Preserve isolated local drafts across navigation and reload

tests/test_decision_workflow.py

@@ -240,6 +240,28 @@ class WorkflowHTTPTests(unittest.TestCase):
     setUp=fixtures.DecisionHTTPTests.setUp
     tearDown=fixtures.DecisionHTTPTests.tearDown
     request=fixtures.DecisionHTTPTests.request
+    def test_old_page_submission_without_revision_is_rejected_before_write(self):
+        self.request('/api/decisions','POST',definition())
+        old=answer();old.pop('expected_revision')
+        self.assertEqual(self.request('/api/decisions/choice/respond','POST',old)[0],400)
+        self.assertIsNone(self.server.store.decision_get('choice')['response'])
+        self.assertFalse(any(e['kind']=='submission' for e in self.server.store.decision_history('choice')['history']))
+        first=self.request('/api/decisions/choice/respond','POST',answer())
+        retry=self.request('/api/decisions/choice/respond','POST',answer())
+        self.assertEqual(first,retry)
+        self.assertEqual(first[0],200)
+        self.assertEqual(sum(e['kind']=='submission' for e in self.server.store.decision_history('choice')['history']),1)
+
+    def test_state_reports_current_page_asset_without_changing_decisions(self):
+        root=Path(self.tmp.name)/'frontend';root.mkdir()
+        self.server.web_root=root
+        (root/'index.html').write_text('<script type="module" crossorigin src="/assets/index-first.js"></script>')
+        self.assertEqual(self.request('/api/state')[1]['frontend_entrypoint'],'/assets/index-first.js')
+        (root/'index.html').write_text('<script type="module" src="/assets/index-next.js"></script>')
+        self.assertEqual(self.request('/api/state')[1]['frontend_entrypoint'],'/assets/index-next.js')
+        (root/'index.html').unlink()
+        self.assertIsNone(self.request('/api/state')[1]['frontend_entrypoint'])
+
     def test_limited_credential_route_matrix_and_closed_writes(self):
         store=self.server.store
         store.decision(definition());bind(store)