tests: document cherry-pick behavior in face of conflicts

diff --git a/t/t2030-unresolve-info.sh b/t/t2030-unresolve-info.sh
index 785c8b3fca1707ca0e2290acbf3c6585ea7cb0fd..cb7effe0a3e38eeba92b43682de9be68e677099e 100755 (executable)
--- a/t/t2030-unresolve-info.sh
+++ b/t/t2030-unresolve-info.sh
@@ -36,21 +36,22 @@ prime_resolve_undo () {
        test_must_fail git merge third^0 &&
        echo merge does not leave anything &&
        check_resolve_undo empty &&
-       echo different >file &&
-       git add file &&
+       echo different >fi/le &&
+       git add fi/le &&
        echo resolving records &&
-       check_resolve_undo recorded file initial:file second:file third:file
+       check_resolve_undo recorded fi/le initial:fi/le second:fi/le third:fi/le
 }
 
 test_expect_success setup '
-       test_commit initial file first &&
+       mkdir fi &&
+       test_commit initial fi/le first &&
        git branch side &&
        git branch another &&
-       test_commit second file second &&
+       test_commit second fi/le second &&
        git checkout side &&
-       test_commit third file third &&
+       test_commit third fi/le third &&
        git checkout another &&
-       test_commit fourth file fourth &&
+       test_commit fourth fi/le fourth &&
        git checkout master
 '
 
@@ -59,7 +60,7 @@ test_expect_success 'add records switch clears' '
        test_tick &&
        git commit -m merged &&
        echo committing keeps &&
-       check_resolve_undo kept file initial:file second:file third:file &&
+       check_resolve_undo kept fi/le initial:fi/le second:fi/le third:fi/le &&
        git checkout second^0 &&
        echo switching clears &&
        check_resolve_undo cleared
@@ -70,19 +71,100 @@ test_expect_success 'rm records reset clears' '
        test_tick &&
        git commit -m merged &&
        echo committing keeps &&
-       check_resolve_undo kept file initial:file second:file third:file &&
+       check_resolve_undo kept fi/le initial:fi/le second:fi/le third:fi/le &&
 
        echo merge clears upfront &&
        test_must_fail git merge fourth^0 &&
        check_resolve_undo nuked &&
 
-       git rm -f file &&
+       git rm -f fi/le &&
        echo resolving records &&
-       check_resolve_undo recorded file initial:file HEAD:file fourth:file &&
+       check_resolve_undo recorded fi/le initial:fi/le HEAD:fi/le fourth:fi/le &&
 
        git reset --hard &&
        echo resetting discards &&
        check_resolve_undo discarded
 '
 
+test_expect_success 'plumbing clears' '
+       prime_resolve_undo &&
+       test_tick &&
+       git commit -m merged &&
+       echo committing keeps &&
+       check_resolve_undo kept fi/le initial:fi/le second:fi/le third:fi/le &&
+
+       echo plumbing clear &&
+       git update-index --clear-resolve-undo &&
+       check_resolve_undo cleared
+'
+
+test_expect_success 'add records checkout -m undoes' '
+       prime_resolve_undo &&
+       git diff HEAD &&
+       git checkout --conflict=merge fi/le &&
+       echo checkout used the record and removed it &&
+       check_resolve_undo removed &&
+       echo the index and the work tree is unmerged again &&
+       git diff >actual &&
+       grep "^++<<<<<<<" actual
+'
+
+test_expect_success 'unmerge with plumbing' '
+       prime_resolve_undo &&
+       git update-index --unresolve fi/le &&
+       git ls-files -u >actual &&
+       test $(wc -l <actual) = 3
+'
+
+test_expect_success 'rerere and rerere forget' '
+       mkdir .git/rr-cache &&
+       prime_resolve_undo &&
+       echo record the resolution &&
+       git rerere &&
+       rerere_id=$(cd .git/rr-cache && echo */postimage) &&
+       rerere_id=${rerere_id%/postimage} &&
+       test -f .git/rr-cache/$rerere_id/postimage &&
+       git checkout -m fi/le &&
+       echo resurrect the conflict &&
+       grep "^=======" fi/le &&
+       echo reresolve the conflict &&
+       git rerere &&
+       test "z$(cat fi/le)" = zdifferent &&
+       echo register the resolution again &&
+       git add fi/le &&
+       check_resolve_undo kept fi/le initial:fi/le second:fi/le third:fi/le &&
+       test -z "$(git ls-files -u)" &&
+       git rerere forget fi/le &&
+       ! test -f .git/rr-cache/$rerere_id/postimage &&
+       tr "\0" "\n" <.git/MERGE_RR >actual &&
+       echo "$rerere_id        fi/le" >expect &&
+       test_cmp expect actual
+'
+
+test_expect_success 'rerere and rerere forget (subdirectory)' '
+       rm -fr .git/rr-cache &&
+       mkdir .git/rr-cache &&
+       prime_resolve_undo &&
+       echo record the resolution &&
+       (cd fi && git rerere) &&
+       rerere_id=$(cd .git/rr-cache && echo */postimage) &&
+       rerere_id=${rerere_id%/postimage} &&
+       test -f .git/rr-cache/$rerere_id/postimage &&
+       (cd fi && git checkout -m le) &&
+       echo resurrect the conflict &&
+       grep "^=======" fi/le &&
+       echo reresolve the conflict &&
+       (cd fi && git rerere) &&
+       test "z$(cat fi/le)" = zdifferent &&
+       echo register the resolution again &&
+       (cd fi && git add le) &&
+       check_resolve_undo kept fi/le initial:fi/le second:fi/le third:fi/le &&
+       test -z "$(git ls-files -u)" &&
+       (cd fi && git rerere forget le) &&
+       ! test -f .git/rr-cache/$rerere_id/postimage &&
+       tr "\0" "\n" <.git/MERGE_RR >actual &&
+       echo "$rerere_id        fi/le" >expect &&
+       test_cmp expect actual
+'
+
 test_done