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Diffstat (limited to 't/t7405-submodule-merge.sh')
| -rwxr-xr-x | t/t7405-submodule-merge.sh | 282 |
1 files changed, 282 insertions, 0 deletions
diff --git a/t/t7405-submodule-merge.sh b/t/t7405-submodule-merge.sh new file mode 100755 index 0000000000..0d5b42a25b --- /dev/null +++ b/t/t7405-submodule-merge.sh @@ -0,0 +1,282 @@ +#!/bin/sh + +test_description='merging with submodules' + +. ./test-lib.sh + +# +# history +# +# a --- c +# / \ / +# root X +# \ / \ +# b --- d +# + +test_expect_success setup ' + + mkdir sub && + (cd sub && + git init && + echo original > file && + git add file && + test_tick && + git commit -m sub-root) && + git add sub && + test_tick && + git commit -m root && + + git checkout -b a master && + (cd sub && + echo A > file && + git add file && + test_tick && + git commit -m sub-a) && + git add sub && + test_tick && + git commit -m a && + + git checkout -b b master && + (cd sub && + echo B > file && + git add file && + test_tick && + git commit -m sub-b) && + git add sub && + test_tick && + git commit -m b && + + git checkout -b c a && + git merge -s ours b && + + git checkout -b d b && + git merge -s ours a +' + +# History setup +# +# b +# / \ +# init -- a d +# \ \ / +# g c +# +# a in the main repository records to sub-a in the submodule and +# analogous b and c. d should be automatically found by merging c into +# b in the main repository. +test_expect_success 'setup for merge search' ' + mkdir merge-search && + (cd merge-search && + git init && + mkdir sub && + (cd sub && + git init && + echo "file-a" > file-a && + git add file-a && + git commit -m "sub-a" && + git branch sub-a) && + git commit --allow-empty -m init && + git branch init && + git add sub && + git commit -m "a" && + git branch a && + + git checkout -b b && + (cd sub && + git checkout -b sub-b && + echo "file-b" > file-b && + git add file-b && + git commit -m "sub-b") && + git commit -a -m "b" && + + git checkout -b c a && + (cd sub && + git checkout -b sub-c sub-a && + echo "file-c" > file-c && + git add file-c && + git commit -m "sub-c") && + git commit -a -m "c" && + + git checkout -b d a && + (cd sub && + git checkout -b sub-d sub-b && + git merge sub-c) && + git commit -a -m "d" && + git branch test b && + + git checkout -b g init && + (cd sub && + git checkout -b sub-g sub-c) && + git add sub && + git commit -a -m "g") +' + +test_expect_success 'merge with one side as a fast-forward of the other' ' + (cd merge-search && + git checkout -b test-forward b && + git merge d && + git ls-tree test-forward sub | cut -f1 | cut -f3 -d" " > actual && + (cd sub && + git rev-parse sub-d > ../expect) && + test_cmp actual expect) +' + +test_expect_success 'merging should conflict for non fast-forward' ' + (cd merge-search && + git checkout -b test-nonforward b && + (cd sub && + git rev-parse sub-d > ../expect) && + test_must_fail git merge c 2> actual && + grep $(cat expect) actual > /dev/null && + git reset --hard) +' + +test_expect_success 'merging should fail for ambiguous common parent' ' + (cd merge-search && + git checkout -b test-ambiguous b && + (cd sub && + git checkout -b ambiguous sub-b && + git merge sub-c && + git rev-parse sub-d > ../expect1 && + git rev-parse ambiguous > ../expect2) && + test_must_fail git merge c 2> actual && + grep $(cat expect1) actual > /dev/null && + grep $(cat expect2) actual > /dev/null && + git reset --hard) +' + +# in a situation like this +# +# submodule tree: +# +# sub-a --- sub-b --- sub-d +# +# main tree: +# +# e (sub-a) +# / +# bb (sub-b) +# \ +# f (sub-d) +# +# A merge between e and f should fail because one of the submodule +# commits (sub-a) does not descend from the submodule merge-base (sub-b). +# +test_expect_success 'merging should fail for changes that are backwards' ' + (cd merge-search && + git checkout -b bb a && + (cd sub && + git checkout sub-b) && + git commit -a -m "bb" && + + git checkout -b e bb && + (cd sub && + git checkout sub-a) && + git commit -a -m "e" && + + git checkout -b f bb && + (cd sub && + git checkout sub-d) && + git commit -a -m "f" && + + git checkout -b test-backward e && + test_must_fail git merge f) +' + + +# Check that the conflicting submodule is detected when it is +# in the common ancestor. status should be 'U00...00" +test_expect_success 'git submodule status should display the merge conflict properly with merge base' ' + (cd merge-search && + cat >.gitmodules <<EOF && +[submodule "sub"] + path = sub + url = $TRASH_DIRECTORY/sub +EOF + cat >expect <<EOF && +U0000000000000000000000000000000000000000 sub +EOF + git submodule status > actual && + test_cmp expect actual && + git reset --hard) +' + +# Check that the conflicting submodule is detected when it is +# not in the common ancestor. status should be 'U00...00" +test_expect_success 'git submodule status should display the merge conflict properly without merge-base' ' + (cd merge-search && + git checkout -b test-no-merge-base g && + test_must_fail git merge b && + cat >.gitmodules <<EOF && +[submodule "sub"] + path = sub + url = $TRASH_DIRECTORY/sub +EOF + cat >expect <<EOF && +U0000000000000000000000000000000000000000 sub +EOF + git submodule status > actual && + test_cmp expect actual && + git reset --hard) +' + + +test_expect_success 'merging with a modify/modify conflict between merge bases' ' + git reset --hard HEAD && + git checkout -b test2 c && + git merge d +' + +# canonical criss-cross history in top and submodule +test_expect_success 'setup for recursive merge with submodule' ' + mkdir merge-recursive && + (cd merge-recursive && + git init && + mkdir sub && + (cd sub && + git init && + test_commit a && + git checkout -b sub-b master && + test_commit b && + git checkout -b sub-c master && + test_commit c && + git checkout -b sub-bc sub-b && + git merge sub-c && + git checkout -b sub-cb sub-c && + git merge sub-b && + git checkout master) && + git add sub && + git commit -m a && + git checkout -b top-b master && + (cd sub && git checkout sub-b) && + git add sub && + git commit -m b && + git checkout -b top-c master && + (cd sub && git checkout sub-c) && + git add sub && + git commit -m c && + git checkout -b top-bc top-b && + git merge -s ours --no-commit top-c && + (cd sub && git checkout sub-bc) && + git add sub && + git commit -m bc && + git checkout -b top-cb top-c && + git merge -s ours --no-commit top-b && + (cd sub && git checkout sub-cb) && + git add sub && + git commit -m cb) +' + +# merge should leave submodule unmerged in index +test_expect_success 'recursive merge with submodule' ' + (cd merge-recursive && + test_must_fail git merge top-bc && + echo "160000 $(git rev-parse top-cb:sub) 2 sub" > expect2 && + echo "160000 $(git rev-parse top-bc:sub) 3 sub" > expect3 && + git ls-files -u > actual && + grep "$(cat expect2)" actual > /dev/null && + grep "$(cat expect3)" actual > /dev/null) +' + +test_done |