update: tests for mixins

Author: VsevolodX

src/py/mat3ra/__init__.py

@@ -1,2 +1,2 @@
-__path__ = __import__('pkgutil').extend_path(__path__, __name__)
+__path__ = __import__("pkgutil").extend_path(__path__, __name__)
 # otherwise, `mat3ra.utils` path leads to an empty __init__.py file in the code.py package

src/py/mat3ra/code/mixins/__init__.py

@@ -4,7 +4,6 @@
 from mat3ra.esse.models.system.description import DescriptionSchema
 from mat3ra.esse.models.system.metadata import MetadataSchema
 from mat3ra.esse.models.system.name import NameEntitySchema
-
 from pydantic import BaseModel
 
 

tests/py/unit/test_mixins.py

@@ -16,7 +16,7 @@ class ExampleDefaultable(DefaultableMixin):
 
     assert instance.key == "value"
     assert instance.number == 42
-    assert hasattr(instance, 'isDefault') and instance.isDefault is True
+    assert hasattr(instance, "isDefault") and instance.isDefault is True
 
 
 def test_named_mixin():