unittests: make datatests capable of parsing module subsections properly

We will need to update the tests for each module that gets newly added,
apparently, but the basic structure for doing so is hopefully there.

unittests/datatests.py

@@ -119,12 +119,18 @@ def test_builtin_options_documented(self):
         found_entries = set()
         sections = re.finditer(r"^## (.+)$", md, re.MULTILINE)
         # Extract the content for this section
+        u_subcontents = []
         content = self._get_section_content("Universal options", sections, md)
         subsections = tee(re.finditer(r"^### (.+)$", content, re.MULTILINE))
-        subcontent1 = self._get_section_content("Directories", subsections[0], content)
-        subcontent2 = self._get_section_content("Core options", subsections[1], content)
-        subcontent3 = self._get_section_content("Module options", sections, md)
-        for subcontent in (subcontent1, subcontent2, subcontent3):
+        u_subcontents.append(self._get_section_content("Directories", subsections[0], content))
+        u_subcontents.append(self._get_section_content("Core options", subsections[1], content))
+
+        mod_subcontents = []
+        content = self._get_section_content("Module options", sections, md)
+        subsections = tee(re.finditer(r"^### (.+)$", content, re.MULTILINE))
+        for idx, mod in enumerate(['Python']):
+            mod_subcontents.append(self._get_section_content(f'{mod} module', subsections[idx], content))
+        for subcontent in u_subcontents + mod_subcontents:
             # Find the option names
             options = set()
             # Match either a table row or a table heading separator: | ------ |
@@ -151,9 +157,9 @@ def test_builtin_options_documented(self):
         # setting of builtin options behaves
         #
         # Find all tables inside this subsection
-        tables = re.finditer(r"^\| (\w+) .* \|\n\| *[-|\s]+ *\|$", subcontent2, re.MULTILINE)
+        tables = re.finditer(r"^\| (\w+) .* \|\n\| *[-|\s]+ *\|$", u_subcontents[1], re.MULTILINE)
         # Get the table we want using the header of the first column
-        table = self._get_section_content('buildtype', tables, subcontent2)
+        table = self._get_section_content('buildtype', tables, u_subcontents[1])
         # Get table row data
         rows = re.finditer(r"^\|(?: (\w+)\s+\| (\w+)\s+\| (\w+) .* | *-+ *)\|", table, re.MULTILINE)
         env = get_fake_env()