run black over stubs, add checking to travis

django-stubs-generated/db/migrations/operations/fields.pyi

@@ -8,7 +8,6 @@ from django.db.models.fields import Field, SlugField
 from .base import Operation
 from .utils import is_referenced_by_foreign_key
 
-
 class FieldOperation(Operation):
     model_name: Any = ...
     name: Any = ...
@@ -17,54 +16,24 @@ class FieldOperation(Operation):
     def name_lower(self) -> str: ...
     def is_same_model_operation(self, operation: FieldOperation) -> bool: ...
     def is_same_field_operation(self, operation: AddField) -> bool: ...
-    def references_model(
-        self, name: str, app_label: Optional[str] = ...
-    ) -> bool: ...
-    def references_field(
-        self, model_name: str, name: str, app_label: str = ...
-    ) -> bool: ...
-    def reduce(
-        self,
-        operation: Operation,
-        in_between: List[Operation],
-        app_label: str = ...,
-    ) -> bool: ...
+    def references_model(self, name: str, app_label: Optional[str] = ...) -> bool: ...
+    def references_field(self, model_name: str, name: str, app_label: str = ...) -> bool: ...
+    def reduce(self, operation: Operation, in_between: List[Operation], app_label: str = ...) -> bool: ...
 
 class AddField(FieldOperation):
     field: Any = ...
     preserve_default: Any = ...
-    def __init__(
-        self,
-        model_name: str,
-        name: str,
-        field: Field,
-        preserve_default: bool = ...,
-    ) -> None: ...
-    def deconstruct(
-        self
-    ) -> Tuple[str, List[Any], Dict[str, Union[bool, Field, str]]]: ...
+    def __init__(self, model_name: str, name: str, field: Field, preserve_default: bool = ...) -> None: ...
+    def deconstruct(self) -> Tuple[str, List[Any], Dict[str, Union[bool, Field, str]]]: ...
     def state_forwards(self, app_label: str, state: ProjectState) -> None: ...
     def database_forwards(
-        self,
-        app_label: str,
-        schema_editor: DatabaseSchemaEditor,
-        from_state: ProjectState,
-        to_state: ProjectState,
+        self, app_label: str, schema_editor: DatabaseSchemaEditor, from_state: ProjectState, to_state: ProjectState
     ) -> None: ...
     def database_backwards(
-        self,
-        app_label: str,
-        schema_editor: DatabaseSchemaEditor,
-        from_state: ProjectState,
-        to_state: ProjectState,
+        self, app_label: str, schema_editor: DatabaseSchemaEditor, from_state: ProjectState, to_state: ProjectState
     ) -> None: ...
     def describe(self) -> str: ...
-    def reduce(
-        self,
-        operation: Operation,
-        in_between: List[Operation],
-        app_label: str = ...,
-    ) -> bool: ...
+    def reduce(self, operation: Operation, in_between: List[Operation], app_label: str = ...) -> bool: ...
 
 class RemoveField(FieldOperation):
     model_name: str
@@ -73,73 +42,36 @@ class RemoveField(FieldOperation):
     def deconstruct(self) -> Tuple[str, List[Any], Dict[str, str]]: ...
     def state_forwards(self, app_label: str, state: ProjectState) -> None: ...
     def database_forwards(
-        self,
-        app_label: str,
-        schema_editor: DatabaseSchemaEditor,
-        from_state: ProjectState,
-        to_state: ProjectState,
+        self, app_label: str, schema_editor: DatabaseSchemaEditor, from_state: ProjectState, to_state: ProjectState
     ) -> None: ...
     def database_backwards(
-        self,
-        app_label: str,
-        schema_editor: DatabaseSchemaEditor,
-        from_state: ProjectState,
-        to_state: ProjectState,
+        self, app_label: str, schema_editor: DatabaseSchemaEditor, from_state: ProjectState, to_state: ProjectState
     ) -> None: ...
     def describe(self) -> str: ...
 
 class AlterField(FieldOperation):
     field: Any = ...
     preserve_default: Any = ...
-    def __init__(
-        self,
-        model_name: str,
-        name: str,
-        field: Field,
-        preserve_default: bool = ...,
-    ) -> None: ...
-    def deconstruct(
-        self
-    ) -> Tuple[str, List[Any], Dict[str, Union[SlugField, str]]]: ...
+    def __init__(self, model_name: str, name: str, field: Field, preserve_default: bool = ...) -> None: ...
+    def deconstruct(self) -> Tuple[str, List[Any], Dict[str, Union[SlugField, str]]]: ...
     def state_forwards(self, app_label: str, state: ProjectState) -> None: ...
     def database_forwards(
-        self,
-        app_label: str,
-        schema_editor: DatabaseSchemaEditor,
-        from_state: ProjectState,
-        to_state: ProjectState,
-    ) -> None: ...
-    def database_backwards(
-        self, app_label: Any, schema_editor: Any, from_state: Any, to_state: Any
+        self, app_label: str, schema_editor: DatabaseSchemaEditor, from_state: ProjectState, to_state: ProjectState
     ) -> None: ...
+    def database_backwards(self, app_label: Any, schema_editor: Any, from_state: Any, to_state: Any) -> None: ...
     def describe(self) -> str: ...
-    def reduce(
-        self,
-        operation: Operation,
-        in_between: List[AlterField],
-        app_label: str = ...,
-    ) -> bool: ...
+    def reduce(self, operation: Operation, in_between: List[AlterField], app_label: str = ...) -> bool: ...
 
 class RenameField(FieldOperation):
     old_name: Any = ...
     new_name: Any = ...
-    def __init__(
-        self, model_name: str, old_name: str, new_name: str
-    ) -> None: ...
+    def __init__(self, model_name: str, old_name: str, new_name: str) -> None: ...
     def old_name_lower(self): ...
     def new_name_lower(self) -> str: ...
     def deconstruct(self): ...
     def state_forwards(self, app_label: Any, state: Any) -> None: ...
-    def database_forwards(
-        self, app_label: Any, schema_editor: Any, from_state: Any, to_state: Any
-    ) -> None: ...
-    def database_backwards(
-        self, app_label: Any, schema_editor: Any, from_state: Any, to_state: Any
-    ) -> None: ...
+    def database_forwards(self, app_label: Any, schema_editor: Any, from_state: Any, to_state: Any) -> None: ...
+    def database_backwards(self, app_label: Any, schema_editor: Any, from_state: Any, to_state: Any) -> None: ...
     def describe(self): ...
-    def references_field(
-        self, model_name: str, name: str, app_label: str = ...
-    ) -> bool: ...
-    def reduce(
-        self, operation: Operation, in_between: List[Any], app_label: str = ...
-    ) -> bool: ...
+    def references_field(self, model_name: str, name: str, app_label: str = ...) -> bool: ...
+    def reduce(self, operation: Operation, in_between: List[Any], app_label: str = ...) -> bool: ...