How can I access the file name a test runs in from inside the afterTest hook in a wdio config file?

Question

I am trying to access the file name each test runs in from the afterTest hook in my wdio config file. However, none of the parameters provided to the hook includes the file name. I tried maybe getting the file name from the onWorkerStart hook, since the specs parameter provided to that hook includes the file name, so something like this:

onWorkerStart(cid, caps, specs) {
  const fileName = specs[0];
}

But I'm not sure how to access the fileName variable I created in the onWorkerStart hook in my afterTest hook. I tried maybe using it as a global variable:

onWorkerStart(cid, caps, specs) {
  global.fileName = specs[0];
}
afterTest() {
  console.log(global.fileName);
}

But this just prints "undefined". And if I print it from the onWorkerStart hook too, it does in fact print the name of the file from there first, but then "undefined" from the afterTest hook.

Answer 1

I finally figured it out. I was unaware that global variables in the wdio config had to be made inside the before hook, and luckily, the before hook includes a parameter specs which contains the file name. So all that needs to be done to access the file name in all the other hooks is to define global.specFileName = specs[0] inside the before hook. And now specFileName can be used in the afterTest hook.