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systemd/test/test-execute/exec-standardoutput-truncate.service
Lucas Werkmeister 58b65c6d6d test: fix exec-standardoutput-truncate test
The cmp in ExecStartPost= was actually failing – ExecStartPost= has the
same StandardOutput as the rest of the service, so the output file is
truncated before cmp can compare it with the expected output – but the
test still passed because test_exec_standardoutput_truncate() calls
test(), which only checks the main result, rather than test_service(),
which checks the result of the whole service. Fix the test by merging
the ExecStartPost= into the ExecStart= – the cmp has to be part of the
same command line as the cat so that the file is not truncated between
the two processes.
2021-01-15 20:22:29 +01:00

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[Unit]
Description=Test for StandardOutput=truncate:
[Service]
ExecStartPre=sh -c 'printf "hello\n" > /tmp/test-exec-standardoutput-output'
ExecStartPre=sh -c 'printf "hi\n" > /tmp/test-exec-standardoutput-expected'
StandardInput=data
StandardInputText=hi
StandardOutput=truncate:/tmp/test-exec-standardoutput-output
StandardError=null
ExecStart=sh -c 'cat && cmp /tmp/test-exec-standardoutput-output /tmp/test-exec-standardoutput-expected'
Type=oneshot