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Diffstat (limited to 't/t7600-merge.sh')
| -rwxr-xr-x | t/t7600-merge.sh | 1086 |
1 files changed, 1086 insertions, 0 deletions
diff --git a/t/t7600-merge.sh b/t/t7600-merge.sh new file mode 100755 index 0000000..7c3f6ed --- /dev/null +++ b/t/t7600-merge.sh @@ -0,0 +1,1086 @@ +#!/bin/sh +# +# Copyright (c) 2007 Lars Hjemli +# + +test_description='git merge + +Testing basic merge operations/option parsing. + +! [c0] commit 0 + ! [c1] commit 1 + ! [c2] commit 2 + ! [c3] commit 3 + ! [c4] c4 + ! [c5] c5 + ! [c6] c6 + * [main] Merge commit 'c1' +-------- + - [main] Merge commit 'c1' + + * [c1] commit 1 + + [c6] c6 + + [c5] c5 + ++ [c4] c4 + ++++ [c3] commit 3 + + [c2] commit 2 ++++++++* [c0] commit 0 +' + +GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main +export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME + +. ./test-lib.sh +. "$TEST_DIRECTORY"/lib-gpg.sh + +test_write_lines 1 2 3 4 5 6 7 8 9 >file +cp file file.orig +test_write_lines '1 X' 2 3 4 5 6 7 8 9 >file.1 +test_write_lines 1 2 '3 X' 4 5 6 7 8 9 >file.3 +test_write_lines 1 2 3 4 '5 X' 6 7 8 9 >file.5 +test_write_lines 1 2 3 4 5 6 7 8 '9 X' >file.9 +test_write_lines 1 2 3 4 5 6 7 8 '9 Y' >file.9y +test_write_lines '1 X' 2 3 4 5 6 7 8 9 >result.1 +test_write_lines '1 X' 2 3 4 '5 X' 6 7 8 9 >result.1-5 +test_write_lines '1 X' 2 3 4 5 6 7 8 '9 X' >result.1-9 +test_write_lines '1 X' 2 3 4 '5 X' 6 7 8 '9 X' >result.1-5-9 +test_write_lines '1 X' 2 '3 X' 4 '5 X' 6 7 8 '9 X' >result.1-3-5-9 +test_write_lines 1 2 3 4 5 6 7 8 '9 Z' >result.9z + +create_merge_msgs () { + echo "Merge tag 'c2'" >msg.1-5 && + echo "Merge tags 'c2' and 'c3'" >msg.1-5-9 && + { + echo "Squashed commit of the following:" && + echo && + git log --no-merges ^HEAD c1 + } >squash.1 && + { + echo "Squashed commit of the following:" && + echo && + git log --no-merges ^HEAD c2 + } >squash.1-5 && + { + echo "Squashed commit of the following:" && + echo && + git log --no-merges ^HEAD c2 c3 + } >squash.1-5-9 && + { + echo "* tag 'c3':" && + echo " commit 3" + } >msg.log +} + +verify_merge () { + test_cmp "$2" "$1" && + git update-index --refresh && + git diff --exit-code && + if test -n "$3" + then + git show -s --pretty=tformat:%s HEAD >msg.act && + test_cmp "$3" msg.act + fi +} + +verify_head () { + echo "$1" >head.expected && + git rev-parse HEAD >head.actual && + test_cmp head.expected head.actual +} + +verify_parents () { + test_write_lines "$@" >parents.expected && + >parents.actual && + i=1 && + while test $i -le $# + do + git rev-parse HEAD^$i >>parents.actual && + i=$(expr $i + 1) || + return 1 + done && + test_must_fail git rev-parse --verify "HEAD^$i" && + test_cmp parents.expected parents.actual +} + +verify_mergeheads () { + test_write_lines "$@" >mergehead.expected && + while read sha1 rest + do + git rev-parse $sha1 + done <.git/MERGE_HEAD >mergehead.actual && + test_cmp mergehead.expected mergehead.actual +} + +verify_no_mergehead () { + ! test -e .git/MERGE_HEAD +} + +test_expect_success 'setup' ' + git add file && + test_tick && + git commit -m "commit 0" && + git tag c0 && + c0=$(git rev-parse HEAD) && + cp file.1 file && + git add file && + cp file.1 other && + git add other && + test_tick && + git commit -m "commit 1" && + git tag c1 && + c1=$(git rev-parse HEAD) && + git reset --hard "$c0" && + cp file.5 file && + git add file && + test_tick && + git commit -m "commit 2" && + git tag c2 && + c2=$(git rev-parse HEAD) && + git reset --hard "$c0" && + cp file.9y file && + git add file && + test_tick && + git commit -m "commit 7" && + git tag c7 && + git reset --hard "$c0" && + cp file.9 file && + git add file && + test_tick && + git commit -m "commit 3" && + git tag c3 && + c3=$(git rev-parse HEAD) && + git reset --hard "$c0" && + create_merge_msgs +' + +test_debug 'git log --graph --decorate --oneline --all' + +test_expect_success 'test option parsing' ' + test_must_fail git merge -$ c1 && + test_must_fail git merge --no-such c1 && + test_must_fail git merge -s foobar c1 && + test_must_fail git merge -s=foobar c1 && + test_must_fail git merge -m && + test_must_fail git merge --abort foobar && + test_must_fail git merge --abort --quiet && + test_must_fail git merge --continue foobar && + test_must_fail git merge --continue --quiet && + test_must_fail git merge +' + +test_expect_success 'merge -h with invalid index' ' + mkdir broken && + ( + cd broken && + git init && + >.git/index && + test_expect_code 129 git merge -h 2>usage + ) && + test_i18ngrep "[Uu]sage: git merge" broken/usage +' + +test_expect_success 'reject non-strategy with a git-merge-foo name' ' + test_must_fail git merge -s index c1 +' + +test_expect_success 'merge c0 with c1' ' + echo "OBJID HEAD@{0}: merge c1: Fast-forward" >reflog.expected && + + git reset --hard c0 && + git merge c1 && + verify_merge file result.1 && + verify_head "$c1" && + + git reflog -1 >reflog.actual && + sed "s/$_x05[0-9a-f]*/OBJID/g" reflog.actual >reflog.fuzzy && + test_cmp reflog.expected reflog.fuzzy +' + +test_debug 'git log --graph --decorate --oneline --all' + +test_expect_success 'merge c0 with c1 with --ff-only' ' + git reset --hard c0 && + git merge --ff-only c1 && + git merge --ff-only HEAD c0 c1 && + verify_merge file result.1 && + verify_head "$c1" +' + +test_debug 'git log --graph --decorate --oneline --all' + +test_expect_success 'merge from unborn branch' ' + git checkout -f main && + test_might_fail git branch -D kid && + + echo "OBJID HEAD@{0}: initial pull" >reflog.expected && + + git checkout --orphan kid && + test_when_finished "git checkout -f main" && + git rm -fr . && + test_tick && + git merge --ff-only c1 && + verify_merge file result.1 && + verify_head "$c1" && + + git reflog -1 >reflog.actual && + sed "s/$_x05[0-9a-f][0-9a-f]/OBJID/g" reflog.actual >reflog.fuzzy && + test_cmp reflog.expected reflog.fuzzy +' + +test_debug 'git log --graph --decorate --oneline --all' + +test_expect_success 'merge c1 with c2' ' + git reset --hard c1 && + test_tick && + git merge c2 && + verify_merge file result.1-5 msg.1-5 && + verify_parents $c1 $c2 +' + +test_expect_success 'merge --squash c3 with c7' ' + git reset --hard c3 && + test_must_fail git merge --squash c7 && + cat result.9z >file && + git commit --no-edit -a && + + cat >expect <<-EOF && + Squashed commit of the following: + + $(git show -s c7) + + # Conflicts: + # file + EOF + git cat-file commit HEAD >raw && + sed -e "1,/^$/d" raw >actual && + test_cmp expect actual +' + +test_expect_success 'merge --squash --autostash conflict does not attempt to apply autostash' ' + git reset --hard c3 && + >unrelated && + git add unrelated && + test_must_fail git merge --squash c7 --autostash >out 2>err && + ! grep "Applying autostash resulted in conflicts." err && + grep "When finished, apply stashed changes with \`git stash pop\`" out +' + +test_expect_success 'merge c3 with c7 with commit.cleanup = scissors' ' + git config commit.cleanup scissors && + git reset --hard c3 && + test_must_fail git merge c7 && + cat result.9z >file && + git commit --no-edit -a && + + cat >expect <<-\EOF && + Merge tag '"'"'c7'"'"' + + # ------------------------ >8 ------------------------ + # Do not modify or remove the line above. + # Everything below it will be ignored. + # + # Conflicts: + # file + EOF + git cat-file commit HEAD >raw && + sed -e "1,/^$/d" raw >actual && + test_cmp expect actual +' + +test_expect_success 'merge c3 with c7 with --squash commit.cleanup = scissors' ' + git config commit.cleanup scissors && + git reset --hard c3 && + test_must_fail git merge --squash c7 && + cat result.9z >file && + git commit --no-edit -a && + + cat >expect <<-EOF && + Squashed commit of the following: + + $(git show -s c7) + + # ------------------------ >8 ------------------------ + # Do not modify or remove the line above. + # Everything below it will be ignored. + # + # Conflicts: + # file + EOF + git cat-file commit HEAD >raw && + sed -e "1,/^$/d" raw >actual && + test_cmp expect actual +' + +test_debug 'git log --graph --decorate --oneline --all' + +test_expect_success 'merge c1 with c2 and c3' ' + git reset --hard c1 && + test_tick && + git merge c2 c3 && + verify_merge file result.1-5-9 msg.1-5-9 && + verify_parents $c1 $c2 $c3 +' + +test_debug 'git log --graph --decorate --oneline --all' + +test_expect_success 'merges with --ff-only' ' + git reset --hard c1 && + test_tick && + test_must_fail git merge --ff-only c2 && + test_must_fail git merge --ff-only c3 && + test_must_fail git merge --ff-only c2 c3 && + git reset --hard c0 && + git merge c3 && + verify_head $c3 +' + +test_expect_success 'merges with merge.ff=only' ' + git reset --hard c1 && + test_tick && + test_config merge.ff "only" && + test_must_fail git merge c2 && + test_must_fail git merge c3 && + test_must_fail git merge c2 c3 && + git reset --hard c0 && + git merge c3 && + verify_head $c3 +' + +test_expect_success 'merge c0 with c1 (no-commit)' ' + git reset --hard c0 && + git merge --no-commit c1 && + verify_merge file result.1 && + verify_head $c1 +' + +test_debug 'git log --graph --decorate --oneline --all' + +test_expect_success 'merge c1 with c2 (no-commit)' ' + git reset --hard c1 && + git merge --no-commit c2 && + verify_merge file result.1-5 && + verify_head $c1 && + verify_mergeheads $c2 +' + +test_debug 'git log --graph --decorate --oneline --all' + +test_expect_success 'merge c1 with c2 and c3 (no-commit)' ' + git reset --hard c1 && + git merge --no-commit c2 c3 && + verify_merge file result.1-5-9 && + verify_head $c1 && + verify_mergeheads $c2 $c3 +' + +test_debug 'git log --graph --decorate --oneline --all' + +test_expect_success 'merge c0 with c1 (squash)' ' + git reset --hard c0 && + git merge --squash c1 && + verify_merge file result.1 && + verify_head $c0 && + verify_no_mergehead && + test_cmp squash.1 .git/SQUASH_MSG +' + +test_debug 'git log --graph --decorate --oneline --all' + +test_expect_success 'merge c0 with c1 (squash, ff-only)' ' + git reset --hard c0 && + git merge --squash --ff-only c1 && + verify_merge file result.1 && + verify_head $c0 && + verify_no_mergehead && + test_cmp squash.1 .git/SQUASH_MSG +' + +test_debug 'git log --graph --decorate --oneline --all' + +test_expect_success 'merge c1 with c2 (squash)' ' + git reset --hard c1 && + git merge --squash c2 && + verify_merge file result.1-5 && + verify_head $c1 && + verify_no_mergehead && + test_cmp squash.1-5 .git/SQUASH_MSG +' + +test_debug 'git log --graph --decorate --oneline --all' + +test_expect_success 'unsuccessful merge of c1 with c2 (squash, ff-only)' ' + git reset --hard c1 && + test_must_fail git merge --squash --ff-only c2 +' + +test_debug 'git log --graph --decorate --oneline --all' + +test_expect_success 'merge c1 with c2 and c3 (squash)' ' + git reset --hard c1 && + git merge --squash c2 c3 && + verify_merge file result.1-5-9 && + verify_head $c1 && + verify_no_mergehead && + test_cmp squash.1-5-9 .git/SQUASH_MSG +' + +test_debug 'git log --graph --decorate --oneline --all' + +test_expect_success 'merge c1 with c2 (no-commit in config)' ' + git reset --hard c1 && + test_config branch.main.mergeoptions "--no-commit" && + git merge c2 && + verify_merge file result.1-5 && + verify_head $c1 && + verify_mergeheads $c2 +' + +test_debug 'git log --graph --decorate --oneline --all' + +test_expect_success 'merge c1 with c2 (log in config)' ' + git reset --hard c1 && + git merge --log c2 && + git show -s --pretty=tformat:%s%n%b >expect && + + test_config branch.main.mergeoptions "--log" && + git reset --hard c1 && + git merge c2 && + git show -s --pretty=tformat:%s%n%b >actual && + + test_cmp expect actual +' + +test_expect_success 'merge c1 with c2 (log in config gets overridden)' ' + git reset --hard c1 && + git merge c2 && + git show -s --pretty=tformat:%s%n%b >expect && + + test_config branch.main.mergeoptions "--no-log" && + test_config merge.log "true" && + git reset --hard c1 && + git merge c2 && + git show -s --pretty=tformat:%s%n%b >actual && + + test_cmp expect actual +' + +test_expect_success 'merge c1 with c2 (squash in config)' ' + git reset --hard c1 && + test_config branch.main.mergeoptions "--squash" && + git merge c2 && + verify_merge file result.1-5 && + verify_head $c1 && + verify_no_mergehead && + test_cmp squash.1-5 .git/SQUASH_MSG +' + +test_debug 'git log --graph --decorate --oneline --all' + +test_expect_success 'override config option -n with --summary' ' + git reset --hard c1 && + test_config branch.main.mergeoptions "-n" && + test_tick && + git merge --summary c2 >diffstat.txt && + verify_merge file result.1-5 msg.1-5 && + verify_parents $c1 $c2 && + if ! grep "^ file | *2 +-$" diffstat.txt + then + echo "[OOPS] diffstat was not generated with --summary" + false + fi +' + +test_expect_success 'override config option -n with --stat' ' + git reset --hard c1 && + test_config branch.main.mergeoptions "-n" && + test_tick && + git merge --stat c2 >diffstat.txt && + verify_merge file result.1-5 msg.1-5 && + verify_parents $c1 $c2 && + if ! grep "^ file | *2 +-$" diffstat.txt + then + echo "[OOPS] diffstat was not generated with --stat" + false + fi +' + +test_debug 'git log --graph --decorate --oneline --all' + +test_expect_success 'override config option --stat' ' + git reset --hard c1 && + test_config branch.main.mergeoptions "--stat" && + test_tick && + git merge -n c2 >diffstat.txt && + verify_merge file result.1-5 msg.1-5 && + verify_parents $c1 $c2 && + if grep "^ file | *2 +-$" diffstat.txt + then + echo "[OOPS] diffstat was generated" + false + fi +' + +test_debug 'git log --graph --decorate --oneline --all' + +test_expect_success 'merge c1 with c2 (override --no-commit)' ' + git reset --hard c1 && + test_config branch.main.mergeoptions "--no-commit" && + test_tick && + git merge --commit c2 && + verify_merge file result.1-5 msg.1-5 && + verify_parents $c1 $c2 +' + +test_debug 'git log --graph --decorate --oneline --all' + +test_expect_success 'merge c1 with c2 (override --squash)' ' + git reset --hard c1 && + test_config branch.main.mergeoptions "--squash" && + test_tick && + git merge --no-squash c2 && + verify_merge file result.1-5 msg.1-5 && + verify_parents $c1 $c2 +' + +test_debug 'git log --graph --decorate --oneline --all' + +test_expect_success 'merge c0 with c1 (no-ff)' ' + git reset --hard c0 && + test_tick && + git merge --no-ff c1 && + verify_merge file result.1 && + verify_parents $c0 $c1 +' + +test_debug 'git log --graph --decorate --oneline --all' + +test_expect_success 'merge c0 with c1 (merge.ff=false)' ' + git reset --hard c0 && + test_config merge.ff "false" && + test_tick && + git merge c1 && + verify_merge file result.1 && + verify_parents $c0 $c1 +' +test_debug 'git log --graph --decorate --oneline --all' + +test_expect_success 'combine branch.main.mergeoptions with merge.ff' ' + git reset --hard c0 && + test_config branch.main.mergeoptions "--ff" && + test_config merge.ff "false" && + test_tick && + git merge c1 && + verify_merge file result.1 && + verify_parents "$c0" +' + +test_expect_success 'tolerate unknown values for merge.ff' ' + git reset --hard c0 && + test_config merge.ff "something-new" && + test_tick && + git merge c1 2>message && + verify_head "$c1" && + test_must_be_empty message +' + +test_expect_success 'combining --squash and --no-ff is refused' ' + git reset --hard c0 && + test_must_fail git merge --squash --no-ff c1 && + test_must_fail git merge --no-ff --squash c1 +' + +test_expect_success 'combining --squash and --commit is refused' ' + git reset --hard c0 && + test_must_fail git merge --squash --commit c1 && + test_must_fail git merge --commit --squash c1 +' + +test_expect_success 'option --ff-only overwrites --no-ff' ' + git merge --no-ff --ff-only c1 && + test_must_fail git merge --no-ff --ff-only c2 +' + +test_expect_success 'option --no-ff overrides merge.ff=only config' ' + git reset --hard c0 && + test_config merge.ff only && + git merge --no-ff c1 +' + +test_expect_success 'merge c0 with c1 (ff overrides no-ff)' ' + git reset --hard c0 && + test_config branch.main.mergeoptions "--no-ff" && + git merge --ff c1 && + verify_merge file result.1 && + verify_head $c1 +' + +test_expect_success 'merge log message' ' + git reset --hard c0 && + git merge --no-log c2 && + git show -s --pretty=format:%b HEAD >msg.act && + test_must_be_empty msg.act && + + git reset --hard c0 && + test_config branch.main.mergeoptions "--no-ff" && + git merge --no-log c2 && + git show -s --pretty=format:%b HEAD >msg.act && + test_must_be_empty msg.act && + + git merge --log c3 && + git show -s --pretty=format:%b HEAD >msg.act && + test_cmp msg.log msg.act && + + git reset --hard HEAD^ && + test_config merge.log "yes" && + git merge c3 && + git show -s --pretty=format:%b HEAD >msg.act && + test_cmp msg.log msg.act +' + +test_debug 'git log --graph --decorate --oneline --all' + +test_expect_success 'merge c1 with c0, c2, c0, and c1' ' + git reset --hard c1 && + test_tick && + git merge c0 c2 c0 c1 && + verify_merge file result.1-5 && + verify_parents $c1 $c2 +' + +test_debug 'git log --graph --decorate --oneline --all' + +test_expect_success 'merge c1 with c0, c2, c0, and c1' ' + git reset --hard c1 && + test_tick && + git merge c0 c2 c0 c1 && + verify_merge file result.1-5 && + verify_parents $c1 $c2 +' + +test_debug 'git log --graph --decorate --oneline --all' + +test_expect_success 'merge c1 with c1 and c2' ' + git reset --hard c1 && + test_tick && + git merge c1 c2 && + verify_merge file result.1-5 && + verify_parents $c1 $c2 +' + +test_debug 'git log --graph --decorate --oneline --all' + +test_expect_success 'merge fast-forward in a dirty tree' ' + git reset --hard c0 && + mv file file1 && + cat file1 >file && + rm -f file1 && + git merge c2 +' + +test_debug 'git log --graph --decorate --oneline --all' + +test_expect_success 'in-index merge' ' + git reset --hard c0 && + git merge --no-ff -s resolve c1 >out && + test_i18ngrep "Wonderful." out && + verify_parents $c0 $c1 +' + +test_debug 'git log --graph --decorate --oneline --all' + +test_expect_success 'refresh the index before merging' ' + git reset --hard c1 && + cp file file.n && mv -f file.n file && + git merge c3 +' + +test_expect_success 'merge with --autostash' ' + git reset --hard c1 && + git merge-file file file.orig file.9 && + git merge --autostash c2 2>err && + test_i18ngrep "Applied autostash." err && + git show HEAD:file >merge-result && + test_cmp result.1-5 merge-result && + test_cmp result.1-5-9 file +' + +test_expect_success 'merge with merge.autoStash' ' + test_config merge.autoStash true && + git reset --hard c1 && + git merge-file file file.orig file.9 && + git merge c2 2>err && + test_i18ngrep "Applied autostash." err && + git show HEAD:file >merge-result && + test_cmp result.1-5 merge-result && + test_cmp result.1-5-9 file +' + +test_expect_success 'fast-forward merge with --autostash' ' + git reset --hard c0 && + git merge-file file file.orig file.5 && + git merge --autostash c1 2>err && + test_i18ngrep "Applied autostash." err && + test_cmp result.1-5 file +' + +test_expect_success 'failed fast-forward merge with --autostash' ' + git reset --hard c0 && + git merge-file file file.orig file.5 && + cp file.5 other && + test_when_finished "rm other" && + test_must_fail git merge --autostash c1 2>err && + test_i18ngrep "Applied autostash." err && + test_cmp file.5 file +' + +test_expect_success 'octopus merge with --autostash' ' + git reset --hard c1 && + git merge-file file file.orig file.3 && + git merge --autostash c2 c3 2>err && + test_i18ngrep "Applied autostash." err && + git show HEAD:file >merge-result && + test_cmp result.1-5-9 merge-result && + test_cmp result.1-3-5-9 file +' + +test_expect_success 'failed merge (exit 2) with --autostash' ' + git reset --hard c1 && + git merge-file file file.orig file.5 && + test_must_fail git merge -s recursive --autostash c2 c3 2>err && + test_i18ngrep "Applied autostash." err && + test_cmp result.1-5 file +' + +test_expect_success 'conflicted merge with --autostash, --abort restores stash' ' + git reset --hard c3 && + cp file.1 file && + test_must_fail git merge --autostash c7 && + git merge --abort 2>err && + test_i18ngrep "Applied autostash." err && + test_cmp file.1 file +' + +test_expect_success 'completed merge (git commit) with --no-commit and --autostash' ' + git reset --hard c1 && + git merge-file file file.orig file.9 && + git diff >expect && + git merge --no-commit --autostash c2 && + git stash show -p MERGE_AUTOSTASH >actual && + test_cmp expect actual && + git commit 2>err && + test_i18ngrep "Applied autostash." err && + git show HEAD:file >merge-result && + test_cmp result.1-5 merge-result && + test_cmp result.1-5-9 file +' + +test_expect_success 'completed merge (git merge --continue) with --no-commit and --autostash' ' + git reset --hard c1 && + git merge-file file file.orig file.9 && + git diff >expect && + git merge --no-commit --autostash c2 && + git stash show -p MERGE_AUTOSTASH >actual && + test_cmp expect actual && + git merge --continue 2>err && + test_i18ngrep "Applied autostash." err && + git show HEAD:file >merge-result && + test_cmp result.1-5 merge-result && + test_cmp result.1-5-9 file +' + +test_expect_success 'aborted merge (merge --abort) with --no-commit and --autostash' ' + git reset --hard c1 && + git merge-file file file.orig file.9 && + git diff >expect && + git merge --no-commit --autostash c2 && + git stash show -p MERGE_AUTOSTASH >actual && + test_cmp expect actual && + git merge --abort 2>err && + test_i18ngrep "Applied autostash." err && + git diff >actual && + test_cmp expect actual +' + +test_expect_success 'aborted merge (reset --hard) with --no-commit and --autostash' ' + git reset --hard c1 && + git merge-file file file.orig file.9 && + git diff >expect && + git merge --no-commit --autostash c2 && + git stash show -p MERGE_AUTOSTASH >actual && + test_cmp expect actual && + git reset --hard 2>err && + test_i18ngrep "Autostash exists; creating a new stash entry." err && + git diff --exit-code +' + +test_expect_success 'quit merge with --no-commit and --autostash' ' + git reset --hard c1 && + git merge-file file file.orig file.9 && + git diff >expect && + git merge --no-commit --autostash c2 && + git stash show -p MERGE_AUTOSTASH >actual && + test_cmp expect actual && + git diff HEAD >expect && + git merge --quit 2>err && + test_i18ngrep "Autostash exists; creating a new stash entry." err && + git diff HEAD >actual && + test_cmp expect actual +' + +test_expect_success 'merge with conflicted --autostash changes' ' + git reset --hard c1 && + git merge-file file file.orig file.9y && + git diff >expect && + test_when_finished "test_might_fail git stash drop" && + git merge --autostash c3 2>err && + test_i18ngrep "Applying autostash resulted in conflicts." err && + git show HEAD:file >merge-result && + test_cmp result.1-9 merge-result && + git stash show -p >actual && + test_cmp expect actual +' + +cat >expected.branch <<\EOF +Merge branch 'c5-branch' (early part) +EOF +cat >expected.tag <<\EOF +Merge commit 'c5~1' +EOF + +test_expect_success 'merge early part of c2' ' + git reset --hard c3 && + echo c4 >c4.c && + git add c4.c && + git commit -m c4 && + git tag c4 && + echo c5 >c5.c && + git add c5.c && + git commit -m c5 && + git tag c5 && + git reset --hard c3 && + echo c6 >c6.c && + git add c6.c && + git commit -m c6 && + git tag c6 && + git branch -f c5-branch c5 && + git merge c5-branch~1 && + git show -s --pretty=tformat:%s HEAD >actual.branch && + git reset --keep HEAD^ && + git merge c5~1 && + git show -s --pretty=tformat:%s HEAD >actual.tag && + test_cmp expected.branch actual.branch && + test_cmp expected.tag actual.tag +' + +test_debug 'git log --graph --decorate --oneline --all' + +test_expect_success 'merge --no-ff --no-commit && commit' ' + git reset --hard c0 && + git merge --no-ff --no-commit c1 && + EDITOR=: git commit && + verify_parents $c0 $c1 +' + +test_debug 'git log --graph --decorate --oneline --all' + +test_expect_success 'amending no-ff merge commit' ' + EDITOR=: git commit --amend && + verify_parents $c0 $c1 +' + +test_debug 'git log --graph --decorate --oneline --all' + +cat >editor <<\EOF +#!/bin/sh +# Add a new message string that was not in the template +( + echo "Merge work done on the side branch c1" + echo + cat "$1" +) >"$1.tmp" && mv "$1.tmp" "$1" +# strip comments and blank lines from end of message +sed -e '/^#/d' "$1" | sed -e :a -e '/^\n*$/{$d;N;ba' -e '}' >expected +EOF +chmod 755 editor + +test_expect_success 'merge --no-ff --edit' ' + git reset --hard c0 && + EDITOR=./editor git merge --no-ff --edit c1 && + verify_parents $c0 $c1 && + git cat-file commit HEAD >raw && + grep "work done on the side branch" raw && + sed "1,/^$/d" >actual raw && + test_cmp expected actual +' + +test_expect_success 'merge annotated/signed tag w/o tracking' ' + test_when_finished "rm -rf dst; git tag -d anno1" && + git tag -a -m "anno c1" anno1 c1 && + git init dst && + git rev-parse c1 >dst/expect && + ( + # c0 fast-forwards to c1 but because this repository + # is not a "downstream" whose refs/tags follows along + # tag from the "upstream", this pull defaults to --no-ff + cd dst && + git pull .. c0 && + git pull .. anno1 && + git rev-parse HEAD^2 >actual && + test_cmp expect actual + ) +' + +test_expect_success 'merge annotated/signed tag w/ tracking' ' + test_when_finished "rm -rf dst; git tag -d anno1" && + git tag -a -m "anno c1" anno1 c1 && + git init dst && + git rev-parse c1 >dst/expect && + ( + # c0 fast-forwards to c1 and because this repository + # is a "downstream" whose refs/tags follows along + # tag from the "upstream", this pull defaults to --ff + cd dst && + git remote add origin .. && + git pull origin c0 && + git fetch origin && + git merge anno1 && + git rev-parse HEAD >actual && + test_cmp expect actual + ) +' + +test_expect_success GPG 'merge --ff-only tag' ' + git reset --hard c0 && + git commit --allow-empty -m "A newer commit" && + git tag -s -m "A newer commit" signed && + git reset --hard c0 && + + git merge --ff-only signed && + git rev-parse signed^0 >expect && + git rev-parse HEAD >actual && + test_cmp expect actual +' + +test_expect_success GPG 'merge --no-edit tag should skip editor' ' + git reset --hard c0 && + git commit --allow-empty -m "A newer commit" && + git tag -f -s -m "A newer commit" signed && + git reset --hard c0 && + + EDITOR=false git merge --no-edit --no-ff signed && + git rev-parse signed^0 >expect && + git rev-parse HEAD^2 >actual && + test_cmp expect actual +' + +test_expect_success 'set up mod-256 conflict scenario' ' + # 256 near-identical stanzas... + for i in $(test_seq 1 256); do + for j in 1 2 3 4 5; do + echo $i-$j || return 1 + done + done >file && + git add file && + git commit -m base && + + # one side changes the first line of each to "main" + sed s/-1/-main/ file >tmp && + mv tmp file && + git commit -am main && + + # and the other to "side"; merging the two will + # yield 256 separate conflicts + git checkout -b side HEAD^ && + sed s/-1/-side/ file >tmp && + mv tmp file && + git commit -am side +' + +test_expect_success 'merge detects mod-256 conflicts (recursive)' ' + git reset --hard && + test_must_fail git merge -s recursive main +' + +test_expect_success 'merge detects mod-256 conflicts (resolve)' ' + git reset --hard && + test_must_fail git merge -s resolve main +' + +test_expect_success 'merge nothing into void' ' + git init void && + ( + cd void && + git remote add up .. && + git fetch up && + test_must_fail git merge FETCH_HEAD + ) +' + +test_expect_success 'merge can be completed with --continue' ' + git reset --hard c0 && + git merge --no-ff --no-commit c1 && + git merge --continue && + verify_parents $c0 $c1 +' + +write_script .git/FAKE_EDITOR <<EOF +# kill -TERM command added below. +EOF + +test_expect_success EXECKEEPSPID 'killed merge can be completed with --continue' ' + git reset --hard c0 && + ! "$SHELL_PATH" -c '\'' + echo kill -TERM $$ >>.git/FAKE_EDITOR + GIT_EDITOR=.git/FAKE_EDITOR + export GIT_EDITOR + exec git merge --no-ff --edit c1'\'' && + git merge --continue && + verify_parents $c0 $c1 +' + +test_expect_success 'merge --quit' ' + git init merge-quit && + ( + cd merge-quit && + test_commit base && + echo one >>base.t && + git commit -am one && + git branch one && + git checkout base && + echo two >>base.t && + git commit -am two && + test_must_fail git -c rerere.enabled=true merge one && + test_path_is_file .git/MERGE_HEAD && + test_path_is_file .git/MERGE_MODE && + test_path_is_file .git/MERGE_MSG && + git rerere status >rerere.before && + git merge --quit && + test_path_is_missing .git/MERGE_HEAD && + test_path_is_missing .git/MERGE_MODE && + test_path_is_missing .git/MERGE_MSG && + git rerere status >rerere.after && + test_must_be_empty rerere.after && + ! test_cmp rerere.after rerere.before + ) +' + +test_expect_success 'merge suggests matching remote refname' ' + git commit --allow-empty -m not-local && + git update-ref refs/remotes/origin/not-local HEAD && + git reset --hard HEAD^ && + + # This is white-box testing hackery; we happen to know + # that reading packed refs is more picky about the memory + # ownership of strings we pass to for_each_ref() callbacks. + git pack-refs --all --prune && + + test_must_fail git merge not-local 2>stderr && + grep origin/not-local stderr +' + +test_expect_success 'suggested names are not ambiguous' ' + git update-ref refs/heads/origin/not-local HEAD && + test_must_fail git merge not-local 2>stderr && + grep remotes/origin/not-local stderr +' + +test_done |