Hypothesis DRF
pip install hypothesis-drf==1.0.0
Hypothesis strategy for Django REST framework serializers.
Generate data that is valid according to a DRF serializer
URLField
can be slow when generating the first example*RelatedField
gets first object in queryset, not randompip install hypothesis-drf
from hypothesis_drf import from_serializer, from_field
from rest_framework import serializers
class ExampleSerializer(serializers.Serializer):
name = serializers.CharField(min_length=3, max_length=8)
amount = serializers.IntegerField(min_value=200, max_value=500)
from_serializer(ExampleSerializer).example()
# {'amount': 391, 'name': '\U00053a6b&\U00030fee$.'}
from_field(serializers.FloatField(min_value=-10, max_value=22)).example()
# -8.499125311228873
For HyperLinkedRelatedField (and variants) you must pass an instantiated serializer as they require access to the request via context:
from hypothesis_drf import from_serializer
class RelatedExample(serializers.ModelSerializer):
class Meta:
model = SourceModel
fields = ('target', )
target = HyperLinkedRelatedField(queryset=TargetModel.objects.all())
from_serializer(RelatedExample(context={'request': request})).example()
# {'target': 'http://example.com/something/'}
Provide hypothesis_strategy
on the field:
from rest_framework import fields
from hypothesis import strategies as st
class MyField(fields.Field):
hypothesis_strategy = st.booleans()
# ...