Simplify the :: test step using View.render_definition

Author: enobayram

tests/view/test_escaped_bindparam.py

@@ -8,6 +8,7 @@
 )
 from sqlalchemy_declarative_extensions.alembic.view import UpdateViewOp
 from sqlalchemy_declarative_extensions.dialects import postgresql
+from sqlalchemy_declarative_extensions.dialects.postgresql import View
 from sqlalchemy_declarative_extensions.sqlalchemy import declarative_base
 from sqlalchemy_declarative_extensions.view.compare import compare_views
 
@@ -47,20 +48,6 @@ def test_escape_bindparam_postgres(pg):
 
     # Make sure that bindparams escaping doesn't create unnecessary escapes
     # for the literal casts that appear after view definition round-tripping
-    pg.execute(text("CREATE VIEW simple_select AS SELECT 'a' as col1"))
-
-    @view(Base)
-    class SimpleSelect:
-        __tablename__ = "simple_select"
-        __view__ = r"SELECT 'b' as col1"
-
-    ops = compare_views(pg.connection(), Base.metadata.info["views"])
-    assert len(ops) == 1
-
-    create_op = ops[0]
-    assert isinstance(create_op, UpdateViewOp)
-
-    update_statements = "\n".join(create_op.to_sql(postgresql))
-
-    assert "::" in update_statements, "Literals in the view definition are expected to get explicit type casts"
-    assert "\\:\\:" not in update_statements, "Bind parameters escaping should leave type casts unescaped"
+    rendered = View("simple_select", "SELECT 'a' as col1").render_definition(pg.connection())
+    assert "::" in rendered, "Literals in the view definition are expected to get explicit type casts"
+    assert "\\:\\:" not in rendered, "Bind parameters escaping should leave type casts unescaped"