snow/wireguard-go
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Author SHA1 Message Date
Josh Bleecher Snyder 3591acba76 device: make test setup more robust 
Picking two free ports to use for a test is difficult.
The free port we selected might no longer be free when we reach
for it a second time.

On my machine, this failure mode led to failures approximately
once per thousand test runs.

Since failures are rare, and threading through and checking for
all possible errors is complicated, fix this with a big hammer:
Retry if either device fails to come up.

Also, if you accidentally pick the same port twice, delightful confusion ensues.
The handshake failures manifest as crypto errors, which look scary.
Again, fix with retries.

To make these retries easier to implement, use testing.T.Cleanup
instead of defer to close devices. This requires Go 1.14.
Update go.mod accordingly. Go 1.13 is no longer supported anyway.

With these fixes, 'go test -race' ran 100,000 times without failure.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
 2021-01-07 14:49:44 +01:00
Sina Siadat bc3f505efa device: get free port when testing 
Signed-off-by: Sina Siadat <siadat@gmail.com>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
 2020-07-31 16:18:53 +02:00
Jason A. Donenfeld db0aa39b76 global: update header comments and modules 
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
 2020-05-02 02:08:26 -06:00
David Crawshaw 1a1c3d0968 tuntest: split out testing package 
This code is useful to other packages writing tests.

Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
 2020-05-02 01:46:42 -06:00
David Crawshaw 540d01e54a device: test packets between two fake devices 
Signed-off-by: David Crawshaw <crawshaw@tailscale.io>
 2019-10-16 11:38:28 +02:00
Matt Layher 8d76ac8cc4 device: use bytes.Equal for equality check, simplify assertEqual 
Signed-off-by: Matt Layher <mdlayher@gmail.com>
 2019-06-04 13:01:52 +02:00
Matt Layher 32912dc778 device, tun: rearrange code and fix device tests 
Signed-off-by: Matt Layher <mdlayher@gmail.com>
 2019-05-29 18:34:55 +02:00
Jason A. Donenfeld 69f0fe67b6 global: begin modularization 2019-03-03 05:00:40 +01:00
Renamed from device_test.go (Browse further)