pytest-dev / pytest-dev/pytest-xdist

Make looponfail support `listen` to forward inotify over virtualbox

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Python
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Description

When using virtualbox (using vboxsf filesystem, or NFS, or ...) there's no way to forward filesystem events from the host to the guest. So filesystem events like inotify don't work, and hence xdist looponfail doesn't work.

A clever solution is to run listen on the host and forward the events to the guest over TCP. The caveat is that the application needs to know how to interpret the events. Guard does this for rails development:

http://jamie.ideasasylum.com/2014/02/efficiently-using-guard-vagrant-rails-development/

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reading the xdist looponfail implementation and the listen tool's event-forwarding behavior described in the issue. Determine how host-side filesystem events could travel over TCP and how looponfail would interpret them in a VirtualBox guest. Done means looponfail responds correctly to forwarded events, with coverage for the supported setup.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
distributed-systems, testing-qa
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
20/100

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