单元测试 django 序列化程序

Question

I'm trying to unit test serializers but I have an issue in getting the expected error messages when I do serializers.is_valid().

Code:

serializer.py

class RandomSerializer(serializers.Serializer):
    sno = serializers.IntegerField(required=True)
    description = serializers.CharField(required=True)

    def __init__(self, *args, **kwargs):
        super(RandomSerializer, self).__init__(*args, **kwargs)

....

test_serializer.py

def test_random_serializer():
    val_dict = {'sno': 1, 'description':'test'}
    serializer = RandomSerializer(val_dict)

At this point when I check serializer.is_valid(), this evaluates to False and I get the following error when I check serializer.errors

 {u'non_field_errors': [u'No input provided']}

How can I fix this? Any thoughts?

Thanks in advance

PS: I also tried serializer = RandomSerializer(data=val_dict) but this does not even populate values to serializers.data

Answer 1

Edit your test view like this,

def test_random_serializer(): 
    val_dict = {'sno': 1, 'description':'test'} 
    serializer = RandomSerializer(data=val_dict)
    if serializer.is_valid():
        return serializer.data # assertion test here....
    return serializer.errors

Answer 2

When I build a model serializer, I use this way:

class RandomSerializer(serializers.ModelSerializer):
    fields = ('sno', 'description')

I guess defining such a tuple also works in non-model serializers.