Gitlab CI/CD - saving test coverage % in a regex variable? - bash

Question

Recently I added test coverage to our CI/CD pipeline, so we have the % of coverage outputted after each job. Currently our .gitlab-ci.yml looks like this:
run tests:
stage: test
image: python:3
script:
- pip install pytest pytest-cov
- coverage run -m pytest
- coverage report
- coverage xml
coverage: '/TOTAL.*\s([.\d]+)%/'
artifacts:
reports:
coverage_report:
coverage_format: cobertura
path: coverage.xml
Coverage is a gitlab CI keyword and it pulls the total % coverage from coverage report using regex on the total coverage that is outputted to the terminal. I want to save the coverage to a variable so I can compare it to a threshold number and fail the pipeline if it goes below the threshold. I tried:
variables:
coverage_percent: '/TOTAL.*\s([.\d]+)%/'
after_script:
- echo $coverage_percent
But $coverage_percent just gets saved as exact string '/TOTAL.*\s([.\d]+)%/' - it doesn't perform a regex on the terminal like the coverage command does. How can I either a) save the result of coverage: '/TOTAL.*\s([.\d]+)%/' or b) perform regex with a variable in the pipeline?

Answer 1

you could try using the gitlab api to pull the value out and perform a comparison, then based on the result of that fail your pipeline.
https://www.reddit.com/r/gitlab/comments/agqhnt/using_gitlab_api_to_access_code_coverage/ has an example of how to do this.
Depending on how often the pipelines value (the bit after /pipelines/) in the URL changes this might work for you :)