From d3d1e599211c31e05d095b878de517dbb6fc998c Mon Sep 17 00:00:00 2001
From: Andrew Godwin <andrew@aeracode.org>
Date: Sat, 18 Aug 2012 14:16:52 +0100
Subject: [PATCH] Add a SQlite backend. One test passes!

---
 django/db/backends/sqlite3/base.py   |  5 +++++
 django/db/backends/sqlite3/schema.py |  6 ++++++
 tests/modeltests/schema/tests.py     | 12 ++++++------
 3 files changed, 17 insertions(+), 6 deletions(-)
 create mode 100644 django/db/backends/sqlite3/schema.py

diff --git a/django/db/backends/sqlite3/base.py b/django/db/backends/sqlite3/base.py
index 08800791898..7918d5d3ef8 100644
--- a/django/db/backends/sqlite3/base.py
+++ b/django/db/backends/sqlite3/base.py
@@ -18,6 +18,7 @@ from django.db.backends.signals import connection_created
 from django.db.backends.sqlite3.client import DatabaseClient
 from django.db.backends.sqlite3.creation import DatabaseCreation
 from django.db.backends.sqlite3.introspection import DatabaseIntrospection
+from django.db.backends.sqlite3.schema import DatabaseSchemaEditor
 from django.utils.dateparse import parse_date, parse_datetime, parse_time
 from django.utils.functional import cached_property
 from django.utils.safestring import SafeString
@@ -336,6 +337,10 @@ class DatabaseWrapper(BaseDatabaseWrapper):
         if self.settings_dict['NAME'] != ":memory:":
             BaseDatabaseWrapper.close(self)
 
+    def schema_editor(self):
+        "Returns a new instance of this backend's SchemaEditor"
+        return DatabaseSchemaEditor(self)
+
 FORMAT_QMARK_REGEX = re.compile(r'(?<!%)%s')
 
 class SQLiteCursorWrapper(Database.Cursor):
diff --git a/django/db/backends/sqlite3/schema.py b/django/db/backends/sqlite3/schema.py
new file mode 100644
index 00000000000..bfd943c6fb5
--- /dev/null
+++ b/django/db/backends/sqlite3/schema.py
@@ -0,0 +1,6 @@
+from django.db.backends.schema import BaseDatabaseSchemaEditor
+
+
+class DatabaseSchemaEditor(BaseDatabaseSchemaEditor):
+
+    sql_delete_table = "DROP TABLE %(table)s"
diff --git a/tests/modeltests/schema/tests.py b/tests/modeltests/schema/tests.py
index 18f1abad636..3d0b1064055 100644
--- a/tests/modeltests/schema/tests.py
+++ b/tests/modeltests/schema/tests.py
@@ -44,18 +44,18 @@ class SchemaTests(TestCase):
             # Remove any M2M tables first
             for field in model._meta.local_many_to_many:
                 try:
-                    cursor.execute("DROP TABLE %s CASCADE" % (
-                        connection.ops.quote_name(field.rel.through._meta.db_table),
-                    ))
+                    cursor.execute(connection.schema_editor().sql_delete_table % {
+                        "table": connection.ops.quote_name(field.rel.through._meta.db_table),
+                    })
                 except DatabaseError:
                     connection.rollback()
                 else:
                     connection.commit()
             # Then remove the main tables
             try:
-                cursor.execute("DROP TABLE %s CASCADE" % (
-                    connection.ops.quote_name(model._meta.db_table),
-                ))
+                cursor.execute(connection.schema_editor().sql_delete_table % {
+                    "table": connection.ops.quote_name(model._meta.db_table),
+                })
             except DatabaseError:
                 connection.rollback()
             else: