测试代码中self.client.post无法正常工作，寻求技术支持

Hey there! Let's walk through some likely issues that could be causing your test to fail, based on the code you shared:

Common Issues to Check #

1. Missing User Authentication #

If your item_edit view requires users to be logged in (which it should, for editing items), your test client isn't authenticated by default. This would cause the POST request to be redirected or rejected, so the item never gets updated.

Fix this by adding a login step before your POST request:

def test_edit_item_view_post(self):
    self.client.force_login(user)  # Authenticate the test client
    # Rest of your code here

2. Incorrect Form Data for Foreign Key Fields #

You're passing the user object directly in the POST data for the chef field, but Django forms expect the primary key value (not the object itself) for foreign key fields. This will trigger form validation failure, so the update won't happen.

Change 'chef': user to 'chef': user.id:

self.client.post(reverse('mysite:item_edit', args=[self.item.id]), {
    'name': 'Ketchup',
    'description': 'Heinz brand',
    'chef': user.id,  # Use the user's ID instead of the object
    'ingredients': ['1']
})

3. Not Validating the Request Response #

Right now, your test jumps straight to checking the database, but it doesn't verify if the POST request was actually successful. If the request failed (e.g., form errors), the database won't update, and your assertion will fail without telling you why.

Add a check for the response status code (usually 302 for a successful redirect after edit):

response = self.client.post(...)
self.assertEqual(response.status_code, 302)  # Confirm redirect on success

4. Not Refreshing the Item from the Database #

If you created self.item in your test's setUp method, the in-memory object won't automatically reflect database changes. Use refresh_from_db() to get the latest data:

self.item.refresh_from_db()
self.assertEqual(self.item.name, 'Ketchup')

Revised Test Code Example #

Putting it all together, your test should look something like this:

user = User.objects.get(id=1)
def test_edit_item_view_post(self):
    self.client.force_login(user)
    
    response = self.client.post(
        reverse('mysite:item_edit', args=[self.item.id]),
        {
            'name': 'Ketchup',
            'description': 'Heinz brand',
            'chef': user.id,
            'ingredients': ['1']
        }
    )
    
    self.assertEqual(response.status_code, 302)
    self.item.refresh_from_db()
    self.assertEqual(self.item.name, 'Ketchup')

If you're still having issues, sharing the corresponding view code would help narrow down the problem further!

内容的提问来源于stack exchange，提问作者Chris