End-to-end test for Burndown Chart
The test scenario should cover the creation of a project with a milestone and issues assigned to it (the issues should also have weights) then an assertion that when visiting the milestone page, the chart is displayed.
Additionally, we should test that filtering by issues or issue weight works correctly.
Docs https://docs.gitlab.com/ee/user/project/milestones/burndown_charts.html
Edited by Walmyr Lima e Silva Filho