make test fails in trestle development environment when there is a pre-exisiting trestle workspace in /tmp

[degenaro]

Describe the bug

During trestle development, if there is a pre-existing workspace in /tmp when make test is run several tests will fail. The quick fix is to remove the trestle workspace from /tmp.

In the longer term, the tests should not rely upon a pristine /tmp folder, e.g. one without an existing trestle workspace.

To Reproduce

Steps to reproduce the behavior:

1. create trestle development environment, comprising python venv and download of trestle develop branch.
2. use trestle init to create trestle workspace in the /tmp folder
3. run make test in the downloaded trestle devlop branch
4. See errors

Expected behavior

The errors should not occur, regardless of the presence of a trestle workspace in /tmp

Screenshots / Logs.

N/A

Environment

• OS: RHEL 8
• Python version: 3.10
• Installed packages: trestle develop branch