Fixed #25421 -- Fixed test --keepdb option on Oracle.

django/db/backends/oracle/creation.py

@@ -35,7 +35,7 @@ class DatabaseCreation(BaseDatabaseCreation):
         cursor = self._maindb_connection.cursor()
         if self._test_database_create():
             try:
-                self._execute_test_db_creation(cursor, parameters, verbosity)
+                self._execute_test_db_creation(cursor, parameters, verbosity, keepdb)
             except Exception as e:
                 # if we want to keep the db, then no need to do any of the below,
                 # just return and skip it all.
@@ -63,7 +63,7 @@ class DatabaseCreation(BaseDatabaseCreation):
                         sys.stderr.write("Got an error destroying the old test database: %s\n" % e)
                         sys.exit(2)
                     try:
-                        self._execute_test_db_creation(cursor, parameters, verbosity)
+                        self._execute_test_db_creation(cursor, parameters, verbosity, keepdb)
                     except Exception as e:
                         sys.stderr.write("Got an error recreating the test database: %s\n" % e)
                         sys.exit(2)
@@ -75,8 +75,11 @@ class DatabaseCreation(BaseDatabaseCreation):
             if verbosity >= 1:
                 print("Creating test user...")
             try:
-                self._create_test_user(cursor, parameters, verbosity)
+                self._create_test_user(cursor, parameters, verbosity, keepdb)
             except Exception as e:
+                # If we want to keep the db, then we want to also keep the user.
+                if keepdb:
+                    return
                 sys.stderr.write("Got an error creating the test user: %s\n" % e)
                 if not autoclobber:
                     confirm = input(
@@ -89,7 +92,7 @@ class DatabaseCreation(BaseDatabaseCreation):
                         self._destroy_test_user(cursor, parameters, verbosity)
                         if verbosity >= 1:
                             print("Creating test user...")
-                        self._create_test_user(cursor, parameters, verbosity)
+                        self._create_test_user(cursor, parameters, verbosity, keepdb)
                     except Exception as e:
                         sys.stderr.write("Got an error recreating the test user: %s\n" % e)
                         sys.exit(2)
@@ -184,7 +187,7 @@ class DatabaseCreation(BaseDatabaseCreation):
             self._execute_test_db_destruction(cursor, parameters, verbosity)
         self._maindb_connection.close()
 
-    def _execute_test_db_creation(self, cursor, parameters, verbosity):
+    def _execute_test_db_creation(self, cursor, parameters, verbosity, keepdb=False):
         if verbosity >= 2:
             print("_create_test_db(): dbname = %s" % parameters['user'])
         statements = [
@@ -197,9 +200,11 @@ class DatabaseCreation(BaseDatabaseCreation):
                REUSE AUTOEXTEND ON NEXT 10M MAXSIZE %(maxsize_tmp)s
             """,
         ]
-        self._execute_statements(cursor, statements, parameters, verbosity)
+        # Ignore "tablespace already exists" error when keepdb is on.
+        acceptable_ora_err = 'ORA-01543' if keepdb else None
+        self._execute_allow_fail_statements(cursor, statements, parameters, verbosity, acceptable_ora_err)
 
-    def _create_test_user(self, cursor, parameters, verbosity):
+    def _create_test_user(self, cursor, parameters, verbosity, keepdb=False):
         if verbosity >= 2:
             print("_create_test_user(): username = %s" % parameters['user'])
         statements = [
@@ -216,18 +221,14 @@ class DatabaseCreation(BaseDatabaseCreation):
                      CREATE TRIGGER
                TO %(user)s""",
         ]
-        self._execute_statements(cursor, statements, parameters, verbosity)
+        # Ignore "user already exists" error when keepdb is on
+        acceptable_ora_err = 'ORA-01920' if keepdb else None
+        self._execute_allow_fail_statements(cursor, statements, parameters, verbosity, acceptable_ora_err)
         # 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
+        success = self._execute_allow_fail_statements(cursor, [extra], parameters, verbosity, 'ORA-01031')
+        if not success and verbosity >= 2:
+            print("Failed to grant CREATE VIEW permission to test user. This may be ok.")
 
     def _execute_test_db_destruction(self, cursor, parameters, verbosity):
         if verbosity >= 2:
@@ -259,6 +260,23 @@ class DatabaseCreation(BaseDatabaseCreation):
                     sys.stderr.write("Failed (%s)\n" % (err))
                 raise
 
+    def _execute_allow_fail_statements(self, cursor, statements, parameters, verbosity, acceptable_ora_err):
+        """
+        Execute statements which are allowed to fail silently if the Oracle
+        error code given by `acceptable_ora_err` is raised. Return True if the
+        statements execute without an exception, or False otherwise.
+        """
+        try:
+            # Statement can fail when acceptable_ora_err is not None
+            allow_quiet_fail = acceptable_ora_err is not None and len(acceptable_ora_err) > 0
+            self._execute_statements(cursor, statements, parameters, verbosity, allow_quiet_fail=allow_quiet_fail)
+            return True
+        except DatabaseError as err:
+            description = str(err)
+            if acceptable_ora_err is None or acceptable_ora_err not in description:
+                raise
+            return False
+
     def _get_test_db_params(self):
         return {
             'dbname': self._test_database_name(),

docs/releases/1.8.5.txt

@@ -50,3 +50,5 @@ Bugfixes
 * Allowed using ORM write methods after disabling autocommit with
   :func:`set_autocommit(False) <django.db.transaction.set_autocommit>`
   (:ticket:`24921`).
+
+* Fixed the ``manage.py test --keepdb`` option on Oracle (:ticket:`25421`).