Changed Oracle test-user creation to grant privileges instead of roles

because the roles (specifically RESOURCE) are deprecated.
Also added optional support for creating views in tests, and made an
introspection test fail (rather than skip)  if a view cannot be created
due to lacking privileges.

Refs #18782

Thanks Tim Graham for review, and Josh Smeaton

django/db/backends/oracle/creation.py

@@ -3,6 +3,7 @@
 
 from django.conf import settings
 from django.db.backends.creation import BaseDatabaseCreation
+from django.db.utils import DatabaseError
 from django.utils.six.moves import input
 
 
@@ -172,9 +173,25 @@ def _create_test_user(self, cursor, parameters, verbosity):
                TEMPORARY TABLESPACE %(tblspace_temp)s
                QUOTA UNLIMITED ON %(tblspace)s
             """,
-            """GRANT CONNECT, RESOURCE TO %(user)s""",
+            """GRANT CREATE SESSION,
+                     CREATE TABLE,
+                     CREATE SEQUENCE,
+                     CREATE PROCEDURE,
+                     CREATE TRIGGER
+               TO %(user)s""",
         ]
         self._execute_statements(cursor, statements, parameters, verbosity)
+        # Most test-suites can be run without the create-view privilege. But some need it.
+        extra = "GRANT CREATE VIEW TO %(user)s"
+        try:
+            self._execute_statements(cursor, [extra], parameters, verbosity, allow_quiet_fail=True)
+        except DatabaseError as err:
+            description = str(err)
+            if 'ORA-01031' in description:
+                if verbosity >= 2:
+                    print("Failed to grant CREATE VIEW permission to test user. This may be ok.")
+            else:
+                raise
 
     def _execute_test_db_destruction(self, cursor, parameters, verbosity):
         if verbosity >= 2:
@@ -194,15 +211,16 @@ def _destroy_test_user(self, cursor, parameters, verbosity):
         ]
         self._execute_statements(cursor, statements, parameters, verbosity)
 
-    def _execute_statements(self, cursor, statements, parameters, verbosity):
+    def _execute_statements(self, cursor, statements, parameters, verbosity, allow_quiet_fail=False):
         for template in statements:
             stmt = template % parameters
             if verbosity >= 2:
                 print(stmt)
             try:
                 cursor.execute(stmt)
             except Exception as err:
-                sys.stderr.write("Failed (%s)\n" % (err))
+                if (not allow_quiet_fail) or verbosity >= 2:
+                    sys.stderr.write("Failed (%s)\n" % (err))
                 raise
 
     def _get_test_db_params(self):

docs/ref/databases.txt

@@ -672,14 +672,37 @@ database user must have privileges to run the following commands:
 * CREATE PROCEDURE
 * CREATE TRIGGER
 
-To run Django's test suite, the user needs these *additional* privileges:
+To run a project's test suite, the user usually needs these *additional*
+privileges:
 
 * CREATE USER
 * DROP USER
 * CREATE TABLESPACE
 * DROP TABLESPACE
-* CONNECT WITH ADMIN OPTION
-* RESOURCE WITH ADMIN OPTION
+* CREATE SESSION WITH ADMIN OPTION
+* CREATE TABLE WITH ADMIN OPTION
+* CREATE SEQUENCE WITH ADMIN OPTION
+* CREATE PROCEDURE WITH ADMIN OPTION
+* CREATE TRIGGER WITH ADMIN OPTION
+
+Note that, while the RESOURCE role has the required CREATE TABLE, CREATE
+SEQUENCE, CREATE PROCEDURE and CREATE TRIGGER privileges, and a user
+granted RESOURCE WITH ADMIN OPTION can grant RESOURCE, such a user cannot
+grant the individual privileges (e.g. CREATE TABLE), and thus RESOURCE
+WITH ADMIN OPTION is not usually sufficient for running tests.
+
+Some test suites also create views; to run these, the user also needs
+the CREATE VIEW WITH ADMIN OPTION privilege. In particular, this is needed
+for Django's own test suite.
+
+.. versionchanged:: 1.8
+
+    Prior to Django 1.8, the test user was granted the CONNECT and RESOURCE
+    roles, so the extra privileges required for running the test suite were
+    different.
+
+All of these privileges are included in the DBA role, which is appropriate
+for use on a private developer's database.
 
 The Oracle database backend uses the ``SYS.DBMS_LOB`` package, so your user
 will require execute permissions on it. It's normally accessible to all users

docs/releases/1.8.txt

@@ -499,6 +499,16 @@ The end of upstream support periods was reached in July 2010 for Oracle 9.2,
 January 2012 for Oracle 10.1, and July 2013 for Oracle 10.2. As a consequence,
 Django 1.8 sets 11.1 as the minimum Oracle version it officially supports.
 
+Specific privileges used instead of roles for tests on Oracle
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Earlier versions of Django granted the CONNECT and RESOURCE roles to the test
+user on Oracle. These roles have been deprecated, so Django 1.8 uses the
+specific underlying privileges instead. This changes the privileges required
+of the main user for running tests (unless the project is configured to avoid
+creating a test user). The exact privileges required now are detailed in
+:ref:`Oracle notes <oracle-notes>`.
+
 ``AbstractUser.last_login`` allows null values
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 

tests/introspection/tests.py

@@ -43,7 +43,7 @@ def test_table_names_with_views(self):
                     'from introspection_article;')
             except DatabaseError as e:
                 if 'insufficient privileges' in str(e):
-                    self.skipTest("The test user has no CREATE VIEW privileges")
+                    self.fail("The test user has no CREATE VIEW privileges")
                 else:
                     raise