...snip...] connection refused

Jason Cheatham

@jason0x43

Does it fail every time, or just frequently? Also, what version of Intern are you using?

Dylan Staley

@dstaley

Frequently, but not every time. I'd say it's about 50% of the time. I'm using v4.8.7.

Dylan Staley

@dstaley

I also just realized that this is on Windows. I'm gonna update our CI to run the browser tests on Linux to see if that increases stability.

Jason Cheatham

@jason0x43

That'd be great. Also, have the failures been happening for a while, or did they start relatively recently?

Dylan Staley

@dstaley

Should @theintern/digdug have semver listed as a dependency since it's being used here? https://github.com/theintern/digdug/blob/master/src/SeleniumTunnel.ts#L18

Running into an issue where semver isn't being found https://github.com/dstaley/ssgen/pull/4/checks?check_run_id=1216741708

Dylan Staley

@dstaley

Ah nevermind, after removing node_modules and package-lock.json it seems to have corrected itself!

rhpijnacker

@rhpijnacker

Trying to set up a self-hosted Selenium grid to run unit tests on Chrome, Safari, Edge and IE11.
For Chrome I can pass in a "start-maximized" argument to the webdriver to make the browser go full screen.
Is there a way to do something similar on Safari and/or IE11?

rhpijnacker

@rhpijnacker

Or, instead of maximized, to a fixed size, e.g. 1280x1024

Jason Cheatham

@jason0x43

I don't think that IEDriverServer or safaridriver will let you start a browser maximized , but you could call setWindowSizeor maximizeWindow in a before or beforeEachcall.

rhpijnacker

@rhpijnacker

For that it would need to be a functional test, I'm running unit tests.
Thanks anyway.

Jason Cheatham

@jason0x43

Hmmm...you could, in a plugin, listen for suiteStart events. When the starting suite is a session suite, you'll have access to the suite's remote object, at which point you could send a maximize command.

rhpijnacker

@rhpijnacker

Thanks, I'll give that a try

rhpijnacker

@rhpijnacker

The following plugin:

intern.on('suiteStart', suite => suite.remote && suite.remote.session.maximizeWindow());

works like a charm on IE11.
But on Safari it throws an error:

UnknownCommand: [POST http://130.145.143.139:4444/wd/hub/session/81AE85DB-218D-4607-8411-717638D3659D/window/current/maximize] The command 'POST /session/81AE85DB-218D-4607-8411-717638D3659D/window/current/maximize' was not found.

rhpijnacker

@rhpijnacker

Oh ... and Chrome says:

InvalidArgument: [POST http://130.145.143.139:4444/wd/hub/session/64e3cad15d80cdc54205631f4fc393d8/window/current/maximize] invalid argument: missing command parameters

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