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import copy
from django.conf import settings
from django.db import connection
from django.db import models
from django.db.models.loading import cache
from django.core.management.color import no_style
from django.test import TestCase, skipIfDBFeature, skipUnlessDBFeature
from models import Article, ArticleRef, Authors, Reviewers, Scientist, ScientistRef
# We can't test the DEFAULT_TABLESPACE and DEFAULT_INDEX_TABLESPACE settings
# because they're evaluated when the model class is defined. As a consequence,
# @override_settings doesn't work, and the tests depend
def sql_for_table(model):
return '\n'.join(connection.creation.sql_create_model(model, no_style())[0])
def sql_for_index(model):
return '\n'.join(connection.creation.sql_indexes_for_model(model, no_style()))
class TablespacesTests(TestCase):
def setUp(self):
# The unmanaged models need to be removed after the test in order to
# prevent bad interactions with the flush operation in other tests.
self.old_app_models = copy.deepcopy(cache.app_models)
self.old_app_store = copy.deepcopy(cache.app_store)
for model in Article, Authors, Reviewers, Scientist:
model._meta.managed = True
def tearDown(self):
for model in Article, Authors, Reviewers, Scientist:
model._meta.managed = False
cache.app_models = self.old_app_models
cache.app_store = self.old_app_store
cache._get_models_cache = {}
def assertNumContains(self, haystack, needle, count):
real_count = haystack.count(needle)
self.assertEqual(real_count, count, "Found %d instances of '%s', "
"expected %d" % (real_count, needle, count))
@skipUnlessDBFeature('supports_tablespaces')
def test_tablespace_for_model(self):
sql = sql_for_table(Scientist).lower()
if settings.DEFAULT_INDEX_TABLESPACE:
# 1 for the table
self.assertNumContains(sql, 'tbl_tbsp', 1)
# 1 for the index on the primary key
self.assertNumContains(sql, settings.DEFAULT_INDEX_TABLESPACE, 1)
else:
# 1 for the table + 1 for the index on the primary key
self.assertNumContains(sql, 'tbl_tbsp', 2)
@skipIfDBFeature('supports_tablespaces')
def test_tablespace_ignored_for_model(self):
# No tablespace-related SQL
self.assertEqual(sql_for_table(Scientist),
sql_for_table(ScientistRef))
@skipUnlessDBFeature('supports_tablespaces')
def test_tablespace_for_indexed_field(self):
sql = sql_for_table(Article).lower()
if settings.DEFAULT_INDEX_TABLESPACE:
# 1 for the table
self.assertNumContains(sql, 'tbl_tbsp', 1)
# 1 for the primary key + 1 for the index on code
self.assertNumContains(sql, settings.DEFAULT_INDEX_TABLESPACE, 2)
else:
# 1 for the table + 1 for the primary key + 1 for the index on code
self.assertNumContains(sql, 'tbl_tbsp', 3)
# 1 for the index on reference
self.assertNumContains(sql, 'idx_tbsp', 1)
@skipIfDBFeature('supports_tablespaces')
def test_tablespace_ignored_for_indexed_field(self):
# No tablespace-related SQL
self.assertEqual(sql_for_table(Article),
sql_for_table(ArticleRef))
@skipUnlessDBFeature('supports_tablespaces')
def test_tablespace_for_many_to_many_field(self):
sql = sql_for_table(Authors).lower()
# The join table of the ManyToManyField goes to the model's tablespace,
# and its indexes too, unless DEFAULT_INDEX_TABLESPACE is set.
if settings.DEFAULT_INDEX_TABLESPACE:
# 1 for the table
self.assertNumContains(sql, 'tbl_tbsp', 1)
# 1 for the primary key
self.assertNumContains(sql, settings.DEFAULT_INDEX_TABLESPACE, 1)
else:
# 1 for the table + 1 for the index on the primary key
self.assertNumContains(sql, 'tbl_tbsp', 2)
self.assertNumContains(sql, 'idx_tbsp', 0)
sql = sql_for_index(Authors).lower()
# The ManyToManyField declares no db_tablespace, its indexes go to
# the model's tablespace, unless DEFAULT_INDEX_TABLESPACE is set.
if settings.DEFAULT_INDEX_TABLESPACE:
self.assertNumContains(sql, settings.DEFAULT_INDEX_TABLESPACE, 2)
else:
self.assertNumContains(sql, 'tbl_tbsp', 2)
self.assertNumContains(sql, 'idx_tbsp', 0)
sql = sql_for_table(Reviewers).lower()
# The join table of the ManyToManyField goes to the model's tablespace,
# and its indexes too, unless DEFAULT_INDEX_TABLESPACE is set.
if settings.DEFAULT_INDEX_TABLESPACE:
# 1 for the table
self.assertNumContains(sql, 'tbl_tbsp', 1)
# 1 for the primary key
self.assertNumContains(sql, settings.DEFAULT_INDEX_TABLESPACE, 1)
else:
# 1 for the table + 1 for the index on the primary key
self.assertNumContains(sql, 'tbl_tbsp', 2)
self.assertNumContains(sql, 'idx_tbsp', 0)
sql = sql_for_index(Reviewers).lower()
# The ManyToManyField declares db_tablespace, its indexes go there.
self.assertNumContains(sql, 'tbl_tbsp', 0)
self.assertNumContains(sql, 'idx_tbsp', 2)
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