using pre-commit

Author: anikolaienko

Diff for: .pre-commit-config.yaml

@@ -0,0 +1,26 @@
+# See https://pre-commit.com for more information
+# See https://pre-commit.com/hooks.html for more hooks
+repos:
+    - repo: local
+      hooks:
+        - id: black
+          name: black
+          description: "Black: The uncompromising Python code formatter"
+          entry: black
+          language: python
+          require_serial: true
+          types_or: [python, pyi]
+        - id: flake8
+          name: flake8
+          description: '`flake8` is a command-line utility for enforcing style consistency across Python projects.'
+          entry: flake8
+          language: python
+          types: [python]
+          require_serial: true
+        - id: mypy
+          name: mypy
+          description: 'Mypy is a static type checker for Python 3'
+          entry: mypy
+          language: python
+          types: [python]
+          require_serial: true

Diff for: poetry.lock

@@ -37,6 +37,7 @@ mypy = "^0.910"
 tortoise-orm = "^0.17.4"
 pydantic = "^1.8.2"
 coverage = "^6.2"
+pre-commit = "^2.16.0"
 
 [build-system]
 requires = ["poetry_core>=1.0.0"]

Diff for: pyproject.toml

@@ -22,7 +22,9 @@ def __init__(self, num: int, text: str, flag: bool) -> None:
 
     @classmethod
     def fields(cls) -> Iterable[str]:
-        return (field for field in cls.__init__.__annotations__.keys() if field != "return")
+        return (
+            field for field in cls.__init__.__annotations__.keys() if field != "return"
+        )
 
 
 class AnotherClass:
@@ -68,12 +70,16 @@ def setUp(self):
     def test_add_spec__adds_to_internal_collection(self):
         self.mapper.add_spec(ParentClass, custom_spec_func)
         assert ParentClass in self.mapper._class_specs
-        assert ["num", "text", "flag"] == self.mapper._class_specs[ParentClass](ChildClass)
+        assert ["num", "text", "flag"] == self.mapper._class_specs[ParentClass](
+            ChildClass
+        )
 
     def test_add_spec__error_on_adding_same_class_spec(self):
         self.mapper.add_spec(ParentClass, custom_spec_func)
         with pytest.raises(DuplicatedRegistrationError):
-            self.mapper.add_spec(ParentClass, lambda concrete_type: ["field1", "field2"])
+            self.mapper.add_spec(
+                ParentClass, lambda concrete_type: ["field1", "field2"]
+            )
 
     def test_add_spec__adds_to_internal_collection_for_classifier(self):
         self.mapper.add_spec(classifier_func, spec_func)
@@ -85,7 +91,9 @@ def test_add_spec__adds_to_internal_collection_for_classifier(self):
     def test_add_spec__error_on_duplicated_registration(self):
         self.mapper.add_spec(classifier_func, spec_func)
         with pytest.raises(DuplicatedRegistrationError):
-            self.mapper.add_spec(classifier_func, lambda concrete_type: ["field1", "field2"])
+            self.mapper.add_spec(
+                classifier_func, lambda concrete_type: ["field1", "field2"]
+            )
 
     def test_add__appends_class_to_class_mapping(self):
         with pytest.raises(MappingError):