mirror of https://github.com/zulip/zulip.git
56 lines
2.2 KiB
Python
56 lines
2.2 KiB
Python
# These are tests for Zulip's database migrations. System documented at:
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# https://zulip.readthedocs.io/en/latest/subsystems/schema-migrations.html
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#
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# You can also read
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# https://www.caktusgroup.com/blog/2016/02/02/writing-unit-tests-django-migrations/
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# to get a tutorial on the framework that inspired this feature.
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from unittest.mock import patch
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from django.db.migrations.state import StateApps
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from typing_extensions import override
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from zerver.lib.test_classes import MigrationsTestCase
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# Important note: These tests are very expensive, and details of
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# Django's database transaction model mean it does not super work to
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# have a lot of migrations tested in this file at once; so we usually
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# delete the old migration tests when adding a new one, so this file
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# always has a single migration test in it as an example.
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#
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# The error you get with multiple similar tests doing migrations on
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# the same table is this (table name may vary):
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#
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# django.db.utils.OperationalError: cannot ALTER TABLE
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# "zerver_subscription" because it has pending trigger events
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class RenameUserHotspot(MigrationsTestCase):
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migrate_from = "0492_realm_push_notifications_enabled_and_more"
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migrate_to = "0493_rename_userhotspot_to_onboardingstep"
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@override
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def setUp(self) -> None:
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with patch("builtins.print") as _:
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super().setUp()
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@override
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def setUpBeforeMigration(self, apps: StateApps) -> None:
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self.assertRaises(LookupError, lambda: apps.get_model("zerver", "onboardingstep"))
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UserHotspot = apps.get_model("zerver", "userhotspot")
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expected_field_names = {"id", "hotspot", "timestamp", "user"}
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fields_name = {field.name for field in UserHotspot._meta.get_fields()}
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self.assertEqual(fields_name, expected_field_names)
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def test_renamed_model_and_field(self) -> None:
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self.assertRaises(LookupError, lambda: self.apps.get_model("zerver", "userhotspot"))
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OnboardingStep = self.apps.get_model("zerver", "onboardingstep")
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expected_field_names = {"id", "onboarding_step", "timestamp", "user"}
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fields_name = {field.name for field in OnboardingStep._meta.get_fields()}
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self.assertEqual(fields_name, expected_field_names)
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