Ucr report data tests

[czue]

@nickpell @NoahCarnahan - I wanted to add a new column type to reports and wanted to start with a test and realized that it didn't look like we had any good end-to-end tests for the report data source class (apart from the expanded column ones that noah wrote). Does that sound right to you or did I just miss them?

[NoahCarnahan]

I believe you are correct that we don't have much in the way of end-to-end ucr reports. These look good!
👍 on ✅

[nickpell]

looks like TestReportAggregation provides some limited end-to-end testing of building a data source and querying a report (but not limit or skip)

[czue]

oh cool - missed that since it tests the view and not the data source. might try and reconcile them at some point. ✅