📝 Add source examples for Python 3.9 and 3.10 (#715)

* 📝 Add source examples for Python 3.9 and 3.10

* ✅ Add tests for new source examples for Python 3.9 and 3.10, still needs pytest markers

* ✅ Add tests for fastapi examples

* ✅ Update tests for FastAPI app testing, for Python 3.9 and 3.10, fixing multi-app testing conflicts

* ✅ Require Python 3.9 and 3.10 for tests

* ✅ Update tests with missing markers

tests/test_tutorial/test_indexes/test_tutorial001_py310.py

@@ -0,0 +1,46 @@
+from unittest.mock import patch
+
+from sqlalchemy import inspect
+from sqlalchemy.engine.reflection import Inspector
+from sqlmodel import create_engine
+
+from ...conftest import get_testing_print_function, needs_py310
+
+
+@needs_py310
+def test_tutorial(clear_sqlmodel):
+    from docs_src.tutorial.indexes import tutorial001_py310 as mod
+
+    mod.sqlite_url = "sqlite://"
+    mod.engine = create_engine(mod.sqlite_url)
+    calls = []
+
+    new_print = get_testing_print_function(calls)
+
+    with patch("builtins.print", new=new_print):
+        mod.main()
+    assert calls == [
+        [{"secret_name": "Dive Wilson", "age": None, "id": 1, "name": "Deadpond"}]
+    ]
+
+    insp: Inspector = inspect(mod.engine)
+    indexes = insp.get_indexes(str(mod.Hero.__tablename__))
+    expected_indexes = [
+        {
+            "name": "ix_hero_name",
+            "dialect_options": {},
+            "column_names": ["name"],
+            "unique": 0,
+        },
+        {
+            "name": "ix_hero_age",
+            "dialect_options": {},
+            "column_names": ["age"],
+            "unique": 0,
+        },
+    ]
+    for index in expected_indexes:
+        assert index in indexes, "This expected index should be in the indexes in DB"
+        # Now that this index was checked, remove it from the list of indexes
+        indexes.pop(indexes.index(index))
+    assert len(indexes) == 0, "The database should only have the expected indexes"

tests/test_tutorial/test_indexes/test_tutorial002_py310.py

@@ -0,0 +1,47 @@
+from unittest.mock import patch
+
+from sqlalchemy import inspect
+from sqlalchemy.engine.reflection import Inspector
+from sqlmodel import create_engine
+
+from ...conftest import get_testing_print_function, needs_py310
+
+
+@needs_py310
+def test_tutorial(clear_sqlmodel):
+    from docs_src.tutorial.indexes import tutorial002_py310 as mod
+
+    mod.sqlite_url = "sqlite://"
+    mod.engine = create_engine(mod.sqlite_url)
+    calls = []
+
+    new_print = get_testing_print_function(calls)
+
+    with patch("builtins.print", new=new_print):
+        mod.main()
+    assert calls == [
+        [{"name": "Tarantula", "secret_name": "Natalia Roman-on", "age": 32, "id": 4}],
+        [{"name": "Black Lion", "secret_name": "Trevor Challa", "age": 35, "id": 5}],
+    ]
+
+    insp: Inspector = inspect(mod.engine)
+    indexes = insp.get_indexes(str(mod.Hero.__tablename__))
+    expected_indexes = [
+        {
+            "name": "ix_hero_name",
+            "dialect_options": {},
+            "column_names": ["name"],
+            "unique": 0,
+        },
+        {
+            "name": "ix_hero_age",
+            "dialect_options": {},
+            "column_names": ["age"],
+            "unique": 0,
+        },
+    ]
+    for index in expected_indexes:
+        assert index in indexes, "This expected index should be in the indexes in DB"
+        # Now that this index was checked, remove it from the list of indexes
+        indexes.pop(indexes.index(index))
+    assert len(indexes) == 0, "The database should only have the expected indexes"