In chrome, open dev tools > Memory tag, click on "Take heap snapshot". First of all, check that there are not existing leaks affecting the test results clicking on "Take heap snapshot": it should not found any results; if it does, you might want to run the test in incognito mode so it does not load any chrome extensions). Once verified, click the "test" button, go to the memory tab, click "Collect garbage" a couple of times, take another snapshot and verify we don't have any new detached node in memory.