better workflow logic

Author: bhazelton

.github/workflows/warning_test.yaml

@@ -15,18 +15,20 @@ concurrency:
 jobs:
   warning_test:
     name: Warning Test
+    env:
+      PYTEST_OPTIONS: ${{ case(matrix.coverage == true, '--cov=pyuvdata --cov-config=.coveragerc --cov-report xml:coverage.xml', '') }}
     runs-on: ubuntu-latest
     strategy:
       fail-fast: false
       matrix:
         include:
           - python-version: 3.13
             pip-options: "dev"
-            pytest-options: "--cov=pyuvdata --cov-config=.coveragerc --cov-report xml:coverage.xml"
+            coverage: true
           # currently (April 2026), python-casacore does not build properly from pypi on python 3.14
           - python-version: 3.14
             pip-options: "test"
-            pytest-options: ""
+            coverage: false
     steps:
       - uses: actions/checkout@main
         with:
@@ -48,7 +50,7 @@ jobs:
 
       - name: Run Tests
         run: |
-          pytest -W error -n auto ${{ matrix.pytest-options }}
+          pytest -W error -n auto ${{ env.PYTEST_OPTIONS }}
 
       - uses: codecov/codecov-action@v5
         if: success()