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Code Issues 32 Releases Wiki Activity

Fixed #17785 -- Preferred column names in get_relations introspection

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Thanks Thomas Güttler for the report and the initial patch, and
Tim Graham for the review.
This commit is contained in:
Claude Paroz
2015-01-10 20:27:30 +01:00
parent b75c707943
commit 4c413e231c
7 changed files with 48 additions and 44 deletions
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23
tests/introspection/tests.py
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@@ -117,19 +117,32 @@ class IntrospectionTests(TransactionTestCase):
with connection.cursor() as cursor:
relations = connection.introspection.get_relations(cursor, Article._meta.db_table)
# That's {field_index: (field_index_other_table, other_table)}
self.assertEqual(relations, {3: (0, Reporter._meta.db_table),
4: (0, Article._meta.db_table)})
# That's {field_name: (field_name_other_table, other_table)}
expected_relations = {
'reporter_id': ('id', Reporter._meta.db_table),
'response_to_id': ('id', Article._meta.db_table),
}
self.assertEqual(relations, expected_relations)
# Removing a field shouldn't disturb get_relations (#17785)
body = Article._meta.get_field('body')
with connection.schema_editor() as editor:
editor.remove_field(Article, body)
with connection.cursor() as cursor:
relations = connection.introspection.get_relations(cursor, Article._meta.db_table)
with connection.schema_editor() as editor:
editor.add_field(Article, body)
self.assertEqual(relations, expected_relations)
@skipUnless(connection.vendor == 'sqlite', "This is an sqlite-specific issue")
def test_get_relations_alt_format(self):
"""With SQLite, foreign keys can be added with different syntaxes."""
with connection.cursor() as cursor:
cursor.fetchone = mock.Mock(return_value=[
"CREATE TABLE track(id, art INTEGER, FOREIGN KEY(art) REFERENCES %s(id));" % Article._meta.db_table
"CREATE TABLE track(id, art_id INTEGER, FOREIGN KEY(art_id) REFERENCES %s(id));" % Article._meta.db_table
])
relations = connection.introspection.get_relations(cursor, 'mocked_table')
self.assertEqual(relations, {1: (0, Article._meta.db_table)})
self.assertEqual(relations, {'art_id': ('id', Article._meta.db_table)})
@skipUnlessDBFeature('can_introspect_foreign_keys')
def test_get_key_columns(self):