Add GHA step to check for warnings

.github/workflows/test_suite.yml

@@ -24,12 +24,24 @@ jobs:
     # - name: Fix Conda permissions on macOS
     #   run: sudo chown -R $UID $CONDA
     #   if: runner.os == 'macOS'
+
     - name: Install IC
       run: |
         source $CONDA/etc/profile.d/conda.sh
         source manage.sh work_in_python_version_no_tests ${{ matrix.python-version }}
+
+
     - name: Run tests
       run: |
+        set -o pipefail
         source $CONDA/etc/profile.d/conda.sh
         source manage.sh work_in_python_version_no_tests ${{ matrix.python-version }}
-        PYTEST_ADDOPTS=--color=yes HYPOTHESIS_PROFILE=travis-ci bash manage.sh run_tests_par
+        PYTEST_ADDOPTS=--color=yes HYPOTHESIS_PROFILE=travis-ci bash manage.sh run_tests_par | tee pytest_output.txt
+
+    - name: Warning summary
+      continue-on-error: true
+      run: |
+        ./scripts/check_warnings pytest_output.txt
+        if [ $? ]; then
+            echo "::warning ::There are warnings raised in the test suite"
+        fi

scripts/check_warnings

@@ -0,0 +1,19 @@
+#!/usr/bin/env python
+import sys
+import re
+
+header = "(.*)(=+) warnings summary (=+)(.*)"   # <color> === title === <color>
+footer = "(.*)(=+) (.+) warnings (.+) (=+)(.*)" # <color> === x passed y warnings in z seconds === <color>
+
+found = False
+doit  = False
+for line in map(str.strip, open(sys.argv[1])):
+    if re.match(header, line): doit=True
+
+    if doit:
+        found = True
+        print(line)
+
+    if re.match(footer, line): doit=False
+
+sys.exit(found)