So we save space writing out empty topologies, which we see more often after #3677. Very small impact overall.
Need to fix up app_client_internal_test.go to use Scope's test/reflect package that understands empty==nil, so now it doesn't need a previous workaround.
Remove a similar workaround in probe_internal_test.go that isn't necessary since it's already using that package.
So we save space writing out empty topologies, which we see more often after #3677. Very small impact overall.
Need to fix up
app_client_internal_test.goto use Scope'stest/reflectpackage that understands empty==nil, so now it doesn't need a previous workaround.Remove a similar workaround in
probe_internal_test.gothat isn't necessary since it's already using that package.