APITestCase self.client.patch() silently ignores bad field names

[ErichBSchulz]

hiya!

not sure if this is a problem or not.

The followings test passes even tho I'm attempting to patch a non-existent field

I've highlighted the line that I think should break it with <<<<<<

(full project, which is mostly a learning exercise is here)

(formatting as 'json' or not did not alter outcome)

class QuestionAPITests(APITestCase):        
    fixtures = ['db_users.json', 'db.json'] 
    url = '/accord/api1/question/'   
       
    def test_single(self):                                                  
        pk = 1                                                              
        url1 = f'{self.url}{pk}/'                                           
        # get question #1                                                   
        response = self.client.get(url1, format='json')                     
        self.assertEqual(response.status_code, 200)                         
        question_data = response.json()                                     
        self.assertEqual(question_data['pk'], pk)                           
        self.assertEqual(question_data['title'], 'Open meeting')            
        self.assertEqual(len(question_data['choices']), 5)                  
        # update question #1                                                
        data = {                                                            
        "made_up_field_not_existing": "Annual GM ",   # <<<<<<<<<<<<<<<<<<<<<                      
        "title": "Annual GM ",                                              
         "url": "https://abc.net.au/comedy",                                
        }                                                                   
        request = self.client.patch(url1, data) #, format='json')           
        self.assertEqual(request.status_code, 200)                          
        # get question #1 again                                             
        response = self.client.get(url1, format='json')                     
        self.assertEqual(response.status_code, 200)                         
        question_data = response.json()                                     
        self.assertEqual(question_data['pk'], pk)                           
        self.assertEqual(question_data['title'], 'Annual GM')               
        self.assertEqual(question_data['url'], 'https://abc.net.au/comedy') 
        # delete question #1                                                
        response = self.client.delete(url1)                                 
        self.assertEqual(response.status_code, 204) # no content            
        # fail to get #1                                                    
        response = self.client.get(url1, format='json')                     
        self.assertEqual(response.status_code, 404) # not fouund!           
                                                                            

these are the serialisers fwiw:

from .models import Meeting, Question, Choice                         
                                                                      
class MeetingSerializer(serializers.ModelSerializer):                 
                                                                      
    class Meta:                                                       
        model = Meeting                                               
        fields = ['pk', 'name', 'url', 'start', 'end']                
        depth = 1                                                     
                                                                      
class ChoiceSerializer(serializers.ModelSerializer):                  
                                                                      
    class Meta:                                                       
        model = Choice                                                
        fields = ['pk', 'delegate', 'question', 'choice', 'notes']    
                                                                      
class QuestionSerializer(serializers.ModelSerializer):                
    choices = ChoiceSerializer(                                       
            #queryset=Choice.objects.all(),                           
            many=True,                                                
            read_only=True,                                           
            allow_null=True)                                          
                                                                      
    class Meta:                                                       
        model = Question                                              
        fields = ['pk',                                               
                'meeting', 'order_code', 'title',                     
                'question_text', 'url', 'choices']