refactor[node.py]: Make plain value to be set as required

ntc/__init__.py

@@ -2,4 +2,4 @@
 from .leaf import *
 from .node import *
 
-__version__ = "0.3.3"
+__version__ = "0.4.0"

ntc/node.py

@@ -255,7 +255,7 @@ def _set_new(self, key: str, value: Any) -> None:
             value_to_set = leaf_spec.clone()
             value_to_set.value = value
         else:
-            value_to_set = CfgLeaf(value, type(value))
+            value_to_set = CfgLeaf(value, type(value), required=True)
 
         if isinstance(value_to_set, CfgLeaf):
             if leaf_spec:

tests/data/required/bad_plain_value.py

@@ -0,0 +1,5 @@
+from ntc import CN
+from tests.data.required.required_plain_value import cfg
+
+cfg = CN(cfg)
+cfg.REQUIRED = None

tests/data/required/plain_value.py

@@ -0,0 +1,5 @@
+from ntc import CN
+from tests.data.required.required_plain_value import cfg
+
+cfg = CN(cfg)
+cfg.REQUIRED = 12

tests/data/required/required_plain_value.py

@@ -0,0 +1,4 @@
+from ..base_cfg import cfg
+
+cfg = cfg.clone()
+cfg.REQUIRED = 42

tests/test_required.py

@@ -44,3 +44,13 @@ def test_subclass():
     cfg = CN.load(DATA_DIR / "subclass.py")
     assert len(cfg.REQUIRED_SUBCLASSES) > 0
     assert issubclass(cfg.REQUIRED_SUBCLASSES.ONE, BaseClass)
+
+
+def test_plain_value():
+    cfg = CN.load(DATA_DIR / "plain_value.py")
+    assert cfg.REQUIRED == 12
+
+
+def test_bad_plain_value():
+    with pytest.raises(MissingRequired):
+        CN.load(DATA_DIR / "bad_plain_value.py")