[cdd/shared/parse/utils/parser_utils.py] Correctly use merge_params…

… and fix its impl to return ; [cdd/sqlalchemy/utils/shared_utils.py] Prepare for increased test coverage ; [cdd/tests/{test_parse/test_parser_utils.py,test_sqlalchemy/test_emit_sqlalchemy_utils.py}] Increase test coverage ; [cdd/__init__.py] Bump version

cdd/__init__.py

@@ -9,7 +9,7 @@
 from logging import getLogger as get_logger
 
 __author__ = "Samuel Marks"  # type: str
-__version__ = "0.0.99rc43"  # type: str
+__version__ = "0.0.99rc44"  # type: str
 __description__ = (
     "Open API to/fro routes, models, and tests. "
     "Convert between docstrings, classes, methods, argparse, pydantic, and SQLalchemy."

cdd/shared/parse/utils/parser_utils.py

@@ -62,10 +62,7 @@ def ir_merge(target, other):
         target["params"] = other["params"]
     elif other["params"]:
         target_params, other_params = map(itemgetter("params"), (target, other))
-
-        merge_params(other_params, target_params)
-
-        target["params"] = target_params
+        target["params"] = merge_params(other_params, target_params)
 
     if "return_type" not in (target.get("returns") or iter(())):
         target["returns"] = other["returns"]
@@ -110,6 +107,7 @@ def merge_params(other_params, target_params):
         merge_present_params(other_params[name], target_params[name])
     for name in other_params.keys() - target_params.keys():
         target_params[name] = other_params[name]
+    return target_params
 
 
 def merge_present_params(other_param, target_param):

cdd/sqlalchemy/utils/shared_utils.py

@@ -3,7 +3,7 @@
 """
 
 import ast
-from ast import Call, Expr, Load, Name, Subscript, Tuple, keyword
+from ast import Call, Expr, Load, Name, Subscript, Tuple, expr, keyword
 from operator import attrgetter
 from typing import Optional, cast
 
@@ -82,13 +82,14 @@ def update_args_infer_typ_sqlalchemy(_param, args, name, nullable, x_typ_sql):
         return _param.get("default") == cdd.shared.ast_utils.NoneStr, None
     elif _param["typ"].startswith("Optional["):
         _param["typ"] = _param["typ"][len("Optional[") : -1]
-        nullable = True
+        nullable: bool = True
     if "Literal[" in _param["typ"]:
         parsed_typ: Call = cast(
             Call, cdd.shared.ast_utils.get_value(ast.parse(_param["typ"]).body[0])
         )
-        if parsed_typ.value.id != "Literal":
-            return nullable, parsed_typ.value
+        assert parsed_typ.value.id == "Literal", "Expected `Literal` got: {!r}".format(
+            parsed_typ.value.id
+        )
         val = cdd.shared.ast_utils.get_value(parsed_typ.slice)
         (
             args.append(
@@ -112,7 +113,7 @@ def update_args_infer_typ_sqlalchemy(_param, args, name, nullable, x_typ_sql):
             else _update_args_infer_typ_sqlalchemy_for_scalar(_param, args, x_typ_sql)
         )
     elif _param["typ"].startswith("List["):
-        after_generic = _param["typ"][len("List[") :]
+        after_generic: str = _param["typ"][len("List[") :]
         if "struct" in after_generic:  # "," in after_generic or
             name: Name = Name(id="JSON", ctx=Load(), lineno=None, col_offset=None)
         else:
@@ -175,42 +176,53 @@ def update_args_infer_typ_sqlalchemy(_param, args, name, nullable, x_typ_sql):
             )
         )
     elif _param.get("typ").startswith("Union["):
-        # Hack to remove the union type. Enum parse seems to be incorrect?
-        union_typ: Subscript = cast(Subscript, ast.parse(_param["typ"]).body[0])
-        assert isinstance(
-            union_typ.value, Subscript
-        ), "Expected `Subscript` got `{type_name}`".format(
-            type_name=type(union_typ.value).__name__
-        )
-        union_typ_tuple = (
-            union_typ.value.slice if PY_GTE_3_9 else union_typ.value.slice.value
-        )
-        assert isinstance(
-            union_typ_tuple, Tuple
-        ), "Expected `Tuple` got `{type_name}`".format(
-            type_name=type(union_typ_tuple).__name__
-        )
-        assert (
-            len(union_typ_tuple.elts) == 2
-        ), "Expected length of 2 got `{tuple_len}`".format(
-            tuple_len=len(union_typ_tuple.elts)
-        )
-        left, right = map(attrgetter("id"), union_typ_tuple.elts)
-        args.append(
-            Name(
-                (
-                    cdd.sqlalchemy.utils.emit_utils.typ2column_type[right]
-                    if right in cdd.sqlalchemy.utils.emit_utils.typ2column_type
-                    else cdd.sqlalchemy.utils.emit_utils.typ2column_type.get(left, left)
-                ),
-                Load(),
-                lineno=None,
-                col_offset=None,
-            )
-        )
+        args.append(_handle_union_of_length_2(_param["typ"]))
     else:
         _update_args_infer_typ_sqlalchemy_for_scalar(_param, args, x_typ_sql)
     return nullable, None
 
 
+def _handle_union_of_length_2(typ):
+    """
+    Internal function to turn `str` to `Name`
+
+    :param typ: `str` which evaluates to `ast.Subscript`
+    :type typ: ```str```
+
+    :return: Parsed out name
+    :rtype: ```Name```
+    """
+    # Hack to remove the union type. Enum parse seems to be incorrect?
+    union_typ: Subscript = cast(Subscript, ast.parse(typ).body[0])
+    assert isinstance(
+        union_typ.value, Subscript
+    ), "Expected `Subscript` got `{type_name}`".format(
+        type_name=type(union_typ.value).__name__
+    )
+    union_typ_tuple: expr = (
+        union_typ.value.slice if PY_GTE_3_9 else union_typ.value.slice.value
+    )
+    assert isinstance(
+        union_typ_tuple, Tuple
+    ), "Expected `Tuple` got `{type_name}`".format(
+        type_name=type(union_typ_tuple).__name__
+    )
+    assert (
+        len(union_typ_tuple.elts) == 2
+    ), "Expected length of 2 got `{tuple_len}`".format(
+        tuple_len=len(union_typ_tuple.elts)
+    )
+    left, right = map(attrgetter("id"), union_typ_tuple.elts)
+    return Name(
+        (
+            cdd.sqlalchemy.utils.emit_utils.typ2column_type[right]
+            if right in cdd.sqlalchemy.utils.emit_utils.typ2column_type
+            else cdd.sqlalchemy.utils.emit_utils.typ2column_type.get(left, left)
+        ),
+        Load(),
+        lineno=None,
+        col_offset=None,
+    )
+
+
 __all__ = ["update_args_infer_typ_sqlalchemy"]

cdd/tests/test_parse/test_parser_utils.py

@@ -27,6 +27,23 @@
 class TestParserUtils(TestCase):
     """Test class for parser_utils"""
 
+    def test_get_source_raises(self) -> None:
+        """Tests that `get_source` raises an exception"""
+        with self.assertRaises(TypeError):
+            get_source(None)
+
+        def raise_os_error(_):
+            """raise_OSError"""
+            raise OSError
+
+        with patch("inspect.getsourcelines", raise_os_error), self.assertRaises(
+            OSError
+        ):
+            get_source(min)
+
+        with patch("inspect.getsourcefile", lambda _: None):
+            self.assertIsNone(get_source(raise_os_error))
+
     def test_ir_merge_empty(self) -> None:
         """Tests for `ir_merge` when both are empty"""
         target = {"params": OrderedDict(), "returns": None}
@@ -250,22 +267,14 @@ def test_infer_raise(self) -> None:
         with self.assertRaises(NotImplementedError):
             cdd.shared.parse.utils.parser_utils.infer(None)
 
-    def test_get_source_raises(self) -> None:
-        """Tests that `get_source` raises an exception"""
-        with self.assertRaises(TypeError):
-            get_source(None)
-
-        def raise_os_error(_):
-            """raise_OSError"""
-            raise OSError
-
-        with patch("inspect.getsourcelines", raise_os_error), self.assertRaises(
-            OSError
-        ):
-            get_source(min)
-
-        with patch("inspect.getsourcefile", lambda _: None):
-            self.assertIsNone(get_source(raise_os_error))
+    def test_merge_params(self) -> None:
+        """Tests `merge_params` works"""
+        d0 = {"foo": "bar"}
+        d1 = {"can": "haz"}
+        self.assertDictEqual(
+            cdd.shared.parse.utils.parser_utils.merge_params(deepcopy(d0), d1),
+            {"foo": "bar", "can": "haz"},
+        )
 
 
 unittest_main()

cdd/tests/test_sqlalchemy/test_emit_sqlalchemy_utils.py

@@ -5,6 +5,7 @@
 import ast
 import json
 from ast import (
+    AST,
     Assign,
     Call,
     ClassDef,
@@ -19,8 +20,10 @@
 )
 from collections import OrderedDict
 from copy import deepcopy
+from functools import partial
 from os import mkdir, path
 from tempfile import TemporaryDirectory
+from typing import Callable, List, Optional, Tuple, Union
 from unittest import TestCase
 from unittest.mock import patch
 
@@ -29,7 +32,10 @@
 from cdd.shared.ast_utils import set_value
 from cdd.shared.source_transformer import to_code
 from cdd.shared.types import IntermediateRepr
-from cdd.sqlalchemy.utils.shared_utils import update_args_infer_typ_sqlalchemy
+from cdd.sqlalchemy.utils.shared_utils import (
+    _handle_union_of_length_2,
+    update_args_infer_typ_sqlalchemy,
+)
 from cdd.tests.mocks.ir import (
     intermediate_repr_empty,
     intermediate_repr_no_default_doc,
@@ -296,6 +302,27 @@ def test_update_args_infer_typ_sqlalchemy_when_simple_array_in_typ(self) -> None
     #         gold=Name(id="Small", ctx=Load(), lineno=None, col_offset=None),
     #     )
 
+    def test_update_args_infer_typ_sqlalchemy_early_exit(self) -> None:
+        """Tests that `update_args_infer_typ_sqlalchemy` exits early"""
+        _update_args_infer_typ_sqlalchemy: Callable[
+            [dict], Tuple[bool, Optional[Union[List[AST], Tuple[AST]]]]
+        ] = partial(
+            update_args_infer_typ_sqlalchemy,
+            args=[],
+            name="",
+            nullable=True,
+            x_typ_sql={},
+        )
+        self.assertTupleEqual(
+            _update_args_infer_typ_sqlalchemy({"typ": None}), (False, None)
+        )
+        self.assertTupleEqual(
+            _update_args_infer_typ_sqlalchemy(
+                {"typ": None, "default": cdd.shared.ast_utils.NoneStr},
+            ),
+            (True, None),
+        )
+
     def test_update_with_imports_from_columns(self) -> None:
         """
         Tests basic `cdd.sqlalchemy.utils.emit_utils.update_with_imports_from_columns` usage
@@ -573,5 +600,18 @@ def test_rewrite_fk(self) -> None:
             gold=column_fk_gold,
         )
 
+    def test__handle_union_of_length_2(self) -> None:
+        """Tests that `_handle_union_of_length_2` works"""
+        run_ast_test(
+            self,
+            gen_ast=_handle_union_of_length_2("Union[int, float]"),
+            gold=Name(
+                "Float",
+                Load(),
+                lineno=None,
+                col_offset=None,
+            ),
+        )
+
 
 unittest_main()