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| -rwxr-xr-x | t/t6402-merge-rename.sh | 973 |
1 files changed, 973 insertions, 0 deletions
diff --git a/t/t6402-merge-rename.sh b/t/t6402-merge-rename.sh new file mode 100755 index 0000000..772238e --- /dev/null +++ b/t/t6402-merge-rename.sh @@ -0,0 +1,973 @@ +#!/bin/sh + +test_description='Merge-recursive merging renames' +GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main +export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME + +. ./test-lib.sh + +modify () { + sed -e "$1" <"$2" >"$2.x" && + mv "$2.x" "$2" +} + +test_expect_success 'setup' ' + cat >A <<-\EOF && + a aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa + b bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb + c cccccccccccccccccccccccccccccccccccccccccccccccc + d dddddddddddddddddddddddddddddddddddddddddddddddd + e eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee + f ffffffffffffffffffffffffffffffffffffffffffffffff + g gggggggggggggggggggggggggggggggggggggggggggggggg + h hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh + i iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii + j jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj + k kkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk + l llllllllllllllllllllllllllllllllllllllllllllllll + m mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm + n nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn + o oooooooooooooooooooooooooooooooooooooooooooooooo + EOF + + cat >M <<-\EOF && + A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA + B BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB + C CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC + D DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD + E EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE + F FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF + G GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG + H HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH + I IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII + J JJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJ + K KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK + L LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL + M MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM + N NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN + O OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO + EOF + + git add A M && + git commit -m "initial has A and M" && + git branch white && + git branch red && + git branch blue && + git branch yellow && + git branch change && + git branch change+rename && + + sed -e "/^g /s/.*/g : main changes a line/" <A >A+ && + mv A+ A && + git commit -a -m "main updates A" && + + git checkout yellow && + rm -f M && + git commit -a -m "yellow removes M" && + + git checkout white && + sed -e "/^g /s/.*/g : white changes a line/" <A >B && + sed -e "/^G /s/.*/G : colored branch changes a line/" <M >N && + rm -f A M && + git update-index --add --remove A B M N && + git commit -m "white renames A->B, M->N" && + + git checkout red && + sed -e "/^g /s/.*/g : red changes a line/" <A >B && + sed -e "/^G /s/.*/G : colored branch changes a line/" <M >N && + rm -f A M && + git update-index --add --remove A B M N && + git commit -m "red renames A->B, M->N" && + + git checkout blue && + sed -e "/^g /s/.*/g : blue changes a line/" <A >C && + sed -e "/^G /s/.*/G : colored branch changes a line/" <M >N && + rm -f A M && + git update-index --add --remove A C M N && + git commit -m "blue renames A->C, M->N" && + + git checkout change && + sed -e "/^g /s/.*/g : changed line/" <A >A+ && + mv A+ A && + git commit -q -a -m "changed" && + + git checkout change+rename && + sed -e "/^g /s/.*/g : changed line/" <A >B && + rm A && + git update-index --add B && + git commit -q -a -m "changed and renamed" && + + git checkout main +' + +test_expect_success 'pull renaming branch into unrenaming one' \ +' + git show-branch && + test_expect_code 1 git pull --no-rebase . white && + git ls-files -s && + test_stdout_line_count = 3 git ls-files -u B && + test_stdout_line_count = 1 git ls-files -s N && + sed -ne "/^g/{ + p + q + }" B | grep main && + git diff --exit-code white N +' + +test_expect_success 'pull renaming branch into another renaming one' \ +' + rm -f B && + git reset --hard && + git checkout red && + test_expect_code 1 git pull --no-rebase . white && + test_stdout_line_count = 3 git ls-files -u B && + test_stdout_line_count = 1 git ls-files -s N && + sed -ne "/^g/{ + p + q + }" B | grep red && + git diff --exit-code white N +' + +test_expect_success 'pull unrenaming branch into renaming one' \ +' + git reset --hard && + git show-branch && + test_expect_code 1 git pull --no-rebase . main && + test_stdout_line_count = 3 git ls-files -u B && + test_stdout_line_count = 1 git ls-files -s N && + sed -ne "/^g/{ + p + q + }" B | grep red && + git diff --exit-code white N +' + +test_expect_success 'pull conflicting renames' \ +' + git reset --hard && + git show-branch && + test_expect_code 1 git pull --no-rebase . blue && + test_stdout_line_count = 1 git ls-files -u A && + test_stdout_line_count = 1 git ls-files -u B && + test_stdout_line_count = 1 git ls-files -u C && + test_stdout_line_count = 1 git ls-files -s N && + sed -ne "/^g/{ + p + q + }" B | grep red && + git diff --exit-code white N +' + +test_expect_success 'interference with untracked working tree file' ' + git reset --hard && + git show-branch && + echo >A this file should not matter && + test_expect_code 1 git pull --no-rebase . white && + test_path_is_file A +' + +test_expect_success 'interference with untracked working tree file' ' + git reset --hard && + git checkout white && + git show-branch && + rm -f A && + echo >A this file should not matter && + test_expect_code 1 git pull --no-rebase . red && + test_path_is_file A +' + +test_expect_success 'interference with untracked working tree file' ' + git reset --hard && + rm -f A M && + git checkout -f main && + git tag -f anchor && + git show-branch && + git pull --no-rebase . yellow && + test_path_is_missing M && + git reset --hard anchor +' + +test_expect_success 'updated working tree file should prevent the merge' ' + git reset --hard && + rm -f A M && + git checkout -f main && + git tag -f anchor && + git show-branch && + echo >>M one line addition && + cat M >M.saved && + test_expect_code 128 git pull . yellow && + test_cmp M M.saved && + rm -f M.saved +' + +test_expect_success 'updated working tree file should prevent the merge' ' + git reset --hard && + rm -f A M && + git checkout -f main && + git tag -f anchor && + git show-branch && + echo >>M one line addition && + cat M >M.saved && + git update-index M && + test_expect_code 2 git pull --no-rebase . yellow && + test_cmp M M.saved && + rm -f M.saved +' + +test_expect_success 'interference with untracked working tree file' ' + git reset --hard && + rm -f A M && + git checkout -f yellow && + git tag -f anchor && + git show-branch && + echo >M this file should not matter && + git pull --no-rebase . main && + test_path_is_file M && + ! { + git ls-files -s | + grep M + } && + git reset --hard anchor +' + +test_expect_success 'merge of identical changes in a renamed file' ' + rm -f A M N && + git reset --hard && + git checkout change+rename && + + test-tool chmtime --get -3600 B >old-mtime && + GIT_MERGE_VERBOSITY=3 git merge change >out && + + test-tool chmtime --get B >new-mtime && + test_cmp old-mtime new-mtime && + + git reset --hard HEAD^ && + git checkout change && + + # A will be renamed to B; we check mtimes and file presence + test_path_is_missing B && + test-tool chmtime --get -3600 A >old-mtime && + GIT_MERGE_VERBOSITY=3 git merge change+rename >out && + + test_path_is_missing A && + test-tool chmtime --get B >new-mtime && + test $(cat old-mtime) -lt $(cat new-mtime) +' + +test_expect_success 'setup for rename + d/f conflicts' ' + git reset --hard && + git checkout --orphan dir-in-way && + git rm -rf . && + git clean -fdqx && + + mkdir sub && + mkdir dir && + printf "1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n" >sub/file && + echo foo >dir/file-in-the-way && + git add -A && + git commit -m "Common commit" && + + echo 11 >>sub/file && + echo more >>dir/file-in-the-way && + git add -u && + git commit -m "Commit to merge, with dir in the way" && + + git checkout -b dir-not-in-way && + git reset --soft HEAD^ && + git rm -rf dir && + git commit -m "Commit to merge, with dir removed" -- dir sub/file && + + git checkout -b renamed-file-has-no-conflicts dir-in-way~1 && + git rm -rf dir && + git rm sub/file && + printf "1\n2\n3\n4\n5555\n6\n7\n8\n9\n10\n" >dir && + git add dir && + git commit -m "Independent change" && + + git checkout -b renamed-file-has-conflicts dir-in-way~1 && + git rm -rf dir && + git mv sub/file dir && + echo 12 >>dir && + git add dir && + git commit -m "Conflicting change" +' + +test_expect_success 'Rename+D/F conflict; renamed file merges + dir not in way' ' + git reset --hard && + git checkout -q renamed-file-has-no-conflicts^0 && + + git merge --strategy=recursive dir-not-in-way && + + git diff --quiet && + test_path_is_file dir && + test_write_lines 1 2 3 4 5555 6 7 8 9 10 11 >expected && + test_cmp expected dir +' + +test_expect_success 'Rename+D/F conflict; renamed file merges but dir in way' ' + git reset --hard && + rm -rf dir~* && + git checkout -q renamed-file-has-no-conflicts^0 && + test_must_fail git merge --strategy=recursive dir-in-way >output && + + test_i18ngrep "CONFLICT (modify/delete): dir/file-in-the-way" output && + test_i18ngrep "Auto-merging dir" output && + if test "$GIT_TEST_MERGE_ALGORITHM" = ort + then + test_i18ngrep "moving it to dir~HEAD instead" output + else + test_i18ngrep "Adding as dir~HEAD instead" output + fi && + + test_stdout_line_count = 3 git ls-files -u && + test_stdout_line_count = 2 git ls-files -u dir/file-in-the-way && + + test_must_fail git diff --quiet && + test_must_fail git diff --cached --quiet && + + test_path_is_file dir/file-in-the-way && + test_path_is_file dir~HEAD && + test_cmp expected dir~HEAD +' + +test_expect_success 'Same as previous, but merged other way' ' + git reset --hard && + rm -rf dir~* && + git checkout -q dir-in-way^0 && + test_must_fail git merge --strategy=recursive renamed-file-has-no-conflicts >output 2>errors && + + ! grep "error: refusing to lose untracked file at" errors && + test_i18ngrep "CONFLICT (modify/delete): dir/file-in-the-way" output && + test_i18ngrep "Auto-merging dir" output && + if test "$GIT_TEST_MERGE_ALGORITHM" = ort + then + test_i18ngrep "moving it to dir~renamed-file-has-no-conflicts instead" output + else + test_i18ngrep "Adding as dir~renamed-file-has-no-conflicts instead" output + fi && + + test_stdout_line_count = 3 git ls-files -u && + test_stdout_line_count = 2 git ls-files -u dir/file-in-the-way && + + test_must_fail git diff --quiet && + test_must_fail git diff --cached --quiet && + + test_path_is_file dir/file-in-the-way && + test_path_is_file dir~renamed-file-has-no-conflicts && + test_cmp expected dir~renamed-file-has-no-conflicts +' + +test_expect_success 'Rename+D/F conflict; renamed file cannot merge, dir not in way' ' + git reset --hard && + rm -rf dir~* && + git checkout -q renamed-file-has-conflicts^0 && + test_must_fail git merge --strategy=recursive dir-not-in-way && + + test_stdout_line_count = 3 git ls-files -u && + test_stdout_line_count = 3 git ls-files -u dir && + + test_must_fail git diff --quiet && + test_must_fail git diff --cached --quiet && + + test_path_is_file dir && + cat >expected <<-\EOF && + 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 + <<<<<<< HEAD:dir + 12 + ======= + 11 + >>>>>>> dir-not-in-way:sub/file + EOF + test_cmp expected dir +' + +test_expect_success 'Rename+D/F conflict; renamed file cannot merge and dir in the way' ' + modify s/dir-not-in-way/dir-in-way/ expected && + + git reset --hard && + rm -rf dir~* && + git checkout -q renamed-file-has-conflicts^0 && + test_must_fail git merge --strategy=recursive dir-in-way && + + test_stdout_line_count = 5 git ls-files -u && + if test "$GIT_TEST_MERGE_ALGORITHM" = ort + then + test_stdout_line_count = 3 git ls-files -u dir~HEAD + else + git ls-files -u dir >out && + test 3 -eq $(grep -v file-in-the-way out | wc -l) && + rm -f out + fi && + test_stdout_line_count = 2 git ls-files -u dir/file-in-the-way && + + test_must_fail git diff --quiet && + test_must_fail git diff --cached --quiet && + + test_path_is_file dir/file-in-the-way && + test_path_is_file dir~HEAD && + test_cmp expected dir~HEAD +' + +test_expect_success 'Same as previous, but merged other way' ' + git reset --hard && + rm -rf dir~* && + git checkout -q dir-in-way^0 && + test_must_fail git merge --strategy=recursive renamed-file-has-conflicts && + + test_stdout_line_count = 5 git ls-files -u && + if test "$GIT_TEST_MERGE_ALGORITHM" = ort + then + test_stdout_line_count = 3 git ls-files -u dir~renamed-file-has-conflicts + else + git ls-files -u dir >out && + test 3 -eq $(grep -v file-in-the-way out | wc -l) && + rm -f out + fi && + test_stdout_line_count = 2 git ls-files -u dir/file-in-the-way && + + test_must_fail git diff --quiet && + test_must_fail git diff --cached --quiet && + + test_path_is_file dir/file-in-the-way && + test_path_is_file dir~renamed-file-has-conflicts && + cat >expected <<-\EOF && + 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 + <<<<<<< HEAD:sub/file + 11 + ======= + 12 + >>>>>>> renamed-file-has-conflicts:dir + EOF + test_cmp expected dir~renamed-file-has-conflicts +' + +test_expect_success 'setup both rename source and destination involved in D/F conflict' ' + git reset --hard && + git checkout --orphan rename-dest && + git rm -rf . && + git clean -fdqx && + + mkdir one && + echo stuff >one/file && + git add -A && + git commit -m "Common commit" && + + git mv one/file destdir && + git commit -m "Renamed to destdir" && + + git checkout -b source-conflict HEAD~1 && + git rm -rf one && + mkdir destdir && + touch one destdir/foo && + git add -A && + git commit -m "Conflicts in the way" +' + +test_expect_success 'both rename source and destination involved in D/F conflict' ' + git reset --hard && + rm -rf dir~* && + git checkout -q rename-dest^0 && + test_must_fail git merge --strategy=recursive source-conflict && + + if test "$GIT_TEST_MERGE_ALGORITHM" = ort + then + test_stdout_line_count = 2 git ls-files -u + else + test_stdout_line_count = 1 git ls-files -u + fi && + + test_must_fail git diff --quiet && + + test_path_is_file destdir/foo && + test_path_is_file one && + test_path_is_file destdir~HEAD && + test "stuff" = "$(cat destdir~HEAD)" +' + +test_expect_success 'setup pair rename to parent of other (D/F conflicts)' ' + git reset --hard && + git checkout --orphan rename-two && + git rm -rf . && + git clean -fdqx && + + mkdir one && + mkdir two && + echo stuff >one/file && + echo other >two/file && + git add -A && + git commit -m "Common commit" && + + git rm -rf one && + git mv two/file one && + git commit -m "Rename two/file -> one" && + + git checkout -b rename-one HEAD~1 && + git rm -rf two && + git mv one/file two && + rm -r one && + git commit -m "Rename one/file -> two" +' + +if test "$GIT_TEST_MERGE_ALGORITHM" = ort +then + test_expect_success 'pair rename to parent of other (D/F conflicts) w/ untracked dir' ' + git checkout -q rename-one^0 && + mkdir one && + test_must_fail git merge --strategy=recursive rename-two && + + test_stdout_line_count = 4 git ls-files -u && + test_stdout_line_count = 2 git ls-files -u one && + test_stdout_line_count = 2 git ls-files -u two && + + test_must_fail git diff --quiet && + + test 3 -eq $(find . | grep -v .git | wc -l) && + + test_path_is_file one && + test_path_is_file two && + test "other" = $(cat one) && + test "stuff" = $(cat two) + ' +else + test_expect_success 'pair rename to parent of other (D/F conflicts) w/ untracked dir' ' + git checkout -q rename-one^0 && + mkdir one && + test_must_fail git merge --strategy=recursive rename-two && + + test_stdout_line_count = 2 git ls-files -u && + test_stdout_line_count = 1 git ls-files -u one && + test_stdout_line_count = 1 git ls-files -u two && + + test_must_fail git diff --quiet && + + test 4 -eq $(find . | grep -v .git | wc -l) && + + test_path_is_dir one && + test_path_is_file one~rename-two && + test_path_is_file two && + test "other" = $(cat one~rename-two) && + test "stuff" = $(cat two) + ' +fi + +test_expect_success 'pair rename to parent of other (D/F conflicts) w/ clean start' ' + git reset --hard && + git clean -fdqx && + test_must_fail git merge --strategy=recursive rename-two && + + if test "$GIT_TEST_MERGE_ALGORITHM" = ort + then + test_stdout_line_count = 4 git ls-files -u && + test_stdout_line_count = 2 git ls-files -u one && + test_stdout_line_count = 2 git ls-files -u two + else + test_stdout_line_count = 2 git ls-files -u && + test_stdout_line_count = 1 git ls-files -u one && + test_stdout_line_count = 1 git ls-files -u two + fi && + + test_must_fail git diff --quiet && + + test 3 -eq $(find . | grep -v .git | wc -l) && + + test_path_is_file one && + test_path_is_file two && + test "other" = $(cat one) && + test "stuff" = $(cat two) +' + +test_expect_success 'setup rename of one file to two, with directories in the way' ' + git reset --hard && + git checkout --orphan first-rename && + git rm -rf . && + git clean -fdqx && + + echo stuff >original && + git add -A && + git commit -m "Common commit" && + + mkdir two && + >two/file && + git add two/file && + git mv original one && + git commit -m "Put two/file in the way, rename to one" && + + git checkout -b second-rename HEAD~1 && + mkdir one && + >one/file && + git add one/file && + git mv original two && + git commit -m "Put one/file in the way, rename to two" +' + +test_expect_success 'check handling of differently renamed file with D/F conflicts' ' + git checkout -q first-rename^0 && + test_must_fail git merge --strategy=recursive second-rename && + + if test "$GIT_TEST_MERGE_ALGORITHM" = ort + then + test_stdout_line_count = 5 git ls-files -s && + test_stdout_line_count = 3 git ls-files -u && + test_stdout_line_count = 1 git ls-files -u one~HEAD && + test_stdout_line_count = 1 git ls-files -u two~second-rename && + test_stdout_line_count = 1 git ls-files -u original && + test_stdout_line_count = 0 git ls-files -o + else + test_stdout_line_count = 5 git ls-files -s && + test_stdout_line_count = 3 git ls-files -u && + test_stdout_line_count = 1 git ls-files -u one && + test_stdout_line_count = 1 git ls-files -u two && + test_stdout_line_count = 1 git ls-files -u original && + test_stdout_line_count = 2 git ls-files -o + fi && + + test_path_is_file one/file && + test_path_is_file two/file && + test_path_is_file one~HEAD && + test_path_is_file two~second-rename && + test_path_is_missing original +' + +test_expect_success 'setup rename one file to two; directories moving out of the way' ' + git reset --hard && + git checkout --orphan first-rename-redo && + git rm -rf . && + git clean -fdqx && + + echo stuff >original && + mkdir one two && + touch one/file two/file && + git add -A && + git commit -m "Common commit" && + + git rm -rf one && + git mv original one && + git commit -m "Rename to one" && + + git checkout -b second-rename-redo HEAD~1 && + git rm -rf two && + git mv original two && + git commit -m "Rename to two" +' + +test_expect_success 'check handling of differently renamed file with D/F conflicts' ' + git checkout -q first-rename-redo^0 && + test_must_fail git merge --strategy=recursive second-rename-redo && + + test_stdout_line_count = 3 git ls-files -u && + test_stdout_line_count = 1 git ls-files -u one && + test_stdout_line_count = 1 git ls-files -u two && + test_stdout_line_count = 1 git ls-files -u original && + test_stdout_line_count = 0 git ls-files -o && + + test_path_is_file one && + test_path_is_file two && + test_path_is_missing original +' + +test_expect_success 'setup avoid unnecessary update, normal rename' ' + git reset --hard && + git checkout --orphan avoid-unnecessary-update-1 && + git rm -rf . && + git clean -fdqx && + + printf "1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n" >original && + git add -A && + git commit -m "Common commit" && + + git mv original rename && + echo 11 >>rename && + git add -u && + git commit -m "Renamed and modified" && + + git checkout -b merge-branch-1 HEAD~1 && + echo "random content" >random-file && + git add -A && + git commit -m "Random, unrelated changes" +' + +test_expect_success 'avoid unnecessary update, normal rename' ' + git checkout -q avoid-unnecessary-update-1^0 && + test-tool chmtime --get -3600 rename >expect && + git merge merge-branch-1 && + test-tool chmtime --get rename >actual && + test_cmp expect actual # "rename" should have stayed intact +' + +test_expect_success 'setup to test avoiding unnecessary update, with D/F conflict' ' + git reset --hard && + git checkout --orphan avoid-unnecessary-update-2 && + git rm -rf . && + git clean -fdqx && + + mkdir df && + printf "1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n" >df/file && + git add -A && + git commit -m "Common commit" && + + git mv df/file temp && + rm -rf df && + git mv temp df && + echo 11 >>df && + git add -u && + git commit -m "Renamed and modified" && + + git checkout -b merge-branch-2 HEAD~1 && + >unrelated-change && + git add unrelated-change && + git commit -m "Only unrelated changes" +' + +test_expect_success 'avoid unnecessary update, with D/F conflict' ' + git checkout -q avoid-unnecessary-update-2^0 && + test-tool chmtime --get -3600 df >expect && + git merge merge-branch-2 && + test-tool chmtime --get df >actual && + test_cmp expect actual # "df" should have stayed intact +' + +test_expect_success 'setup avoid unnecessary update, dir->(file,nothing)' ' + git rm -rf . && + git clean -fdqx && + rm -rf .git && + git init && + + >irrelevant && + mkdir df && + >df/file && + git add -A && + git commit -mA && + + git checkout -b side && + git rm -rf df && + git commit -mB && + + git checkout main && + git rm -rf df && + echo bla >df && + git add -A && + git commit -m "Add a newfile" +' + +test_expect_success 'avoid unnecessary update, dir->(file,nothing)' ' + git checkout -q main^0 && + test-tool chmtime --get -3600 df >expect && + git merge side && + test-tool chmtime --get df >actual && + test_cmp expect actual # "df" should have stayed intact +' + +test_expect_success 'setup avoid unnecessary update, modify/delete' ' + git rm -rf . && + git clean -fdqx && + rm -rf .git && + git init && + + >irrelevant && + >file && + git add -A && + git commit -mA && + + git checkout -b side && + git rm -f file && + git commit -m "Delete file" && + + git checkout main && + echo bla >file && + git add -A && + git commit -m "Modify file" +' + +test_expect_success 'avoid unnecessary update, modify/delete' ' + git checkout -q main^0 && + test-tool chmtime --get -3600 file >expect && + test_must_fail git merge side && + test-tool chmtime --get file >actual && + test_cmp expect actual # "file" should have stayed intact +' + +test_expect_success 'setup avoid unnecessary update, rename/add-dest' ' + git rm -rf . && + git clean -fdqx && + rm -rf .git && + git init && + + printf "1\n2\n3\n4\n5\n6\n7\n8\n" >file && + git add -A && + git commit -mA && + + git checkout -b side && + cp file newfile && + git add -A && + git commit -m "Add file copy" && + + git checkout main && + git mv file newfile && + git commit -m "Rename file" +' + +test_expect_success 'avoid unnecessary update, rename/add-dest' ' + git checkout -q main^0 && + test-tool chmtime --get -3600 newfile >expect && + git merge side && + test-tool chmtime --get newfile >actual && + test_cmp expect actual # "file" should have stayed intact +' + +test_expect_success 'setup merge of rename + small change' ' + git reset --hard && + git checkout --orphan rename-plus-small-change && + git rm -rf . && + git clean -fdqx && + + echo ORIGINAL >file && + git add file && + + test_tick && + git commit -m Initial && + git checkout -b rename_branch && + git mv file renamed_file && + git commit -m Rename && + git checkout rename-plus-small-change && + echo NEW-VERSION >file && + git commit -a -m Reformat +' + +test_expect_success 'merge rename + small change' ' + git merge rename_branch && + + test_stdout_line_count = 1 git ls-files -s && + test_stdout_line_count = 0 git ls-files -o && + newhash=$(git rev-parse HEAD:renamed_file) && + oldhash=$(git rev-parse HEAD~1:file) && + test $newhash = $oldhash +' + +test_expect_success 'setup for use of extended merge markers' ' + git rm -rf . && + git clean -fdqx && + rm -rf .git && + git init && + + printf "1\n2\n3\n4\n5\n6\n7\n8\n" >original_file && + git add original_file && + git commit -mA && + + git checkout -b rename && + echo 9 >>original_file && + git add original_file && + git mv original_file renamed_file && + git commit -mB && + + git checkout main && + echo 8.5 >>original_file && + git add original_file && + git commit -mC +' + +test_expect_success 'merge main into rename has correct extended markers' ' + git checkout rename^0 && + test_must_fail git merge -s recursive main^0 && + + cat >expected <<-\EOF && + 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + <<<<<<< HEAD:renamed_file + 9 + ======= + 8.5 + >>>>>>> main^0:original_file + EOF + test_cmp expected renamed_file +' + +test_expect_success 'merge rename into main has correct extended markers' ' + git reset --hard && + git checkout main^0 && + test_must_fail git merge -s recursive rename^0 && + + cat >expected <<-\EOF && + 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + <<<<<<< HEAD:original_file + 8.5 + ======= + 9 + >>>>>>> rename^0:renamed_file + EOF + test_cmp expected renamed_file +' + +test_expect_success 'setup spurious "refusing to lose untracked" message' ' + git rm -rf . && + git clean -fdqx && + rm -rf .git && + git init && + + > irrelevant_file && + printf "1\n2\n3\n4\n5\n6\n7\n8\n" >original_file && + git add irrelevant_file original_file && + git commit -mA && + + git checkout -b rename && + git mv original_file renamed_file && + git commit -mB && + + git checkout main && + git rm original_file && + git commit -mC +' + +test_expect_success 'no spurious "refusing to lose untracked" message' ' + git checkout main^0 && + test_must_fail git merge rename^0 2>errors.txt && + ! grep "refusing to lose untracked file" errors.txt +' + +test_expect_success 'do not follow renames for empty files' ' + git checkout -f -b empty-base && + >empty1 && + git add empty1 && + git commit -m base && + echo content >empty1 && + git add empty1 && + git commit -m fill && + git checkout -b empty-topic HEAD^ && + git mv empty1 empty2 && + git commit -m rename && + test_must_fail git merge empty-base && + test_must_be_empty empty2 +' + +test_done |