Add checks for models structure for migration

legacy/legacy_migration.py → legacy/scripts/migrate.py

@@ -1,10 +1,9 @@
-from django.db import connection
-from django.db import models
-
+from django.apps import apps
+from django.db import connection, models
 
 import legacy
-from parlamentares.models import (
-    Legislatura, SessaoLegislativa, NivelInstrucao)
+from mesa.models import Legislatura, SessaoLegislativa
+from parlamentares.models import NivelInstrucao
 
 
 mappings = (
@@ -28,6 +27,31 @@ mappings = (
 )
 
 
+appconfs = [apps.get_app_config(n) for n in [
+    'mesa',
+    'parlamentares',
+    'comissoes',
+    'sessao',
+    'materia',
+    'norma',
+    'lexml',
+    'protocoloadm', ]]
+name_sets = [set(m.__name__ for m in ac.get_models()) for ac in appconfs]
+
+# apps do not overlap
+for s1 in name_sets:
+    for s2 in name_sets:
+        if s1 is not s2:
+            assert not s1.intersection(s2)
+
+# apps include all legacy models
+legacy_model_names = set(m.__name__ for m in apps.get_app_config('legacy').get_models())
+all_names = set()
+for s1 in name_sets:
+    all_names = all_names.union(s1)
+assert all_names == legacy_model_names
+
+
 def migrate():
 
     for model, pk, field_pairs in mappings:
@@ -58,4 +82,3 @@ def migrate():
                 if new.id < old_id:
                     new.delete()
                     new = model()
-