Refactor fuchsia_precache suite in order to reduce testing logic in test.dart and allow for later implementing package:test onto the existing fuchsia_precache tests Part of https://github.com/flutter/flutter/issues/145482
Refactor fuchsia_precache suite in order to reduce testing logic in test.dart and allow for later implementing package:test onto the existing fuchsia_precache tests Part of https://github.com/flutter/flutter/issues/145482