ValueError：Content-Type 标头是“text/html”，而不是“application/json” Django 蟒蛇

Question

我正在尝试对我的视图之一运行测试，但我不断收到此错误 raise ValueError( ValueError: Content-Type header is "text/html", not "application/json"

这是查看函数

def add_to_cart(request):
    cart = Cart(request)
    if request.POST.get("action") == "post":
        product_id = int(request.POST.get("productid"))
        product_qty = int(request.POST.get("productqty"))
        product = get_object_or_404(Product, id=product_id)
        cart.add(product=product, qty=product_qty)
        product_qty = cart.__len__()
        response = JsonResponse({"qty": product_qty})
        return response

这是 URL 路径

from django.urls import path
from . import views
app_name = "cart"

urlpatterns = [
    path("add/", views.add_to_cart, name="add_to_cart"),
]

最后是测试

def test_add_to_cart(self):
        response = self.client.post(reverse('cart:add_to_cart'), {
            "productid": 3,
            "productqty": 1,
            "action":'post',
        }, xhr=True)
        print(response.status_code)
        self.assertTrue(response.json(), {'qty':4})
        response = self.client.post(reverse('cart:add_to_cart'), {
            "productid": 2,
            "productqty": 1,
            "action":'post',
        }, xhr=True)
        self.assertTrue(response.json(), {'qty':3})

Answer 1

实际上一切都工作正常，错误来自我使用的 self.assertTrue ；

我实际上是想使用 self.assertEqual