debut changement vers google drive

tests/conftest.py

@@ -80,6 +80,7 @@ def documents_in_a_throwaway_directory(tmp_path, monkeypatch):
     cannot leave a PDF in someone's working tree.
     """
     monkeypatch.setenv('DOCUMENTS_ROOT', str(tmp_path / 'documents'))
+    monkeypatch.setenv('DOCUMENT_STORAGE_BACKEND', 'local')
 
 
 @pytest.fixture

tests/test_database_url.py

@@ -1,17 +1,17 @@
 """Which PostgreSQL driver the application actually asks for — QUA-001.
 
 `postgresql://…` is not "whichever driver is installed". SQLAlchemy reads it
-as psycopg2 and imports that module when the engine is created.
-requirements.txt pins psycopg 3 and no psycopg2, so a clean install against
-the URL Render hands out — the same form docs/database-restore.md documents
-— fails before the first request:
+as psycopg2 unless the URL names a driver. requirements.txt declares psycopg
+3, so create_app() must explicitly select it.
 
-    ModuleNotFoundError: No module named 'psycopg2'
-
-create_app() now names the driver. These tests pin that down, and the last
-one proves the failure is real rather than theoretical.
+The test suite must not assume that psycopg2 is absent: a developer's virtual
+environment can contain optional packages in addition to the declared
+dependencies. These tests instead pin the application's selected driver and
+the dependency contract that production installs use.
 """
 
+from pathlib import Path
+
 import pytest
 from sqlalchemy import create_engine
 
@@ -80,16 +80,13 @@ class TestTheFactory:
         assert app.config['SQLALCHEMY_DATABASE_URI'].startswith('sqlite:///')
 
 
-class TestTheFailureIsReal:
-    """Not a hypothetical: this is what the deployed configuration did."""
+class TestDriverContract:
+    def test_production_dependencies_select_psycopg_3(self):
+        requirements = Path(__file__).resolve().parents[1] / 'requirements.txt'
+        declared = requirements.read_text(encoding='utf-8')
 
-    def test_psycopg2_is_not_installed(self):
-        with pytest.raises(ImportError):
-            import psycopg2  # noqa: F401
-
-    def test_a_driverless_url_cannot_build_an_engine(self):
-        with pytest.raises(ModuleNotFoundError):
-            create_engine('postgresql://u:p@host/db')
+        assert 'psycopg[binary]==' in declared
+        assert 'psycopg2' not in declared
 
     def test_the_normalised_url_can(self):
         engine = create_engine(normalise_database_url('postgresql://u:p@host/db'))

tests/test_storage.py

@@ -19,7 +19,13 @@ import os
 import pytest
 
 from app.extensions import db
-from app.storage import CONTRACTS_DIR, document_path, documents_root
+from app.storage import (
+    CONTRACTS_DIR,
+    GOOGLE_DRIVE_PATH_PREFIX,
+    document_path,
+    documents_root,
+    store_uploaded_document,
+)
 
 
 class TestDocumentsRoot:
@@ -87,6 +93,22 @@ class TestDocumentPath:
         assert first_old == second_old, 'and must not move the ones already filed'
 
 
+class TestGoogleDriveStorage:
+    def test_new_uploads_store_an_opaque_drive_reference(self, monkeypatch):
+        from werkzeug.datastructures import FileStorage
+
+        monkeypatch.setenv('DOCUMENT_STORAGE_BACKEND', 'google_drive')
+        monkeypatch.setattr(
+            'app.storage.upload_google_drive_file',
+            lambda **_kwargs: 'drive-file-123',
+        )
+        upload = FileStorage(stream=_pdf(), filename='contract.pdf', content_type='application/pdf')
+
+        stored_path = store_uploaded_document(upload, os.path.join(CONTRACTS_DIR, 'new.pdf'))
+
+        assert stored_path == f'{GOOGLE_DRIVE_PATH_PREFIX}drive-file-123'
+
+
 class TestThroughTheUploadRoute:
     @pytest.fixture
     def uploaded(self, app, client, as_role, make_user):