Fixed #12308 -- Added tablespace support to the PostgreSQL backend.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@16987 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/modeltests/tablespaces/models.py

@@ -0,0 +1,32 @@
+from django.db import models
+
+# Since the test database doesn't have tablespaces, it's impossible for Django
+# to create the tables for models where db_tablespace is set. To avoid this
+# problem, we mark the models as unmanaged, and temporarily revert them to
+# managed during each tes. See setUp and tearDown -- it isn't possible to use
+# setUpClass and tearDownClass because they're called before Django flushes the
+# tables, so Django attempts to flush a non-existing table.
+
+class ScientistRef(models.Model):
+    name = models.CharField(max_length=50)
+
+class ArticleRef(models.Model):
+    title = models.CharField(max_length=50, unique=True)
+    code = models.CharField(max_length=50, unique=True)
+    authors = models.ManyToManyField(ScientistRef, related_name='articles_written_set')
+    reviewers = models.ManyToManyField(ScientistRef, related_name='articles_reviewed_set')
+
+class Scientist(models.Model):
+    name = models.CharField(max_length=50)
+    class Meta:
+        db_tablespace = 'tbl_tbsp'
+        managed = False
+
+class Article(models.Model):
+    title = models.CharField(max_length=50, unique=True)
+    code = models.CharField(max_length=50, unique=True, db_tablespace='idx_tbsp')
+    authors = models.ManyToManyField(Scientist, related_name='articles_written_set')
+    reviewers = models.ManyToManyField(Scientist, related_name='articles_reviewed_set', db_tablespace='idx_tbsp')
+    class Meta:
+        db_tablespace = 'tbl_tbsp'
+        managed = False

tests/modeltests/tablespaces/tests.py

@@ -0,0 +1,92 @@
+import copy
+
+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, Scientist, ScientistRef
+
+# Automatically created models
+Authors = Article._meta.get_field('authors').rel.through
+Reviewers = Article._meta.get_field('reviewers').rel.through
+
+# 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.
+
+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 other tests (proxy_models_inheritance).
+        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):
+        # 1 for the table + 1 for the index on the primary key
+        self.assertNumContains(sql_for_table(Scientist).lower(), '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).replace('ref', ''))
+
+    @skipUnlessDBFeature('supports_tablespaces')
+    def test_tablespace_for_indexed_field(self):
+        # 1 for the table + 1 for the primary key + 1 for the index on name
+        self.assertNumContains(sql_for_table(Article).lower(), 'tbl_tbsp', 3)
+        # 1 for the index on reference
+        self.assertNumContains(sql_for_table(Article).lower(), '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).replace('ref', ''))
+
+    @skipUnlessDBFeature('supports_tablespaces')
+    def test_tablespace_for_many_to_many_field(self):
+        # The join table of the ManyToManyField always goes to the tablespace
+        # of the model.
+        self.assertNumContains(sql_for_table(Authors).lower(), 'tbl_tbsp', 2)
+        self.assertNumContains(sql_for_table(Authors).lower(), 'idx_tbsp', 0)
+        # The ManyToManyField declares no db_tablespace, indexes for the two
+        # foreign keys in the join table go to the tablespace of the model.
+        self.assertNumContains(sql_for_index(Authors).lower(), 'tbl_tbsp', 2)
+        self.assertNumContains(sql_for_index(Authors).lower(), 'idx_tbsp', 0)
+
+        # The join table of the ManyToManyField always goes to the tablespace
+        # of the model.
+        self.assertNumContains(sql_for_table(Reviewers).lower(), 'tbl_tbsp', 2)
+        self.assertNumContains(sql_for_table(Reviewers).lower(), 'idx_tbsp', 0)
+        # The ManyToManyField declares db_tablespace, indexes for the two
+        # foreign keys in the join table go to this tablespace.
+        self.assertNumContains(sql_for_index(Reviewers).lower(), 'tbl_tbsp', 0)
+        self.assertNumContains(sql_for_index(Reviewers).lower(), 'idx_tbsp', 2)