This appears to be the only test that is using the `doLoadPreferences` mechanism. It looks like this test is verifying that the files in the working set automatically get re-added to the working set. You could add an option to `SpecRunnerUtils.createTestWindowAndRun` (something like options.viewState) that takes an object to be passed to the MemoryStorage when the stateManager is created... that's an easy way for a test to control the initial values on startup.