1 files changed, 237 insertions, 0 deletions
diff --git a/t/t3501-revert-cherry-pick.sh b/t/t3501-revert-cherry-pick.sh
new file mode 100755
index 0000000..aeab689
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+++ b/t/t3501-revert-cherry-pick.sh
@@ -0,0 +1,237 @@
+#!/bin/sh
+
+test_description='miscellaneous basic tests for cherry-pick and revert'
+
+GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
+export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
+
+TEST_PASSES_SANITIZE_LEAK=true
+. ./test-lib.sh
+
+test_expect_success setup '
+
+	for l in a b c d e f g h i j k l m n o
+	do
+		echo $l$l$l$l$l$l$l$l$l || return 1
+	done >oops &&
+
+	test_tick &&
+	git add oops &&
+	git commit -m initial &&
+	git tag initial &&
+
+	test_tick &&
+	echo "Add extra line at the end" >>oops &&
+	git commit -a -m added &&
+	git tag added &&
+
+	test_tick &&
+	git mv oops spoo &&
+	git commit -m rename1 &&
+	git tag rename1 &&
+
+	test_tick &&
+	git checkout -b side initial &&
+	git mv oops opos &&
+	git commit -m rename2 &&
+	git tag rename2
+'
+
+test_expect_success 'cherry-pick --nonsense' '
+
+	pos=$(git rev-parse HEAD) &&
+	git diff --exit-code HEAD &&
+	test_must_fail git cherry-pick --nonsense 2>msg &&
+	git diff --exit-code HEAD "$pos" &&
+	test_grep "[Uu]sage:" msg
+'
+
+test_expect_success 'revert --nonsense' '
+
+	pos=$(git rev-parse HEAD) &&
+	git diff --exit-code HEAD &&
+	test_must_fail git revert --nonsense 2>msg &&
+	git diff --exit-code HEAD "$pos" &&
+	test_grep "[Uu]sage:" msg
+'
+
+# the following two test cherry-pick and revert with renames
+#
+# --
+#  + rename2: renames oops to opos
+# +  rename1: renames oops to spoo
+# +  added:   adds extra line to oops
+# ++ initial: has lines in oops
+
+test_expect_success 'cherry-pick after renaming branch' '
+
+	git checkout rename2 &&
+	git cherry-pick added &&
+	test_cmp_rev rename2 HEAD^ &&
+	grep "Add extra line at the end" opos &&
+	git reflog -1 | grep cherry-pick
+
+'
+
+test_expect_success 'revert after renaming branch' '
+
+	git checkout rename1 &&
+	git revert added &&
+	test_cmp_rev rename1 HEAD^ &&
+	test_path_is_file spoo &&
+	test_cmp_rev initial:oops HEAD:spoo &&
+	git reflog -1 | grep revert
+
+'
+
+test_expect_success 'cherry-pick on stat-dirty working tree' '
+	git clone . copy &&
+	(
+		cd copy &&
+		git checkout initial &&
+		test-tool chmtime +40 oops &&
+		git cherry-pick added
+	)
+'
+
+test_expect_success 'revert forbidden on dirty working tree' '
+
+	echo content >extra_file &&
+	git add extra_file &&
+	test_must_fail git revert HEAD 2>errors &&
+	test_grep "your local changes would be overwritten by " errors
+
+'
+
+test_expect_success 'cherry-pick on unborn branch' '
+	git checkout --orphan unborn &&
+	git rm --cached -r . &&
+	rm -rf * &&
+	git cherry-pick initial &&
+	git diff --quiet initial &&
+	test_cmp_rev ! initial HEAD
+'
+
+test_expect_success 'cherry-pick "-" to pick from previous branch' '
+	git checkout unborn &&
+	test_commit to-pick actual content &&
+	git checkout main &&
+	git cherry-pick - &&
+	echo content >expect &&
+	test_cmp expect actual
+'
+
+test_expect_success 'cherry-pick "-" is meaningless without checkout' '
+	test_create_repo afresh &&
+	(
+		cd afresh &&
+		test_commit one &&
+		test_commit two &&
+		test_commit three &&
+		test_must_fail git cherry-pick -
+	)
+'
+
+test_expect_success 'cherry-pick "-" works with arguments' '
+	git checkout -b side-branch &&
+	test_commit change actual change &&
+	git checkout main &&
+	git cherry-pick -s - &&
+	echo "Signed-off-by: C O Mitter <committer@example.com>" >expect &&
+	git cat-file commit HEAD | grep ^Signed-off-by: >signoff &&
+	test_cmp expect signoff &&
+	echo change >expect &&
+	test_cmp expect actual
+'
+
+test_expect_success 'cherry-pick works with dirty renamed file' '
+	test_commit to-rename &&
+	git checkout -b unrelated &&
+	test_commit unrelated &&
+	git checkout @{-1} &&
+	git mv to-rename.t renamed &&
+	test_tick &&
+	git commit -m renamed &&
+	echo modified >renamed &&
+	git cherry-pick refs/heads/unrelated &&
+	test $(git rev-parse :0:renamed) = $(git rev-parse HEAD~2:to-rename.t) &&
+	grep -q "^modified$" renamed
+'
+
+test_expect_success 'advice from failed revert' '
+	test_when_finished "git reset --hard" &&
+	test_commit --no-tag "add dream" dream dream &&
+	dream_oid=$(git rev-parse --short HEAD) &&
+	cat <<-EOF >expected &&
+	error: could not revert $dream_oid... add dream
+	hint: After resolving the conflicts, mark them with
+	hint: "git add/rm <pathspec>", then run
+	hint: "git revert --continue".
+	hint: You can instead skip this commit with "git revert --skip".
+	hint: To abort and get back to the state before "git revert",
+	hint: run "git revert --abort".
+	EOF
+	test_commit --append --no-tag "double-add dream" dream dream &&
+	test_must_fail git revert HEAD^ 2>actual &&
+	test_cmp expected actual
+'
+
+test_expect_subject () {
+	echo "$1" >expect &&
+	git log -1 --pretty=%s >actual &&
+	test_cmp expect actual
+}
+
+test_expect_success 'titles of fresh reverts' '
+	test_commit --no-tag A file1 &&
+	test_commit --no-tag B file1 &&
+	git revert --no-edit HEAD &&
+	test_expect_subject "Revert \"B\"" &&
+	git revert --no-edit HEAD &&
+	test_expect_subject "Reapply \"B\"" &&
+	git revert --no-edit HEAD &&
+	test_expect_subject "Revert \"Reapply \"B\"\""
+'
+
+test_expect_success 'title of legacy double revert' '
+	test_commit --no-tag "Revert \"Revert \"B\"\"" file1 &&
+	git revert --no-edit HEAD &&
+	test_expect_subject "Revert \"Revert \"Revert \"B\"\"\""
+'
+
+test_expect_success 'identification of reverted commit (default)' '
+	test_commit to-ident &&
+	test_when_finished "git reset --hard to-ident" &&
+	git checkout --detach to-ident &&
+	git revert --no-edit HEAD &&
+	git cat-file commit HEAD >actual.raw &&
+	grep "^This reverts " actual.raw >actual &&
+	echo "This reverts commit $(git rev-parse HEAD^)." >expect &&
+	test_cmp expect actual
+'
+
+test_expect_success 'identification of reverted commit (--reference)' '
+	git checkout --detach to-ident &&
+	git revert --reference --no-edit HEAD &&
+	git cat-file commit HEAD >actual.raw &&
+	grep "^This reverts " actual.raw >actual &&
+	echo "This reverts commit $(git show -s --pretty=reference HEAD^)." >expect &&
+	test_cmp expect actual
+'
+
+test_expect_success 'identification of reverted commit (revert.reference)' '
+	git checkout --detach to-ident &&
+	git -c revert.reference=true revert --no-edit HEAD &&
+	git cat-file commit HEAD >actual.raw &&
+	grep "^This reverts " actual.raw >actual &&
+	echo "This reverts commit $(git show -s --pretty=reference HEAD^)." >expect &&
+	test_cmp expect actual
+'
+
+test_expect_success 'cherry-pick is unaware of --reference (for now)' '
+	test_when_finished "git reset --hard" &&
+	test_must_fail git cherry-pick --reference HEAD 2>actual &&
+	grep "^usage: git cherry-pick" actual
+'
+
+test_done