Add metrics widget extension

Miranda Fluhartyrequested to merge
338282-metrics-mr-report-widget into master

What does this MR do and why?

For #338282 (closed), also addresses #244337 and #11945 (closed)

This MR recreates the old generic metrics widget using the new merge request reports framework.

Screenshots or screen recordings

description screenshot
loading Screen_Shot_2022-02-11_at_13.48.56
error Screen_Shot_2022-02-11_at_13.50.14
summary with no changes Screen_Shot_2022-02-15_at_13.31.41
summary with changes Screen_Shot_2022-02-15_at_13.28.14
expanded with changes Screen_Shot_2022-02-15_at_13.28.36
scrolling through changes Screen_Recording_2022-02-11_at_14.18.24

How to set up and validate locally

  1. git checkout 338282-metrics-mr-report-widget
  2. echo "Feature.enable(:refactor_mr_widgets_extensions)" | rails c
  3. set up metrics reports for a project (or clone this test project)
  4. run a pipeline in the project for the default branch that generates a metrics report
  5. run a pipeline for another branch that changes the metrics in the report
  6. open a merge request for that branch
  7. the metrics widget should appear in the merge request

note: the old widget will appear below the new widget, this is expected while we're implementing the new widgets Screen_Shot_2022-02-11_at_14.02.04

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

Edited by Miranda Fluharty

Merge request reports