ingress-nginx-helm/internal/ingress/metric/collectors
Thibault Jamet 27a98f2920
Fix race condition in metric process collector test
There was a goroutine started to log things upon a test that could be
ended at the time `cmd.Wait()` ends.

To solve the problem, when the sub-test ends, ensure we wait until the
command ends when ending the test

The output of `make test` before the fix shows:

```
=== RUN   TestNewUDPLogListener
==================
WARNING: DATA RACE
Read at 0x00c0002a8643 by goroutine 74:
  testing.(*common).logDepth()
      /usr/local/go/src/testing/testing.go:629 +0x132
  testing.(*common).Logf()
      /usr/local/go/src/testing/testing.go:614 +0x90
  k8s.io/ingress-nginx/internal/ingress/metric/collectors.TestProcessCollector.func1.1()
      /go/src/k8s.io/ingress-nginx/internal/ingress/metric/collectors/process_test.go:54 +0x140

Previous write at 0x00c0002a8643 by goroutine 72:
  testing.tRunner.func1()
      /usr/local/go/src/testing/testing.go:856 +0x33e
  testing.tRunner()
      /usr/local/go/src/testing/testing.go:869 +0x17f

Goroutine 74 (running) created at:
  k8s.io/ingress-nginx/internal/ingress/metric/collectors.TestProcessCollector.func1()
      /go/src/k8s.io/ingress-nginx/internal/ingress/metric/collectors/process_test.go:50 +0x218
  testing.tRunner()
      /usr/local/go/src/testing/testing.go:865 +0x163

Goroutine 72 (finished) created at:
  testing.(*T).Run()
      /usr/local/go/src/testing/testing.go:916 +0x699
  testing.runTests.func1()
      /usr/local/go/src/testing/testing.go:1157 +0xa8
  testing.tRunner()
      /usr/local/go/src/testing/testing.go:865 +0x163
  testing.runTests()
      /usr/local/go/src/testing/testing.go:1155 +0x523
  testing.(*M).Run()
      /usr/local/go/src/testing/testing.go:1072 +0x2eb
  main.main()
      _testmain.go:52 +0x222
==================
--- PASS: TestNewUDPLogListener (0.00s)
```

after the patch:

```
=== RUN   TestNewUDPLogListener
--- PASS: TestNewUDPLogListener (0.01s)
```

Change-Id: I8ea246d14f5f80b330be19dd5b8299c6762f6d6b
2019-03-04 21:54:42 +01:00
..
controller.go Fix lint issues 2018-12-05 13:28:28 -03:00
controller_test.go Use authbind to bind privileged ports 2018-08-05 11:18:50 -04:00
main.go Refactor controller metrics interface 2018-07-12 12:46:34 -04:00
nginx_status.go Replace Status port using a socket 2019-02-06 18:00:10 -03:00
nginx_status_test.go Replace Status port using a socket 2019-02-06 18:00:10 -03:00
process.go Fix lint issues 2018-12-05 13:28:28 -03:00
process_test.go Fix race condition in metric process collector test 2019-03-04 21:54:42 +01:00
socket.go Add a flag to make per-host metrics optional 2018-12-21 17:31:54 +00:00
socket_test.go Add a flag to make per-host metrics optional 2018-12-21 17:31:54 +00:00
testutils.go Fix some typos 2018-11-05 22:10:11 +08:00