67 lines
2.0 KiB
Bash
Executable File
67 lines
2.0 KiB
Bash
Executable File
#!/bin/bash
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if [ $# -ne 1 -o "$1" = "-h" -o "$1" = "--help" ]; then
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echo "Usage: $(basename $0) <start commit>"
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echo
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echo "Example: $(basename $0) master"
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echo
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echo "This tool runs a regression test on every single commit since the"
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echo "start commit, up to the current commit. Use it to make sure no"
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echo "single commit introduces a regression. Can also be used to find out"
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echo "which commit introduces the regression. Bisecting is fine for the"
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echo "latter goal as well and may be faster, but also requires more thinking"
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echo "of the user."
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echo
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echo "The tool stops as soon as a regression was detected."
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echo
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echo "IMPORTANT: the command to test for a regression is"
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echo
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echo " make regressiontest"
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echo
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echo "... so this command must be available."
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echo
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echo "Manual equivalent of this tool would be something like this:"
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echo
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echo " git checkout <current branch>~20"
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echo " make regresssiontest"
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echo " git checkout <current branch>~19"
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echo " make regresssiontest"
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echo " git checkout <current branch>~18"
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echo " make regresssiontest"
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echo " ..."
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exit 1
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fi
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BASE_BRANCH=${1}
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CURRENT_BRANCH=$(git status | awk '/^On branch/ { print $3; exit; }
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/^HEAD detached/ { print $4; exit; }')
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PARENTS=$(git log --oneline --ancestry-path \
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${BASE_BRANCH}..${CURRENT_BRANCH} | wc -l)
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let PARENTS1=${PARENTS}+1
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echo "${PARENTS1} commits to go."
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trap "echo -n \"Current commit is \"
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git log HEAD^..HEAD | head -5 | tail -1" 0
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while [ ${PARENTS} -ge 0 ]; do
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echo "Next: ${CURRENT_BRANCH}~${PARENTS}"
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sleep 3
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# master and master~0 are different. Checking out the latter leads to a
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# detached head state. This is confusing, avoid it.
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if [ ${PARENTS} -eq 0 ]; then
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git checkout ${CURRENT_BRANCH}
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else
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# The normal thing.
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git checkout ${CURRENT_BRANCH}~${PARENTS}
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fi
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make regressiontests || exit 1
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let PARENTS=${PARENTS}-1
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done
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echo "All commits ran regression tests successfully."
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