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277 lines
6.5 KiB
277 lines
6.5 KiB
#!/bin/sh |
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test_description='merge simplification' |
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. ./test-lib.sh |
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note () { |
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git tag "$1" |
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} |
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unnote () { |
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git name-rev --tags --stdin | sed -e "s|$OID_REGEX (tags/\([^)]*\)) |\1 |g" |
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} |
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# |
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# Create a test repo with interesting commit graph: |
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# |
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# A--B----------G--H--I--K--L |
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# \ \ / / |
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# \ \ / / |
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# C------E---F J |
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# \_/ |
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# |
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# The commits are laid out from left-to-right starting with |
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# the root commit A and terminating at the tip commit L. |
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# |
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# There are a few places where we adjust the commit date or |
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# author date to make the --topo-order, --date-order, and |
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# --author-date-order flags produce different output. |
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test_expect_success setup ' |
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echo "Hi there" >file && |
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echo "initial" >lost && |
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git add file lost && |
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test_tick && git commit -m "Initial file and lost" && |
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note A && |
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git branch other-branch && |
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git symbolic-ref HEAD refs/heads/unrelated && |
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git rm -f "*" && |
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echo "Unrelated branch" >side && |
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git add side && |
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test_tick && git commit -m "Side root" && |
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note J && |
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git checkout master && |
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echo "Hello" >file && |
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echo "second" >lost && |
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git add file lost && |
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test_tick && GIT_AUTHOR_DATE=$(($test_tick + 120)) git commit -m "Modified file and lost" && |
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note B && |
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git checkout other-branch && |
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echo "Hello" >file && |
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>lost && |
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git add file lost && |
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test_tick && git commit -m "Modified the file identically" && |
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note C && |
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echo "This is a stupid example" >another-file && |
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git add another-file && |
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test_tick && git commit -m "Add another file" && |
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note D && |
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test_tick && |
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test_must_fail git merge -m "merge" master && |
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>lost && git commit -a -m "merge" && |
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note E && |
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echo "Yet another" >elif && |
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git add elif && |
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test_tick && git commit -m "Irrelevant change" && |
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note F && |
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git checkout master && |
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echo "Yet another" >elif && |
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git add elif && |
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test_tick && git commit -m "Another irrelevant change" && |
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note G && |
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test_tick && git merge -m "merge" other-branch && |
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note H && |
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echo "Final change" >file && |
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test_tick && git commit -a -m "Final change" && |
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note I && |
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git checkout master && |
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test_tick && git merge --allow-unrelated-histories -m "Coolest" unrelated && |
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note K && |
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echo "Immaterial" >elif && |
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git add elif && |
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test_tick && git commit -m "Last" && |
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note L |
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' |
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FMT='tformat:%P %H | %s' |
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check_outcome () { |
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outcome=$1 |
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shift |
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for c in $1 |
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do |
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echo "$c" |
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done >expect && |
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shift && |
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param="$*" && |
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test_expect_$outcome "log $param" ' |
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git log --pretty="$FMT" --parents $param | |
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unnote >actual && |
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sed -e "s/^.* \([^ ]*\) .*/\1/" >check <actual && |
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test_cmp expect check |
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' |
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} |
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check_result () { |
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check_outcome success "$@" |
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} |
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check_result 'L K J I H F E D C G B A' --full-history --topo-order |
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check_result 'L K I H G F E D C B J A' --full-history |
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check_result 'L K I H G F E D C B J A' --full-history --date-order |
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check_result 'L K I H G F E D B C J A' --full-history --author-date-order |
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check_result 'K I H E C B A' --full-history -- file |
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check_result 'K I H E C B A' --full-history --topo-order -- file |
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check_result 'K I H E C B A' --full-history --date-order -- file |
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check_result 'K I H E B C A' --full-history --author-date-order -- file |
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check_result 'I E C B A' --simplify-merges -- file |
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check_result 'I E C B A' --simplify-merges --topo-order -- file |
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check_result 'I E C B A' --simplify-merges --date-order -- file |
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check_result 'I E B C A' --simplify-merges --author-date-order -- file |
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check_result 'I B A' -- file |
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check_result 'I B A' --topo-order -- file |
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check_result 'I B A' --date-order -- file |
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check_result 'I B A' --author-date-order -- file |
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check_result 'H' --first-parent -- another-file |
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check_result 'H' --first-parent --topo-order -- another-file |
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check_result 'E C B A' --full-history E -- lost |
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test_expect_success 'full history simplification without parent' ' |
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printf "%s\n" E C B A >expect && |
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git log --pretty="$FMT" --full-history E -- lost | |
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unnote >actual && |
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sed -e "s/^.* \([^ ]*\) .*/\1/" >check <actual && |
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test_cmp expect check |
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' |
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test_expect_success '--full-diff is not affected by --parents' ' |
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git log -p --pretty="%H" --full-diff -- file >expected && |
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git log -p --pretty="%H" --full-diff --parents -- file >actual && |
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test_cmp expected actual |
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' |
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# |
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# Create a new history to demonstrate the value of --show-pulls |
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# with respect to the subtleties of simplified history, --full-history, |
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# and --simplify-merges. |
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# |
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# .-A---M-----C--N---O---P |
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# / / \ \ \/ / / |
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# I B \ R-'`-Z' / |
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# \ / \/ / |
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# \ / /\ / |
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# `---X--' `---Y--' |
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# |
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# This example is explained in Documentation/rev-list-options.txt |
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test_expect_success 'rebuild repo' ' |
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rm -rf .git * && |
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git init && |
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git switch -c main && |
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echo base >file && |
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git add file && |
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test_commit I && |
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echo A >file && |
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git add file && |
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test_commit A && |
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git switch -c branchB I && |
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echo B >file && |
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git add file && |
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test_commit B && |
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git switch main && |
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test_must_fail git merge -m "M" B && |
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echo A >file && |
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echo B >>file && |
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git add file && |
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git merge --continue && |
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note M && |
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echo C >other && |
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git add other && |
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test_commit C && |
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git switch -c branchX I && |
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echo X >file && |
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git add file && |
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test_commit X && |
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git switch -c branchR M && |
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git merge -m R -Xtheirs X && |
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note R && |
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git switch main && |
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git merge -m N R && |
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note N && |
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git switch -c branchY M && |
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echo Y >y && |
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git add y && |
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test_commit Y && |
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git switch -c branchZ C && |
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echo Z >z && |
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git add z && |
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test_commit Z && |
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git switch main && |
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git merge -m O Z && |
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note O && |
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git merge -m P Y && |
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note P |
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' |
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check_result 'X I' -- file |
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check_result 'N R X I' --show-pulls -- file |
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check_result 'P O N R X M B A I' --full-history --topo-order -- file |
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check_result 'N R X M B A I' --simplify-merges --topo-order --show-pulls -- file |
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check_result 'R X M B A I' --simplify-merges --topo-order -- file |
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check_result 'N M A I' --first-parent -- file |
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check_result 'N M A I' --first-parent --show-pulls -- file |
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# --ancestry-path implies --full-history |
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check_result 'P O N R M' --topo-order \ |
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--ancestry-path A..HEAD -- file |
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check_result 'P O N R M' --topo-order \ |
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--show-pulls \ |
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--ancestry-path A..HEAD -- file |
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check_result 'P O N R M' --topo-order \ |
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--full-history \ |
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--ancestry-path A..HEAD -- file |
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check_result 'R M' --topo-order \ |
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--simplify-merges \ |
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--ancestry-path A..HEAD -- file |
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check_result 'N R M' --topo-order \ |
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--simplify-merges --show-pulls \ |
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--ancestry-path A..HEAD -- file |
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test_expect_success 'log --graph --simplify-merges --show-pulls' ' |
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cat >expect <<-\EOF && |
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* N |
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* R |
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|\ |
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| * X |
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* | M |
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|\ \ |
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| * | B |
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| |/ |
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* / A |
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|/ |
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* I |
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EOF |
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git log --graph --pretty="%s" \ |
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--simplify-merges --show-pulls \ |
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-- file >actual && |
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test_cmp expect actual |
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' |
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test_done
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