Refactor website tests [ongoing]

[merrielle]

This task is to keep track of all the tests that need to be added or updated in CENACS in an effort to burn down technical debt. I don't expect this will be complete by the end of the WTT90s milestone but instead it should be an ongoing process until we are completely caught up.

Kamilah

• collapsible text
• dashboard test (just check that existing tests pass)
• dashboard slice - mostly done, needs update filter function
• all graphs that have "format data"
  • focus on the format data functions since they're isolated
  • investigate an apollo testing guide to see if it's easy to test the useQuery part
  • generation pie
  • generation bar
  • generation stacked line
  • curtailment line
• util
  • sortByTimestamp
  • sortByResourceType
  • increaseUnitSize
• docker - investigate and see if testing is worth the time investment

Merrielle

• header
• select
• graphColumn
• scenario toolbar
• scrollytelling
• bokehGraph (waiting on merge from S Dan: https://github.com/Breakthrough-Energy/CENACS/pull/80)
• graphWrapper