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Refs #24163 -- Fixed failing Oracle test when migrating from ForeignKey to OneToOneField 

Thanks Tim Graham for review
This commit is contained in:
Markus Holtermann 2015-01-20 11:39:23 +01:00
parent be1357e709
commit 64ecb3f07d
1 changed files with 26 additions and 24 deletions
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50
tests/schema/tests.py
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@ -531,7 +531,7 @@ class SchemaTests(TransactionTestCase):
@unittest.skipUnless(connection.features.supports_foreign_keys, "No FK support")
def test_alter_o2o_to_fk(self):
"""
#24163 - Tests altering of OneToOne to FK
#24163 - Tests altering of OneToOneField to ForeignKey
"""
# Create the table
with connection.schema_editor() as editor:
@ -540,19 +540,21 @@ class SchemaTests(TransactionTestCase):
# Ensure the field is right to begin with
columns = self.column_classes(BookWithO2O)
self.assertEqual(columns['author_id'][0], "IntegerField")
# Make sure the FK and unique constraints are present
# Ensure the field is unique
author = Author.objects.create(name="Joe")
BookWithO2O.objects.create(author=author, title="Django 1", pub_date=datetime.datetime.now())
with self.assertRaises(IntegrityError):
BookWithO2O.objects.create(author=author, title="Django 2", pub_date=datetime.datetime.now())
BookWithO2O.objects.all().delete()
# Make sure the FK constraint is present
constraints = self.get_constraints(BookWithO2O._meta.db_table)
author_is_fk = False
author_is_unique = False
for name, details in constraints.items():
if details['columns'] == ['author_id']:
if details['foreign_key'] and details['foreign_key'] == ('schema_author', 'id'):
author_is_fk = True
if details['unique']:
author_is_unique = True
self.assertTrue(author_is_fk, "No FK constraint for author_id found")
self.assertTrue(author_is_unique, "No unique constraint for author_id found")
# Alter the O2O to FK
# Alter the OneToOneField to ForeignKey
new_field = ForeignKey(Author)
new_field.set_attributes_from_name("author")
with connection.schema_editor() as editor:
@ -565,23 +567,22 @@ class SchemaTests(TransactionTestCase):
# Ensure the field is right afterwards
columns = self.column_classes(Book)
self.assertEqual(columns['author_id'][0], "IntegerField")
# Make sure the FK constraint is present and unique constraint is absent
# Ensure the field is not unique anymore
Book.objects.create(author=author, title="Django 1", pub_date=datetime.datetime.now())
Book.objects.create(author=author, title="Django 2", pub_date=datetime.datetime.now())
# Make sure the FK constraint is still present
constraints = self.get_constraints(Book._meta.db_table)
author_is_fk = False
author_is_unique = True
for name, details in constraints.items():
if details['columns'] == ['author_id']:
if details['foreign_key'] and details['foreign_key'] == ('schema_author', 'id'):
author_is_fk = True
if not details['unique']:
author_is_unique = False
self.assertTrue(author_is_fk, "No FK constraint for author_id found")
self.assertFalse(author_is_unique, "Unique constraint for author_id found")
@unittest.skipUnless(connection.features.supports_foreign_keys, "No FK support")
def test_alter_fk_to_o2o(self):
"""
#24163 - Tests altering of FK to OneToOne
#24163 - Tests altering of ForeignKey to OneToOneField
"""
# Create the table
with connection.schema_editor() as editor:
@ -590,19 +591,20 @@ class SchemaTests(TransactionTestCase):
# Ensure the field is right to begin with
columns = self.column_classes(Book)
self.assertEqual(columns['author_id'][0], "IntegerField")
# Make sure the FK constraint is present and unique constraint is absent
# Ensure the field is not unique
author = Author.objects.create(name="Joe")
Book.objects.create(author=author, title="Django 1", pub_date=datetime.datetime.now())
Book.objects.create(author=author, title="Django 2", pub_date=datetime.datetime.now())
Book.objects.all().delete()
# Make sure the FK constraint is present
constraints = self.get_constraints(Book._meta.db_table)
author_is_fk = False
author_is_unique = True
for name, details in constraints.items():
if details['columns'] == ['author_id']:
if details['foreign_key'] and details['foreign_key'] == ('schema_author', 'id'):
author_is_fk = True
if not details['unique']:
author_is_unique = False
self.assertTrue(author_is_fk, "No FK constraint for author_id found")
self.assertFalse(author_is_unique, "Unique constraint for author_id found")
# Alter the O2O to FK
# Alter the ForeignKey to OneToOneField
new_field = OneToOneField(Author)
new_field.set_attributes_from_name("author")
with connection.schema_editor() as editor:
@ -615,18 +617,18 @@ class SchemaTests(TransactionTestCase):
# Ensure the field is right afterwards
columns = self.column_classes(BookWithO2O)
self.assertEqual(columns['author_id'][0], "IntegerField")
# Make sure the FK and unique constraints are present
# Ensure the field is unique now
BookWithO2O.objects.create(author=author, title="Django 1", pub_date=datetime.datetime.now())
with self.assertRaises(IntegrityError):
BookWithO2O.objects.create(author=author, title="Django 2", pub_date=datetime.datetime.now())
# Make sure the FK constraint is present
constraints = self.get_constraints(BookWithO2O._meta.db_table)
author_is_fk = False
author_is_unique = False
for name, details in constraints.items():
if details['columns'] == ['author_id']:
if details['foreign_key'] and details['foreign_key'] == ('schema_author', 'id'):
author_is_fk = True
if details['unique']:
author_is_unique = True
self.assertTrue(author_is_fk, "No FK constraint for author_id found")
self.assertTrue(author_is_unique, "No unique constraint for author_id found")
def test_alter_implicit_id_to_explicit(self):
"""