Without the recent write deadline introduction, this test fails.
They still do interfere, but the interference is now bound by
the write deadline. Many improvements are possible.
Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
I broke an invariant in 11048b8932 (it was even nicely
documented then).
Also clean up the test a bit from while I was debugging it.
Fixes#84
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
David Crawshaw
Brad Fitzpatrick
Earl Lee