Plugin FormData with a .zip file continues after execution

[aaron-goff]

When using a function on plugin.ts that requires a .zip file added to the form data, the form data stream won't close after the form data is used, and the test will take a bit of time to finish.

We need to investigate how to fix this.

Note:

• Does not happen on unit tests
• Only happens when form data has the .zip file attached
  • Only happens with POST requests (because the GET requests don't have the .zip attached)

Potential solutions:

• Different method for attaching the .zip file?
• Different method for executing requests?
• A way to close the stream after form data submission?

[aaron-goff]

After some more investigation, it looks like the ReadableStream created when attaching the .zip file isn't being cleaned up. To compound this, Mocha 4 no longer automatically kills processes after the tests have run, so this is why I was seeing things continue. This can be fixed (in the test runner) by adding a process.exit() to an after() outside of the description(). More info on this issue from Mocha here.

But I still think that ideally, we figure out how to make the ReadableStream end