Add WaitWithTimeout

[k1LoW]

SSIA.

[github-actions]

Code Metrics Report

	main (01137a1)	#2 (79b3ad8)	+/-
Coverage	92.6%	95.1%	+2.5%
Code to Test Ratio	1:3.1	1:2.5	-0.6
Test Execution Time	2s	6s	+4s

Details

  |                     | main (01137a1) | #2 (79b3ad8) |  +/-  |
  |---------------------|----------------|--------------|-------|
+ | Coverage            |          92.6% |        95.1% | +2.5% |
  |   Files             |              1 |            1 |     0 |
  |   Lines             |             27 |           41 |   +14 |
+ |   Covered           |             25 |           39 |   +14 |
- | Code to Test Ratio  |          1:3.1 |        1:2.5 |  -0.6 |
  |   Code              |             56 |           79 |   +23 |
+ |   Test              |            174 |          199 |   +25 |
- | Test Execution Time |             2s |           6s |   +4s |

Code coverage of files in pull request scope (92.6% → 95.1%)

Files	Coverage	+/-
donegroup.go	95.1%	+2.5%

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Reported by octocov