Doctest traverse fix, add testgrid for docutils

.github/workflows/tests.yml

@@ -10,6 +10,7 @@ jobs:
     strategy:
       matrix:
         python-version: ["3.7", "3.10"]
+        docutils-version: [ '0.18', '0.19' ]
     steps:
       - uses: actions/checkout@v3
 
@@ -23,7 +24,9 @@ jobs:
           cache: 'poetry'
 
       - name: Install dependencies
-        run: poetry install -E "docs test coverage lint format"
+        run: |
+          poetry install -E "docs test coverage lint format"
+          poetry run pip install docutils~=${{ matrix.docutils-version }}
 
       - name: Print python versions
         run: |

src/doctest_docutils.py

@@ -16,6 +16,8 @@
 from packaging.specifiers import InvalidSpecifier, SpecifierSet
 from packaging.version import Version
 
+from docutils_compat import findall
+
 logger = logging.getLogger(__name__)
 
 
@@ -325,7 +327,7 @@ def condition(node: Node) -> bool:
                 or isinstance(node, nodes.doctest_block)
             )
 
-        for idx, node in enumerate(doc.traverse(condition)):
+        for idx, node in enumerate(findall(doc)(condition)):  # type:ignore
             logger.debug(f"() node: {node.astext()}")
             assert isinstance(node, nodes.Element)
             test_name = node.get("groups")