Add Testing Workflow

[ssolson]

This PR adds basic testing to the python functions in the the seat qgis plugin using GitHub actions.

The test actions are controlled by the file: https://github.com/ssolson/seat-qgis-plugin/blob/tests/.github/workflows/run-tests.yml

The important steps in the testing are as follows:

• Initialize containers
  • This creates a docker container to run the tests in
• Checkout qgis-plugin
  • This installs qgis on the container
• Run QGIS Docker container
  • This runs the defined Docker container
• Sleep for Xvfb
  • This ensures everything in the docker container has started before proceeding
• Setup QGIS and enable the plugin
  • Installs the plugin into QGIS
• Install python dependencies
  • ensures the qgis python dependencies are installed
• Run Tests
  • runs the tests

TODO:

• [x] Create GitHub actions docker environment
• [x] Install QGIS on docker environment
• [x] Install seat in the QGIS environment
• [x] Create tests for the seat functions
  • [x] shear_stress_module tests
  • [x] power_module test
  • [x] stressor_receptor_calc test
  • [x] stressor_utils test
  • [x] velocity_module test

For reference below are some of the resources I used to put this together for future reference:

QGIS Documentation on Docker Images for Testing Example yml file to run docker test in GitHub Actions Example QGIS python tests Example python test for the GUI

Tutorial on QGIS Plugin Testing

python package for testing qgis plugins

Supercedes #27