Testing Django Rest Framework with multipart/form-data request

test_upload.py

from django.test import TestCase
from rest_framework.test import APIClient    

class FileUploadTestCase(TestCase):  
    def test_upload(self):
        client = APIClient()
        client.credentials(HTTP_AUTHORIZATION='Token ' + self.token.key)
        
        # or self.client (Django https://docs.djangoproject.com/en/dev/topics/testing/advanced/)
        response = client.post(reverse('upload-file'), {
            "image": open("tests/test.png", "rb"),            
            "name": "test"
        })

        self.assertEqual(200, response.status_code)
        
        

Hi!, this doesn't work!

Hi!, this doesn't work!

It depends on how you declare the serializer (serializers.py). Could you check again?

I have fixed the problem with that:

import io
from django.test import TestCase

class test(TestCase):
    def test_upload_file(self):
        with open('/path/to/file.txt', 'rb') as fp :
            fio  = io.FileIO(fp.fileno())
            fio.name = 'file.txt'
            r = self.client.post('/url/', {'filename': fio, 'extraparameter': 5})
        self.assertEqual(r.headers['Content-Type'], 'application/json')

url.py

from django.conf.urls import url
from . import views

urlpatterns = [
    url(r'/url/$', views.serverside_method, name="serverside_method")
]

Example on the server-side (view.py)

def serverside_method(request):    
    if 'filename' in request.FILES:
        file_request = request.FILES['filename']
        file_size = file_request.size
        file_request_name = file_request.name
        return JsonResponse({'Success': True})
    else:
        return JsonResponse({'Success': False})

from rest_framework.test import APITestCase
from django.test.client import MULTIPART_CONTENT, encode_multipart, BOUNDARY
from django.core.files.base import ContentFile  

class FileUploadTestCase(APITestCase):  
    def test_upload(self):
        document = ContentFile(b"foo", "test.png")
        url = reverse("upload-file")
        response = self.client.post(
            path=url,
            data=encode_multipart(data = dict(image=document, name="test"), boundary=BOUNDARY),
            content_type=MULTIPART_CONTENT,
            HTTP_AUTHORIZATION=f"Token {self.token.key}"
        )

        self.assertEqual(200, response.status_code)
        

@AllStar6581 's response works for me, thanks, more than a year but still effective :)

thanks @AllStar6581 , this is the cleanest of all

Thanks @AllStar6581 lifesaver.

Thanks, @AllStar6581
I was not using encode_multipart and the view received no data.

@AllStar6581 Thank you! I was searching for working solution for 2 days.