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# How to test endpoints with decorators
Say we have an the following endpoint in
"genenetwork2/wqflask/wqflask/metadata_edits.py": that interpolates 2
strings:
```
@metadata_edit.route("/<a>/addition/<b>", methods=("POST",))
@edit_admins_access_required
@login_required
def addition(a, b):
return a + b
```
To test it, see:
```
import unittest
import mock
import imp
import wqflask
class TestMetadataEdits(unittest.TestCase):
def setUp(self):
def kill_patches():
mock.patch.stopall()
imp.reload(wqflask.metadata_edits)
self.addCleanup(kill_patches)
mock.patch('wqflask.decorators.login_required',
lambda x: x).start()
mock.patch('wqflask.decorators.edit_admins_access_required',
lambda x: x).start()
imp.reload(wqflask.metadata_edits)
imp.reload(wqflask)
self.app = wqflask.app.test_client()
def test_addition(self):
resp = self.app.post("/datasets/3/addition/2")
self.assertEqual(resp.data, b'32')
```
For an in-depth explanation, read this [post](https://newbedev.com/can-i-patch-a-python-decorator-before-it-wraps-a-function "Can I patch a Python decorator before it wraps a function?")
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