add migrate and cli

tests/backends/mysql/__init__.py

@@ -2,17 +2,17 @@ from asynctest import TestCase
 from tortoise import Tortoise
 
 from alice.backends.mysql import MysqlDDL
-from tests.models import Category
+from alice.migrate import Migrate
 
 TORTOISE_ORM = {
     'connections': {
-        'default': 'mysql://root:123456@127.0.0.1:3306/test'
+        'default': 'mysql://root:123456@127.0.0.1:3306/test',
     },
     'apps': {
         'models': {
             'models': ['tests.models'],
             'default_connection': 'default',
-        }
+        },
     }
 }
 
@@ -22,6 +22,7 @@ class DBTestCase(TestCase):
         await Tortoise.init(config=TORTOISE_ORM)
         self.client = Tortoise.get_connection('default')
         self.ddl = MysqlDDL(self.client)
+        self.migrate = Migrate(ddl=self.ddl)
 
     async def tearDown(self) -> None:
         await Tortoise.close_connections()

tests/backends/mysql/test_ddl.py

@@ -1,5 +1,5 @@
 from tests.backends.mysql import DBTestCase
-from tests.models import Category, User
+from tests.models import Category
 
 
 class TestDDL(DBTestCase):
@@ -47,7 +47,3 @@ class TestDDL(DBTestCase):
     def test_drop_fk(self):
         ret = self.ddl.drop_fk(Category, Category._meta.fields_map.get('user'))
         self.assertEqual(ret, "ALTER TABLE category DROP FOREIGN KEY fk_category_user_366ffa6f")
-
-    async def test_aa(self):
-        user = await User.get(username='test')
-        await user.save()

tests/backends/mysql/test_migrate.py

@@ -0,0 +1,7 @@
+from tests.backends.mysql import DBTestCase
+
+
+class TestMigrate(DBTestCase):
+    async def test_migrate(self):
+        self.migrate.diff_models_module('tests.models', 'tests.new_models')
+        print(self.migrate.operators)