[cli] New, command line option to create or set a db URI (#7918)

* [cli] New, command line option to create or set a db URI

* [tests] New, get or create db on utils

* [tests] flake8 and black

* [tests] Fix, remove dummy comments

* [cli] dummy commit to re-trigger build

* [cli] dummy commit to re-trigger build

tests/utils_tests.py

@@ -23,13 +23,16 @@ import uuid
 from flask import Flask
 from flask_caching import Cache
 import numpy
+from sqlalchemy.exc import ArgumentError
 
-from superset import app
+from superset import app, db, security_manager
 from superset.exceptions import SupersetException
+from superset.models.core import Database
 from superset.utils.core import (
     base_json_conv,
     convert_legacy_filters_into_adhoc,
     datetime_f,
+    get_or_create_db,
     get_since_until,
     get_stacktrace,
     json_int_dttm_ser,
@@ -813,3 +816,22 @@ class UtilsTestCase(unittest.TestCase):
             except Exception:
                 stacktrace = get_stacktrace()
                 assert stacktrace is None
+
+    def test_get_or_create_db(self):
+        get_or_create_db("test_db", "sqlite:///superset.db")
+        database = db.session.query(Database).filter_by(database_name="test_db").one()
+        self.assertIsNotNone(database)
+        self.assertEqual(database.sqlalchemy_uri, "sqlite:///superset.db")
+        self.assertIsNotNone(
+            security_manager.find_permission_view_menu(
+                "datasource_access", database.perm
+            )
+        )
+        # Test change URI
+        get_or_create_db("test_db", "sqlite:///changed.db")
+        database = db.session.query(Database).filter_by(database_name="test_db").one()
+        self.assertEqual(database.sqlalchemy_uri, "sqlite:///changed.db")
+
+    def test_get_or_create_db_invalid_uri(self):
+        with self.assertRaises(ArgumentError):
+            get_or_create_db("test_db", "yoursql:superset.db/()")