"No changes to code coverage between base and head branch" when fullCoverageDiff: false

[alexciesielski]

As a test I have written some additional unit tests in the PR implementing this coverage diff tool but however many unit tests I add I still get the same message.

I run this on an Angular application which I have jest configured for with jest-preset-angular. The coverage is definitely being generated, because when I set fullCoverageDiff to true I get a wall of text with the whole coverage (which unfortunately is just unreadable given the length).

      - name: Run unit tests and check coverage
        uses: anuraag016/Jest-Coverage-Diff@master
        with:
          fullCoverageDiff: false
          runCommand: npm run test:ci
          delta: 0.5

"test:ci": "ng test --ci --silent --bail --coverage --collect-coverage --coverage-directory='./' --coverage-reporters=json-summary",