establish mypy / typing approach for v2.0

large patch to get ORM / typing efforts started.
this is to support adding new test cases to mypy,
support dropping sqlalchemy2-stubs entirely from the
test suite, validate major ORM typing reorganization
to eliminate the need for the mypy plugin.

* New declarative approach which uses annotation
  introspection, fixes: #7535
* Mapped[] is now at the base of all ORM constructs
  that find themselves in classes, to support direct
  typing without plugins
* Mypy plugin updated for new typing structures
* Mypy test suite broken out into "plugin" tests vs.
  "plain" tests, and enhanced to better support test
  structures where we assert that various objects are
  introspected by the type checker as we expect.
  as we go forward with typing, we will
  add new use cases to "plain" where we can assert that
  types are introspected as we expect.
* For typing support, users will be much more exposed to the
  class names of things.  Add these all to "sqlalchemy" import
  space.
* Column(ForeignKey()) no longer needs to be `@declared_attr`
  if the FK refers to a remote table
* composite() attributes mapped to a dataclass no longer
  need to implement a `__composite_values__()` method
* with_variant() accepts multiple dialect names

Change-Id: I22797c0be73a8fbbd2d6f5e0c0b7258b17fe145d
Fixes: #7535
Fixes: #7551
References: #6810

1 files changed, 11 insertions, 11 deletions

diff --git a/test/ext/declarative/test_inheritance.py b/test/ext/declarative/test_inheritance.py
index 64c32c76b..a695aadba 100644
--- a/test/ext/declarative/test_inheritance.py
+++ b/test/ext/declarative/test_inheritance.py
@@ -547,9 +547,9 @@ class ConcreteInhTest(
         configure_mappers()
         self.assert_compile(
             select(Employee),
-            "SELECT pjoin.name, pjoin.employee_id, pjoin.type, pjoin._type "
-            "FROM (SELECT manager.name AS name, manager.employee_id AS "
-            "employee_id, manager.type AS type, 'manager' AS _type "
+            "SELECT pjoin.employee_id, pjoin.type, pjoin.name, pjoin._type "
+            "FROM (SELECT manager.employee_id AS employee_id, "
+            "manager.type AS type, manager.name AS name, 'manager' AS _type "
             "FROM manager) AS pjoin",
         )
 
@@ -859,13 +859,13 @@ class ConcreteExtensionConfigTest(
         session = Session()
         self.assert_compile(
             session.query(Document),
-            "SELECT pjoin.doctype AS pjoin_doctype, "
-            "pjoin.send_method AS pjoin_send_method, "
-            "pjoin.id AS pjoin_id, pjoin.type AS pjoin_type "
-            "FROM (SELECT actual_documents.doctype AS doctype, "
+            "SELECT pjoin.id AS pjoin_id, pjoin.send_method AS "
+            "pjoin_send_method, pjoin.doctype AS pjoin_doctype, "
+            "pjoin.type AS pjoin_type FROM "
+            "(SELECT actual_documents.id AS id, "
             "actual_documents.send_method AS send_method, "
-            "actual_documents.id AS id, 'actual' AS type "
-            "FROM actual_documents) AS pjoin",
+            "actual_documents.doctype AS doctype, "
+            "'actual' AS type FROM actual_documents) AS pjoin",
         )
 
     def test_column_attr_names(self):
@@ -886,14 +886,14 @@ class ConcreteExtensionConfigTest(
             session.query(Document),
             "SELECT pjoin.documenttype AS pjoin_documenttype, "
             "pjoin.id AS pjoin_id, pjoin.type AS pjoin_type FROM "
-            "(SELECT offers.documenttype AS documenttype, offers.id AS id, "
+            "(SELECT offers.id AS id, offers.documenttype AS documenttype, "
             "'offer' AS type FROM offers) AS pjoin",
         )
 
         self.assert_compile(
             session.query(Document.documentType),
             "SELECT pjoin.documenttype AS pjoin_documenttype FROM "
-            "(SELECT offers.documenttype AS documenttype, offers.id AS id, "
+            "(SELECT offers.id AS id, offers.documenttype AS documenttype, "
             "'offer' AS type FROM offers) AS pjoin",
         )