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from django import forms
from django.test import TestCase
from py.test import raises
from graphene_django.tests.models import Pet, Film, FilmDetails
from ..mutation import DjangoFormMutation, DjangoModelFormMutation
class MyForm(forms.Form):
text = forms.CharField()
class PetForm(forms.ModelForm):
class Meta:
model = Pet
fields = "__all__"
def test_needs_form_class():
with raises(Exception) as exc:
class MyMutation(DjangoFormMutation):
pass
assert exc.value.args[0] == "form_class is required for DjangoFormMutation"
def test_has_output_fields():
class MyMutation(DjangoFormMutation):
class Meta:
form_class = MyForm
assert "errors" in MyMutation._meta.fields
def test_has_input_fields():
class MyMutation(DjangoFormMutation):
class Meta:
form_class = MyForm
assert "text" in MyMutation.Input._meta.fields
class ModelFormMutationTests(TestCase):
def test_default_meta_fields(self):
class PetMutation(DjangoModelFormMutation):
class Meta:
form_class = PetForm
self.assertEqual(PetMutation._meta.model, Pet)
self.assertEqual(PetMutation._meta.return_field_name, "pet")
self.assertIn("pet", PetMutation._meta.fields)
def test_default_input_meta_fields(self):
class PetMutation(DjangoModelFormMutation):
class Meta:
form_class = PetForm
self.assertEqual(PetMutation._meta.model, Pet)
self.assertEqual(PetMutation._meta.return_field_name, "pet")
self.assertIn("name", PetMutation.Input._meta.fields)
self.assertIn("client_mutation_id", PetMutation.Input._meta.fields)
self.assertIn("id", PetMutation.Input._meta.fields)
def test_exclude_fields_input_meta_fields(self):
class PetMutation(DjangoModelFormMutation):
class Meta:
form_class = PetForm
exclude_fields = ["id"]
self.assertEqual(PetMutation._meta.model, Pet)
self.assertEqual(PetMutation._meta.return_field_name, "pet")
self.assertIn("name", PetMutation.Input._meta.fields)
self.assertIn("age", PetMutation.Input._meta.fields)
self.assertIn("client_mutation_id", PetMutation.Input._meta.fields)
self.assertNotIn("id", PetMutation.Input._meta.fields)
def test_return_field_name_is_camelcased(self):
class PetMutation(DjangoModelFormMutation):
class Meta:
form_class = PetForm
model = FilmDetails
self.assertEqual(PetMutation._meta.model, FilmDetails)
self.assertEqual(PetMutation._meta.return_field_name, "filmDetails")
def test_custom_return_field_name(self):
class PetMutation(DjangoModelFormMutation):
class Meta:
form_class = PetForm
model = Film
return_field_name = "animal"
self.assertEqual(PetMutation._meta.model, Film)
self.assertEqual(PetMutation._meta.return_field_name, "animal")
self.assertIn("animal", PetMutation._meta.fields)
def test_model_form_mutation_mutate(self):
class PetMutation(DjangoModelFormMutation):
class Meta:
form_class = PetForm
pet = Pet.objects.create(name="Axel", age=10)
result = PetMutation.mutate_and_get_payload(
None, None, id=pet.pk, name="Mia", age=10
)
self.assertEqual(Pet.objects.count(), 1)
pet.refresh_from_db()
self.assertEqual(pet.name, "Mia")
self.assertEqual(result.errors, [])
def test_model_form_mutation_updates_existing_(self):
class PetMutation(DjangoModelFormMutation):
class Meta:
form_class = PetForm
result = PetMutation.mutate_and_get_payload(None, None, name="Mia", age=10)
self.assertEqual(Pet.objects.count(), 1)
pet = Pet.objects.get()
self.assertEqual(pet.name, "Mia")
self.assertEqual(pet.age, 10)
self.assertEqual(result.errors, [])
def test_model_form_mutation_mutate_invalid_form(self):
class PetMutation(DjangoModelFormMutation):
class Meta:
form_class = PetForm
result = PetMutation.mutate_and_get_payload(None, None)
# A pet was not created
self.assertEqual(Pet.objects.count(), 0)
fields_w_error = [e.field for e in result.errors]
self.assertEqual(len(result.errors), 2)
self.assertIn("name", fields_w_error)
self.assertEqual(result.errors[0].messages, ["This field is required."])
self.assertIn("age", fields_w_error)
self.assertEqual(result.errors[1].messages, ["This field is required."])