Complete governed reporting execution and publication

tests/test_module_permutations.py

@@ -70,6 +70,34 @@ assert provider.contract_version == '1.0'
     _run_probe(script)
 
 
+def test_reporting_starts_without_files_or_mail_and_keeps_targets_optional() -> None:
+    script = """
+import importlib.abc
+import sys
+
+class Blocker(importlib.abc.MetaPathFinder):
+    def find_spec(self, fullname, path=None, target=None):
+        if fullname == 'govoplan_files' or fullname.startswith('govoplan_files.'):
+            raise ModuleNotFoundError("Files is physically absent", name=fullname)
+        if fullname == 'govoplan_mail' or fullname.startswith('govoplan_mail.'):
+            raise ModuleNotFoundError("Mail is physically absent", name=fullname)
+        return None
+
+sys.meta_path.insert(0, Blocker())
+from govoplan_reporting.backend.contracts import (
+    CAPABILITY_REPORTING_PUBLICATION_FILES,
+    CAPABILITY_REPORTING_PUBLICATION_MAIL,
+)
+from govoplan_reporting.backend.manifest import get_manifest
+manifest = get_manifest()
+assert 'files' in manifest.optional_dependencies
+assert 'mail' in manifest.optional_dependencies
+assert CAPABILITY_REPORTING_PUBLICATION_FILES in manifest.capability_factories
+assert CAPABILITY_REPORTING_PUBLICATION_MAIL in manifest.capability_factories
+"""
+    _run_probe(script)
+
+
 def _run_probe(source: str) -> None:
     environment = dict(os.environ)
     environment["PYTHONPATH"] = os.pathsep.join(