this mechanism works fine with the older dash version prior to the 1.5.x release. so the behavior is new. what I observed is that the tests in test_component.py are doing intensively url navigation in the browser, it basically goes through each sub section of dash docs in a very fast way, at some point, the request will get stuck with status = 'loading', a refresh of the page might solve the issue, but not always the case. the stuck point is always consistent on CircleCI and in a local setup. but not the same in the these two environments: i.e. circleci get stuck with /datatables/callbacks while local run might be /datatables/editable
this looks like a leak or something related to the recent async work
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Describe the bug
This is kind of reproducible with the current dash-docs PR for 1.5.1 upgrade, but we don't have fixed steps to reproduce it each time.
To give a little background about issue. We introduced a new feature/parameter in the
visit_and_snapshot
API, what it does is to detect if window.store exists and makes sure all the callbacks get fired and have aresponseTime
in the queue (refer to https://github.com/plotly/dash/blob/b3b9de9923d82ff1281889b3695d638e95bb1590/dash/testing/dash_page.py#L43-L48)this mechanism works fine with the older dash version prior to the 1.5.x release. so the behavior is new. what I observed is that the tests in test_component.py are doing intensively url navigation in the browser, it basically goes through each sub section of dash docs in a very fast way, at some point, the request will get stuck with status = 'loading', a refresh of the page might solve the issue, but not always the case. the stuck point is always consistent on CircleCI and in a local setup. but not the same in the these two environments: i.e. circleci get stuck with /datatables/callbacks while local run might be /datatables/editable
this looks like a leak or something related to the recent async work
sample of a loading state https://circleci.com/api/v1.1/project/github/plotly/dash-docs/8326/output/106/0?file=true
DEBUG dash.testing.dash_page:dash_page.py:48 status of state rq [{u'status': 200, u'requestTime': 1572637143419, u'uid': u'ba5537d0-617e-8488-94b8-0743ae70833e', u'controllerId': u'chapter.children', u'rejected': False, u'responseTime': 1572637143451}, {u'status': 200, u'requestTime': 1572637143564, u'uid': u'ffd418a2-6583-0b41-68e1-f87978e29b89', u'controllerId': u'datatable-paging.data', u'rejected': False, u'responseTime': 1572637144000}, {u'status': 200, u'requestTime': 1572637143625, u'uid': u'00824a87-cc96-bd10-14e8-47c488901e4f', u'controllerId': u'table-paging-with-graph.data', u'rejected': False, u'responseTime': 1572637144090}, {u'status': u'loading', u'controllerId': u'table-sorting-filtering.data', u'uid': u'2dd02b0a-e358-ac9f-24c1-66289dbd0643', u'requestTime': 1572637143676}, {u'status': u'loading', u'controllerId': u'table-filtering.data', u'uid': u'511a97fc-603d-7a33-49dd-343365d2e978', u'requestTime': 1572637143719}, {u'status': u'loading', u'controllerId': u'table-paging-and-sorting.data', u'uid': u'4680495b-ed49-5470-089c-cc8927d40451', u'requestTime': 1572637143766}, {u'status': u'loading', u'controllerId': u'datatable-paging-page-count.data', u'uid': u'0f143cab-e84b-05bb-befb-05d20eb61c83', u'requestTime': 1572637143824}, {u'status': u'loading', u'controllerId': u'datatable-paging-page-count.page_count', u'uid': u'cdfd9b8e-5619-35d0-a1a3-f4a844dc8f92', u'requestTime': 1572637143872}, {u'status': u'loading', u'controllerId': u'table-multicol-sorting.data', u'uid': u'e086324e-52c1-44ac-aeae-84f308e2508b', u'requestTime': 1572637143918}, {u'status': 200, u'requestTime': 1572637144762, u'uid': u'd85d3baf-7a61-d324-b09a-6c7efc6485c0', u'controllerId': u'table-paging-with-graph-container.children', u'rejected': False, u'responseTime': 1572637145068}]