Add pytest summary into github CI.

.github/workflows/tests.yml

@@ -37,4 +37,27 @@ jobs:
                 name: Test with pytest
                 run:  |
                       cd tests
-                      pytest
+                      pytest --junit-xml=test-results.xml
+            -
+                name: Surface failing tests
+                if:   always()
+                uses: pmeier/pytest-results-action@main
+                with:
+                    # A list of JUnit XML files, directories containing the former, and wildcard
+                    # patterns to process.
+                    # See @actions/glob for supported patterns.
+                    path:            tests/test-results.xml
+
+                    # Add a summary of the results at the top of the report
+                    # Default: true
+                    summary:         true
+
+                    # Select which results should be included in the report.
+                    # Follows the same syntax as
+                    # `pytest -r`
+                    # Default: fEX
+                    display-options: fEX
+
+                    # Fail the workflow if no JUnit XML was found.
+                    # Default: true
+                    fail-on-empty:   true