more test cases

pyproject.toml

@@ -35,8 +35,8 @@ classifiers = [
 dependencies = [
     'importlib-metadata; python_version<"3.9"',
     'packaging',
-    'pydantic',
-    'runtype'
+    'frozendict',
+    'typeguard'
 ]
 dynamic = ["version"]
 

src/dabmodel/__init__.py

@@ -13,6 +13,7 @@ Main module __init__ file.
 from .__metadata__ import __version__, __Summuary__, __Name__
 from .model import (
     DABFieldInfo,
+    DABField,
     BaseAppliance,
     BaseFeature,
     DABModelException,
@@ -25,4 +26,9 @@ from .model import (
     InvalidFieldValue,
     InvalidFieldAnnotation,
     IncompletelyAnnotatedField,
+    ImportForbidden,
+    FunctionForbidden,
+    FrozenDABField,
+    InvalidFeatureInheritance,
+    FeatureNotBound,
 )

src/dabmodel/__metadata__.py

@@ -15,20 +15,26 @@ import warnings
 
 try:  # pragma: no cover
     __version__ = version("dabmodel")
-except PackageNotFoundError: # pragma: no cover
-    warnings.warn("can not read __version__, assuming local test context, setting it to ?.?.?")
+except PackageNotFoundError:  # pragma: no cover
+    warnings.warn(
+        "can not read __version__, assuming local test context, setting it to ?.?.?"
+    )
     __version__ = "?.?.?"
 
 try:  # pragma: no cover
     dist = distribution("dabmodel")
     __Summuary__ = dist.metadata["Summary"]
 except PackageNotFoundError:  # pragma: no cover
-    warnings.warn('can not read dist.metadata["Summary"], assuming local test context, setting it to <dabmodel description>')
+    warnings.warn(
+        'can not read dist.metadata["Summary"], assuming local test context, setting it to <dabmodel description>'
+    )
     __Summuary__ = "dabmodel description"
 
 try:  # pragma: no cover
     dist = distribution("dabmodel")
     __Name__ = dist.metadata["Name"]
 except PackageNotFoundError:  # pragma: no cover
-    warnings.warn('can not read dist.metadata["Name"], assuming local test context, setting it to <dabmodel>')
+    warnings.warn(
+        'can not read dist.metadata["Name"], assuming local test context, setting it to <dabmodel>'
+    )
     __Name__ = "dabmodel"

src/dabmodel/tools.py

@@ -1,13 +1,17 @@
+"""library's internal tools"""
+
 from uuid import UUID
 from datetime import datetime
 import json
 
 
 class DABJSONEncoder(json.JSONEncoder):
-    def default(self, obj):
-        if isinstance(obj, UUID):
-            # if the obj is uuid, we simply return the value of uuid
-            return obj.hex
-        elif isinstance(obj, datetime):
-            return str(obj)
-        return json.JSONEncoder.default(self, obj)
+    """allows to JSON encode non supported data type"""
+
+    def default(self, o):
+        if isinstance(o, UUID):
+            # if the o is uuid, we simply return the value of uuid
+            return o.hex
+        if isinstance(o, datetime):
+            return str(o)
+        return json.JSONEncoder.default(self, o)