Reduce cognitive complexity and typo fixes

Makefile

@@ -12,6 +12,10 @@ dev-setup:
 tests:
 	PYTHONPATH=. pytest graphene_django --cov=graphene_django -vv
 
+.PHONY: tests-repeat ## Run unit tests 100 times to possibly identify flaky unit tests (and run them in parallel)
+tests-repeat:
+	PYTHONPATH=. pytest graphene_django --cov=graphene_django -vv --count 100 -n logical
+
 .PHONY: format ## Format code
 format:
 	black graphene_django examples setup.py

docs/settings.rst

@@ -6,7 +6,7 @@ Graphene-Django can be customised using settings. This page explains each settin
 Usage
 -----
 
-Add settings to your Django project by creating a Dictonary with name ``GRAPHENE`` in the project's ``settings.py``:
+Add settings to your Django project by creating a Dictionary with name ``GRAPHENE`` in the project's ``settings.py``:
 
 .. code:: python
 

examples/cookbook/dummy_data.json

@@ -231,7 +231,7 @@
     "fields": {
       "category": 3,
       "name": "Newt",
-      "notes": "Braised and Confuesd"
+      "notes": "Braised and Confused"
     },
     "model": "ingredients.ingredient",
     "pk": 5

examples/starwars/data.py

@@ -28,17 +28,17 @@ def initialize():
 
     # Yeah, technically it's Corellian. But it flew in the service of the rebels,
     # so for the purposes of this demo it's a rebel ship.
-    falcon = Ship(id="4", name="Millenium Falcon", faction=rebels)
+    falcon = Ship(id="4", name="Millennium Falcon", faction=rebels)
     falcon.save()
 
-    homeOne = Ship(id="5", name="Home One", faction=rebels)
-    homeOne.save()
+    home_one = Ship(id="5", name="Home One", faction=rebels)
+    home_one.save()
 
-    tieFighter = Ship(id="6", name="TIE Fighter", faction=empire)
-    tieFighter.save()
+    tie_fighter = Ship(id="6", name="TIE Fighter", faction=empire)
+    tie_fighter.save()
 
-    tieInterceptor = Ship(id="7", name="TIE Interceptor", faction=empire)
-    tieInterceptor.save()
+    tie_interceptor = Ship(id="7", name="TIE Interceptor", faction=empire)
+    tie_interceptor.save()
 
     executor = Ship(id="8", name="Executor", faction=empire)
     executor.save()

examples/starwars/tests/test_mutation.py

@@ -40,7 +40,7 @@ def test_mutations():
                         {"node": {"id": "U2hpcDox", "name": "X-Wing"}},
                         {"node": {"id": "U2hpcDoy", "name": "Y-Wing"}},
                         {"node": {"id": "U2hpcDoz", "name": "A-Wing"}},
-                        {"node": {"id": "U2hpcDo0", "name": "Millenium Falcon"}},
+                        {"node": {"id": "U2hpcDo0", "name": "Millennium Falcon"}},
                         {"node": {"id": "U2hpcDo1", "name": "Home One"}},
                         {"node": {"id": "U2hpcDo5", "name": "Peter"}},
                     ]

graphene_django/debug/middleware.py

@@ -1,6 +1,6 @@
 from django.db import connections
 
-from .exception.formating import wrap_exception
+from .exception.formatting import wrap_exception
 from .sql.tracking import unwrap_cursor, wrap_cursor
 from .types import DjangoDebug
 

graphene_django/filter/tests/conftest.py

@@ -44,7 +44,7 @@ class Meta:
                 "name": ["exact", "contains"],
             }
 
-        # Those are actually usable with our Query fixture bellow
+        # Those are actually usable with our Query fixture below
         tags__contains = ArrayFilter(field_name="tags", lookup_expr="contains")
         tags__overlap = ArrayFilter(field_name="tags", lookup_expr="overlap")
         tags = ArrayFilter(field_name="tags", lookup_expr="exact")

graphene_django/filter/tests/test_fields.py

@@ -789,7 +789,7 @@ class Query(ObjectType):
 
     query = """
         query NodeFilteringQuery {
-            allReporters(orderBy: "-firtsnaMe") {
+            allReporters(orderBy: "-firstname") {
                 edges {
                     node {
                         firstName
@@ -802,7 +802,7 @@ class Query(ObjectType):
     assert result.errors
 
 
-def test_order_by_is_perserved():
+def test_order_by_is_preserved():
     class ReporterType(DjangoObjectType):
         class Meta:
             model = Reporter

graphene_django/filter/utils.py

@@ -8,27 +8,109 @@
 from .filterset import custom_filterset_factory, setup_filterset
 
 
-def get_field_type(registry, model, field_name):
+def get_field_type_from_registry(registry, model, field_name):
     """
-    Try to get a model field corresponding Graphql type from the DjangoObjectType.
+    Try to get a model field corresponding GraphQL type from the DjangoObjectType.
     """
     object_type = registry.get_type_for_model(model)
-    if object_type:
-        object_type_field = object_type._meta.fields.get(field_name)
-        if object_type_field:
-            field_type = object_type_field.type
-            if isinstance(field_type, graphene.NonNull):
-                field_type = field_type.of_type
-            return field_type
-    return None
+    if not object_type:
+        return None
+
+    object_type_field = object_type._meta.fields.get(field_name)
+    if not object_type_field:
+        return None
+
+    field_type = object_type_field.type
+    if isinstance(field_type, graphene.NonNull):
+        field_type = field_type.of_type
+    return field_type
+
+
+def get_field_type_from_model_field(model_field, form_field, registry):
+    """
+    Get the field type from the model field.
+
+    If the model field is a foreign key, then we need to get the type from the related model.
+    """
+    if (
+        isinstance(form_field, forms.ModelChoiceField)
+        or isinstance(form_field, forms.ModelMultipleChoiceField)
+        or isinstance(form_field, GlobalIDMultipleChoiceField)
+        or isinstance(form_field, GlobalIDFormField)
+    ):
+        # Foreign key have dynamic types and filtering on a foreign key actually means filtering on its ID.
+        return get_field_type_from_registry(registry, model_field.related_model, "id")
+
+    return get_field_type_from_registry(registry, model_field.model, model_field.name)
+
+
+def get_form_field(model_field, filter_field, required):
+    """
+    Retrieve the form field to use for the filter.
+
+    Get the form field either from:
+    #  1. the formfield corresponding to the model field
+    #  2. the field defined on filter
+
+    Returns None if no form field can be found.
+    """
+    form_field = None
+    if hasattr(model_field, "formfield"):
+        form_field = model_field.formfield(required=required)
+    if not form_field:
+        form_field = filter_field.field
+    return form_field
+
+
+def get_field_type_and_form_field_for_implicit_filter(
+    model, filter_type, filter_field, registry, required
+):
+    """
+    Get the filter type for filters that are not explicitly declared.
+
+    Returns a tuple of (field_type, form_field) where:
+    - field_type is the type of the filter argument
+    - form_field is the form field to use to validate the input value
+    """
+    if filter_type == "isnull":
+        # Filter type is boolean, no form field.
+        return (graphene.Boolean, None)
+
+    model_field = get_model_field(model, filter_field.field_name)
+    form_field = get_form_field(model_field, filter_field, required)
+
+    # First try to get the matching field type from the GraphQL DjangoObjectType
+    if model_field:
+        field_type = get_field_type_from_model_field(model_field, form_field, registry)
+        return (field_type, form_field)
+
+    return (None, None)
+
+
+def get_field_type_for_explicit_filter(filter_field, form_field):
+    """
+    Fallback on converting the form field either because:
+    - it's an explicitly declared filters
+    - we did not manage to get the type from the model type
+    """
+    from ..forms.converter import convert_form_field
+
+    form_field = form_field or filter_field.field
+    return convert_form_field(form_field).get_type()
+
+
+def is_filter_list_or_range(filter_field):
+    """
+    Determine if the filter is a ListFilter or RangeFilter.
+    """
+    return isinstance(filter_field, ListFilter) or isinstance(filter_field, RangeFilter)
 
 
 def get_filtering_args_from_filterset(filterset_class, type):
     """
     Inspect a FilterSet and produce the arguments to pass to a Graphene Field.
     These arguments will be available to filter against in the GraphQL API.
     """
-    from ..forms.converter import convert_form_field
 
     args = {}
     model = filterset_class._meta.model
@@ -43,55 +125,27 @@ def get_filtering_args_from_filterset(filterset_class, type):
             isinstance(filter_field, TypedFilter)
             and filter_field.input_type is not None
         ):
-            # First check if the filter input type has been explicitely given
+            # First check if the filter input type has been explicitly given
             field_type = filter_field.input_type
         else:
             if name not in filterset_class.declared_filters or isinstance(
                 filter_field, TypedFilter
             ):
-                # Get the filter field for filters that are no explicitly declared.
-                if filter_type == "isnull":
-                    field_type = graphene.Boolean
-                else:
-                    model_field = get_model_field(model, filter_field.field_name)
-
-                    # Get the form field either from:
-                    #  1. the formfield corresponding to the model field
-                    #  2. the field defined on filter
-                    if hasattr(model_field, "formfield"):
-                        form_field = model_field.formfield(required=required)
-                    if not form_field:
-                        form_field = filter_field.field
-
-                    # First try to get the matching field type from the GraphQL DjangoObjectType
-                    if model_field:
-                        if (
-                            isinstance(form_field, forms.ModelChoiceField)
-                            or isinstance(form_field, forms.ModelMultipleChoiceField)
-                            or isinstance(form_field, GlobalIDMultipleChoiceField)
-                            or isinstance(form_field, GlobalIDFormField)
-                        ):
-                            # Foreign key have dynamic types and filtering on a foreign key actually means filtering on its ID.
-                            field_type = get_field_type(
-                                registry, model_field.related_model, "id"
-                            )
-                        else:
-                            field_type = get_field_type(
-                                registry, model_field.model, model_field.name
-                            )
+                (
+                    field_type,
+                    form_field,
+                ) = get_field_type_and_form_field_for_implicit_filter(
+                    model, filter_type, filter_field, registry, required
+                )
 
             if not field_type:
-                # Fallback on converting the form field either because:
-                #  - it's an explicitly declared filters
-                #  - we did not manage to get the type from the model type
-                form_field = form_field or filter_field.field
-                field_type = convert_form_field(form_field).get_type()
-
-            if isinstance(filter_field, ListFilter) or isinstance(
-                filter_field, RangeFilter
-            ):
-                # Replace InFilter/RangeFilter filters (`in`, `range`) argument type to be a list of
-                # the same type as the field. See comments in `replace_csv_filters` method for more details.
+                field_type = get_field_type_for_explicit_filter(
+                    filter_field, form_field
+                )
+
+            # Replace InFilter/RangeFilter filters (`in`, `range`) argument type to be a list of
+            # the same type as the field. See comments in `replace_csv_filters` method for more details.
+            if is_filter_list_or_range(filter_field):
                 field_type = graphene.List(field_type)
 
         args[name] = graphene.Argument(

graphene_django/forms/types.py

@@ -4,7 +4,7 @@
 from graphene.utils.str_converters import to_camel_case
 
 from ..converter import BlankValueField
-from ..types import ErrorType  # noqa Import ErrorType for backwards compatability
+from ..types import ErrorType  # noqa Import ErrorType for backwards compatibility
 from .mutation import fields_for_form
 
 
@@ -60,7 +60,7 @@ def mutate(_root, _info, data):
                 and isinstance(object_type._meta.fields[name], BlankValueField)
             ):
                 # Field type BlankValueField here means that field
-                # with choises have been converted to enum
+                # with choices have been converted to enum
                 # (BlankValueField is using only for that task ?)
                 setattr(cls, name, cls.get_enum_cnv_cls_instance(name, object_type))
             elif (

graphene_django/tests/models.py

@@ -97,7 +97,7 @@ class Meta:
 
 class APNewsReporter(Reporter):
     """
-    This class only inherits from Reporter for testing multi table inheritence
+    This class only inherits from Reporter for testing multi table inheritance
     similar to what you'd see in django-polymorphic
     """
 

graphene_django/tests/test_types.py

@@ -30,7 +30,7 @@ class ArticleConnection(Connection):
 
     test = String()
 
-    def resolve_test():
+    def resolve_test(self):
         return "test"
 
     class Meta:

graphene_django/types.py

@@ -62,10 +62,7 @@ def construct_fields(
     return fields
 
 
-def validate_fields(type_, model, fields, only_fields, exclude_fields):
-    # Validate the given fields against the model's fields and custom fields
-    all_field_names = set(fields.keys())
-    only_fields = only_fields if only_fields is not ALL_FIELDS else ()
+def validate_only_fields(only_fields, all_field_names, model, type_):
     for name in only_fields or ():
         if name in all_field_names:
             continue
@@ -83,20 +80,22 @@ def validate_fields(type_, model, fields, only_fields, exclude_fields):
                     type_=type_,
                 )
             )
+            continue
 
-        else:
-            warnings.warn(
-                (
-                    'Field name "{field_name}" doesn\'t exist on Django model "{app_label}.{object_name}". '
-                    'Consider removing the field from the "fields" list of DjangoObjectType "{type_}" because it has no effect.'
-                ).format(
-                    field_name=name,
-                    app_label=model._meta.app_label,
-                    object_name=model._meta.object_name,
-                    type_=type_,
-                )
+        warnings.warn(
+            (
+                'Field name "{field_name}" doesn\'t exist on Django model "{app_label}.{object_name}". '
+                'Consider removing the field from the "fields" list of DjangoObjectType "{type_}" because it has no effect.'
+            ).format(
+                field_name=name,
+                app_label=model._meta.app_label,
+                object_name=model._meta.object_name,
+                type_=type_,
             )
+        )
 
+
+def validate_exclude_fields(exclude_fields, all_field_names, model, type_):
     # Validate exclude fields
     for name in exclude_fields or ():
         if name in all_field_names:
@@ -107,19 +106,29 @@ def validate_fields(type_, model, fields, only_fields, exclude_fields):
                     'Either remove the custom field or remove the field from the "exclude" list.'
                 ).format(field_name=name, type_=type_)
             )
-        else:
-            if not hasattr(model, name):
-                warnings.warn(
-                    (
-                        'Django model "{app_label}.{object_name}" does not have a field or attribute named "{field_name}". '
-                        'Consider removing the field from the "exclude" list of DjangoObjectType "{type_}" because it has no effect'
-                    ).format(
-                        field_name=name,
-                        app_label=model._meta.app_label,
-                        object_name=model._meta.object_name,
-                        type_=type_,
-                    )
+            continue
+
+        if not hasattr(model, name):
+            warnings.warn(
+                (
+                    'Django model "{app_label}.{object_name}" does not have a field or attribute named "{field_name}". '
+                    'Consider removing the field from the "exclude" list of DjangoObjectType "{type_}" because it has no effect'
+                ).format(
+                    field_name=name,
+                    app_label=model._meta.app_label,
+                    object_name=model._meta.object_name,
+                    type_=type_,
                 )
+            )
+
+
+def validate_fields(type_, model, fields, only_fields, exclude_fields):
+    # Validate the given fields against the model's fields and custom fields
+    all_field_names = set(fields.keys())
+    only_fields = only_fields if only_fields is not ALL_FIELDS else ()
+
+    validate_only_fields(only_fields, all_field_names, model, type_)
+    validate_exclude_fields(exclude_fields, all_field_names, model, type_)
 
 
 class DjangoObjectTypeOptions(ObjectTypeOptions):

graphene_django/utils/testing.py

@@ -128,7 +128,7 @@ def _client(self, client):
         )
         self.client = client
 
-    def assertResponseNoErrors(self, resp, msg=None):
+    def assert_response_no_errors(self, resp, msg=None):
         """
         Assert that the call went through correctly. 200 means the syntax is ok, if there are no `errors`,
         the call was fine.
@@ -138,7 +138,7 @@ def assertResponseNoErrors(self, resp, msg=None):
         self.assertEqual(resp.status_code, 200, msg or content)
         self.assertNotIn("errors", list(content.keys()), msg or content)
 
-    def assertResponseHasErrors(self, resp, msg=None):
+    def assert_response_has_errors(self, resp, msg=None):
         """
         Assert that the call was failing. Take care: Even with errors, GraphQL returns status 200!
         :resp HttpResponse: Response

graphene_django/views.py

@@ -103,16 +103,15 @@ def __init__(
     ):
         if not schema:
             schema = graphene_settings.SCHEMA
+        self.schema = schema or self.schema
 
         if middleware is None:
             middleware = graphene_settings.MIDDLEWARE
+        if isinstance(middleware, MiddlewareManager):
+            self.middleware = middleware
+        else:
+            self.middleware = list(instantiate_middleware(middleware))
 
-        self.schema = schema or self.schema
-        if middleware is not None:
-            if isinstance(middleware, MiddlewareManager):
-                self.middleware = middleware
-            else:
-                self.middleware = list(instantiate_middleware(middleware))
         self.root_value = root_value
         self.pretty = pretty or self.pretty
         self.graphiql = graphiql or self.graphiql
@@ -285,6 +284,25 @@ def parse_body(self, request):
 
         return {}
 
+    def validate_query_request_type(
+        self, request, document, operation_name, show_graphiql
+    ):
+        if request.method.lower() == "get":
+            operation_ast = get_operation_ast(document, operation_name)
+            if (
+                operation_ast
+                and operation_ast.operation != OperationType.QUERY
+                and not show_graphiql
+            ):
+                raise HttpError(
+                    HttpResponseNotAllowed(
+                        ["POST"],
+                        "Can only perform a {} operation from a POST request.".format(
+                            operation_ast.operation.value
+                        ),
+                    )
+                )
+
     def execute_graphql_request(
         self, request, data, query, variables, operation_name, show_graphiql=False
     ):
@@ -298,20 +316,12 @@ def execute_graphql_request(
         except Exception as e:
             return ExecutionResult(errors=[e])
 
-        if request.method.lower() == "get":
-            operation_ast = get_operation_ast(document, operation_name)
-            if operation_ast and operation_ast.operation != OperationType.QUERY:
-                if show_graphiql:
-                    return None
+        self.validate_query_request_type(
+            request, document, operation_name, show_graphiql
+        )
+        if show_graphiql:
+            return None
 
-                raise HttpError(
-                    HttpResponseNotAllowed(
-                        ["POST"],
-                        "Can only perform a {} operation from a POST request.".format(
-                            operation_ast.operation.value
-                        ),
-                    )
-                )
         try:
             extra_options = {}
             if self.execution_context_class:
@@ -328,14 +338,7 @@ def execute_graphql_request(
             options.update(extra_options)
 
             operation_ast = get_operation_ast(document, operation_name)
-            if (
-                operation_ast
-                and operation_ast.operation == OperationType.MUTATION
-                and (
-                    graphene_settings.ATOMIC_MUTATIONS is True
-                    or connection.settings_dict.get("ATOMIC_MUTATIONS", False) is True
-                )
-            ):
+            if self.is_atomic_mutation_enabled(operation_ast, connection):
                 with transaction.atomic():
                     result = self.schema.execute(**options)
                     if getattr(request, MUTATION_ERRORS_FLAG, False) is True:
@@ -400,3 +403,14 @@ def get_content_type(request):
         meta = request.META
         content_type = meta.get("CONTENT_TYPE", meta.get("HTTP_CONTENT_TYPE", ""))
         return content_type.split(";", 1)[0].lower()
+
+    @staticmethod
+    def is_atomic_mutation_enabled(operation_ast, connection):
+        return (
+            operation_ast
+            and operation_ast.operation == OperationType.MUTATION
+            and (
+                graphene_settings.ATOMIC_MUTATIONS is True
+                or connection.settings_dict.get("ATOMIC_MUTATIONS", False) is True
+            )
+        )

setup.py

@@ -22,6 +22,8 @@
     "pytz",
     "django-filter>=22.1",
     "pytest-django>=4.5.2",
+    "pytest-repeat>=0.9.1",
+    "pytest-xdist>=3.3.1",
 ] + rest_framework_require