test

Add new fixture test for edge case #6097

Job	Run time
package	24s
build (windows-py39-unittestextras)	20m 20s
build (windows-py39-pluggy)	6m 36s
build (windows-py39-xdist)	6m 20s
build (windows-py310)	6m 28s
build (windows-py311)	15m 14s
build (windows-py312)	17m 29s
build (windows-py313)	18m 36s
build (ubuntu-py39-lsof-numpy-pexpect)	25m 35s
build (ubuntu-py39-pluggy)	5m 38s
build (ubuntu-py39-freeze)	45s
build (ubuntu-py39-xdist)	5m 23s
build (ubuntu-py310-xdist)	5m 48s
build (ubuntu-py311)	19m 7s
build (ubuntu-py312)	19m 32s
build (ubuntu-py313-pexpect)	17m 32s
build (ubuntu-pypy3-xdist)	7m 52s
build (macos-py39)	5m 48s
build (macos-py310)	4m 52s
build (macos-py312)	3m 54s
build (macos-py313)	4m 7s
build (doctesting)	45s
build (plugins)	52s
check	1s
	3h 38m 58s

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