1 files changed, 77 insertions, 0 deletions
diff --git a/t/t3422-rebase-incompatible-options.sh b/t/t3422-rebase-incompatible-options.sh
new file mode 100755
index 0000000000..c8234062c6
--- /dev/null
+++ b/t/t3422-rebase-incompatible-options.sh
@@ -0,0 +1,77 @@
+#!/bin/sh
+
+test_description='test if rebase detects and aborts on incompatible options'
+. ./test-lib.sh
+
+test_expect_success 'setup' '
+	test_seq 2 9 >foo &&
+	git add foo &&
+	git commit -m orig &&
+
+	git branch A &&
+	git branch B &&
+
+	git checkout A &&
+	test_seq 1 9 >foo &&
+	git add foo &&
+	git commit -m A &&
+
+	git checkout B &&
+	echo "q qfoo();" | q_to_tab >>foo &&
+	git add foo &&
+	git commit -m B
+'
+
+#
+# Rebase has lots of useful options like --whitepsace=fix, which are
+# actually all built in terms of flags to git-am.  Since neither
+# --merge nor --interactive (nor any options that imply those two) use
+# git-am, using them together will result in flags like --whitespace=fix
+# being ignored.  Make sure rebase warns the user and aborts instead.
+#
+
+test_rebase_am_only () {
+	opt=$1
+	shift
+	test_expect_success "$opt incompatible with --merge" "
+		git checkout B^0 &&
+		test_must_fail git rebase $opt --merge A
+	"
+
+	test_expect_success "$opt incompatible with --strategy=ours" "
+		git checkout B^0 &&
+		test_must_fail git rebase $opt --strategy=ours A
+	"
+
+	test_expect_success "$opt incompatible with --strategy-option=ours" "
+		git checkout B^0 &&
+		test_must_fail git rebase $opt --strategy-option=ours A
+	"
+
+	test_expect_success "$opt incompatible with --interactive" "
+		git checkout B^0 &&
+		test_must_fail git rebase $opt --interactive A
+	"
+
+	test_expect_success "$opt incompatible with --exec" "
+		git checkout B^0 &&
+		test_must_fail git rebase $opt --exec 'true' A
+	"
+
+}
+
+test_rebase_am_only --whitespace=fix
+test_rebase_am_only -C4
+
+test_expect_success REBASE_P '--preserve-merges incompatible with --signoff' '
+	git checkout B^0 &&
+	test_must_fail git rebase --preserve-merges --signoff A
+'
+
+test_expect_success REBASE_P \
+	'--preserve-merges incompatible with --rebase-merges' '
+	git checkout B^0 &&
+	test_must_fail git rebase --preserve-merges --rebase-merges A
+'
+
+test_done