refactor(db)!: finalize pooled WNDB v2 migration

tests/unit/test_project_routing.py

@@ -5,7 +5,9 @@ from app.infra.db.project_routing import (
     ActiveProjectRouting,
     activate_project_routing,
     get_active_project_routing,
+    get_project_database_name,
     get_project_pgconn_string,
+    get_project_template_database_name,
     get_project_timescale_pgconn_string,
 )
 
@@ -35,9 +37,16 @@ def test_project_database_uses_exact_routing_dsn_for_project_code() -> None:
         )
 
 
-def test_business_template_keeps_server_and_timescale_ignores_legacy_db_name() -> None:
+def test_business_template_keeps_server_and_timescale_ignores_legacy_db_name(
+    monkeypatch,
+) -> None:
+    monkeypatch.setattr(
+        "app.infra.db.project_routing.settings.WNDB_TEMPLATE_DB_NAME",
+        "tjwater_v2_template",
+    )
     with activate_project_routing(_routing()):
-        business = conninfo_to_dict(get_project_pgconn_string("project_a_template"))
+        template_name = get_project_template_database_name("project_a")
+        business = conninfo_to_dict(get_project_pgconn_string(template_name))
         timescale = conninfo_to_dict(
             get_project_timescale_pgconn_string("temporary_scheme")
         )
@@ -45,7 +54,7 @@ def test_business_template_keeps_server_and_timescale_ignores_legacy_db_name() -
     assert business == {
         "user": "biz_user",
         "password": "biz_password",
-        "dbname": "project_a_template",
+        "dbname": "tjwater_v2_template",
         "host": "biz.example",
         "port": "5432",
         "sslmode": "require",
@@ -60,6 +69,28 @@ def test_business_template_keeps_server_and_timescale_ignores_legacy_db_name() -
     }
 
 
+def test_project_code_resolves_to_physical_business_database(monkeypatch) -> None:
+    monkeypatch.setattr(
+        "app.infra.db.project_routing.settings.WNDB_TEMPLATE_DB_NAME",
+        "tjwater_v2_template",
+    )
+    with activate_project_routing(_routing()):
+        assert get_project_database_name("project_a") == "biz_database"
+        assert get_project_database_name("temporary_run") == "temporary_run"
+        assert get_project_template_database_name("project_a") == "tjwater_v2_template"
+
+
+def test_template_falls_back_to_config_outside_project_routing(monkeypatch) -> None:
+    monkeypatch.setattr(
+        "app.infra.db.project_routing.settings.WNDB_TEMPLATE_DB_NAME",
+        "tjwater_v2_template",
+    )
+
+    assert get_project_template_database_name("ignored-project-code") == (
+        "tjwater_v2_template"
+    )
+
+
 def test_project_routing_is_nested_and_request_local() -> None:
     first = _routing("project_a")
     second = _routing("project_b")