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67 lines
2.4 KiB
Python
67 lines
2.4 KiB
Python
import os
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from django.db import connection
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from django.test import TransactionTestCase
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from django.utils._os import upath
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class MigrationTestBase(TransactionTestCase):
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"""
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Contains an extended set of asserts for testing migrations and schema operations.
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"""
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available_apps = ["migrations"]
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test_dir = os.path.abspath(os.path.dirname(upath(__file__)))
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def get_table_description(self, table):
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with connection.cursor() as cursor:
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return connection.introspection.get_table_description(cursor, table)
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def assertTableExists(self, table):
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with connection.cursor() as cursor:
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self.assertIn(table, connection.introspection.table_names(cursor))
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def assertTableNotExists(self, table):
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with connection.cursor() as cursor:
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self.assertNotIn(table, connection.introspection.table_names(cursor))
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def assertColumnExists(self, table, column):
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self.assertIn(column, [c.name for c in self.get_table_description(table)])
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def assertColumnNotExists(self, table, column):
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self.assertNotIn(column, [c.name for c in self.get_table_description(table)])
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def assertColumnNull(self, table, column):
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self.assertEqual([c.null_ok for c in self.get_table_description(table) if c.name == column][0], True)
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def assertColumnNotNull(self, table, column):
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self.assertEqual([c.null_ok for c in self.get_table_description(table) if c.name == column][0], False)
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def assertIndexExists(self, table, columns, value=True):
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with connection.cursor() as cursor:
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self.assertEqual(
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value,
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any(
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c["index"]
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for c in connection.introspection.get_constraints(cursor, table).values()
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if c['columns'] == list(columns)
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),
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)
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def assertIndexNotExists(self, table, columns):
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return self.assertIndexExists(table, columns, False)
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def assertFKExists(self, table, columns, to, value=True):
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with connection.cursor() as cursor:
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self.assertEqual(
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value,
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any(
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c["foreign_key"] == to
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for c in connection.introspection.get_constraints(cursor, table).values()
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if c['columns'] == list(columns)
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),
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)
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def assertFKNotExists(self, table, columns, to, value=True):
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return self.assertFKExists(table, columns, to, False)
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