We recently ran across a case of flaky tests that were seeding the
math/rand package and using that to generate data. The tests were
flaking on specific random values that were difficult to reproduce. If
the test had been using a helper like this, the flaky cases could have
been reliably reproduced.
Signed-off-by: James Tucker <james@tailscale.com>
We have many function pointers that we replace for the duration of test and
restore it on test completion, add method to do that.
Signed-off-by: Maisem Ali <maisem@tailscale.com>
This updates all source files to use a new standard header for copyright
and license declaration. Notably, copyright no longer includes a date,
and we now use the standard SPDX-License-Identifier header.
This commit was done almost entirely mechanically with perl, and then
some minimal manual fixes.
Updates #6865
Signed-off-by: Will Norris <will@tailscale.com>
James Tucker