test: investigate flaky test-child-process-send-returns-boolean

[refack]

• Version: b24e269
• Platform: Windows
• Subsystem: test,child_process

https://ci.nodejs.org/job/node-test-binary-windows/10905/RUN_SUBSET=0,VS_VERSION=vs2015-x86,label=win2008r2

not ok 46 parallel/test-child-process-send-returns-boolean
  ---
  duration_ms: 0.501
  severity: fail
  stack: |-
    events.js:182
          throw er; // Unhandled 'error' event
          ^
    
    Error: write EMFILE
        at _errnoException (util.js:1027:13)
        at ChildProcess.target._send (internal/child_process.js:721:20)
        at ChildProcess.<anonymous> (internal/child_process.js:550:16)
        at emitTwo (events.js:125:13)
        at ChildProcess.emit (events.js:213:7)
        at emit (internal/child_process.js:791:12)
        at _combinedTickCallback (internal/process/next_tick.js:141:11)
        at process._tickCallback (internal/process/next_tick.js:180:9)
  ...

[refack]

Try-to-trigger-CI: https://ci.nodejs.org/job/node-stress-single-test/1401/nodes=win2008r2/

[targos]

@refack: Not building v9 on Windows 2008R2 with VS2013 as it is only supported up to v5.x

[refack]

@refack: Not building v9 on Windows 2008R2 with VS2013 as it is only supported up to v5.x

😢

I'll try again

[refack]

Try-to-trigger-CI: https://ci.nodejs.org/job/node-stress-single-test/1402/nodes=win-vs2015/

[refack]

The test uses the empty.js fixture to run as a subprocess. If it exits too soon, we get EMFILE.

19   OK: 19   NOT OK: 0   TOTAL: 100
TAP version 13
1..6
ok 1 parallel/test-child-process-send-after-close
  ---
  duration_ms: 0.623
  ...
ok 2 parallel/test-child-process-send-cb
  ---
  duration_ms: 0.625
  ...
ok 3 parallel/test-child-process-send-keep-open
  ---
  duration_ms: 0.624
  ...
ok 4 parallel/test-child-process-send-type-error
  ---
  duration_ms: 0.621
  ...
not ok 5 parallel/test-child-process-send-returns-boolean
  ---
  duration_ms: 0.624
  severity: fail
  stack: |-
    events.js:182
          throw er; // Unhandled 'error' event
          ^
    
    Error: write EMFILE
        at _errnoException (util.js:1027:13)
        at ChildProcess.target._send (internal/child_process.js:721:20)
        at ChildProcess.<anonymous> (internal/child_process.js:550:16)
        at emitTwo (events.js:125:13)
        at ChildProcess.emit (events.js:213:7)
        at emit (internal/child_process.js:791:12)
        at _combinedTickCallback (internal/process/next_tick.js:141:11)
        at process._tickCallback (internal/process/next_tick.js:180:9)
  ...
ok 6 parallel/test-child-process-send-utf8
  ---
  duration_ms: 0.624
  ...
20   OK: 19   NOT OK: 1   TOTAL: 100

PR in the works