Add renaming-rebase test.

Signed-off-by: Junio C Hamano <junkio@cox.net>

t/t3402-rebase-merge.sh

@@ -0,0 +1,106 @@
+#!/bin/sh
+#
+# Copyright (c) 2006 Junio C Hamano
+#
+
+test_description='git rebase --merge test'
+
+. ./test-lib.sh
+
+T="A quick brown fox
+jumps over the lazy dog."
+for i in 1 2 3 4 5 6 7 8 9 10
+do
+	echo "$i $T"
+done >original
+
+test_expect_success setup '
+	git add original &&
+	git commit -m"initial" &&
+	git branch side &&
+	echo "11 $T" >>original &&
+	git commit -a -m"master updates a bit." &&
+
+	echo "12 $T" >>original &&
+	git commit -a -m"master updates a bit more." &&
+
+	git checkout side &&
+	(echo "0 $T" ; cat original) >renamed &&
+	git add renamed &&
+	git update-index --force-remove original &&
+	git commit -a -m"side renames and edits." &&
+
+	tr "[a-z]" "[A-Z]" <original >newfile &&
+	git add newfile &&
+	git commit -a -m"side edits further." &&
+
+	tr "[a-m]" "[A-M]" <original >newfile &&
+	rm -f original &&
+	git commit -a -m"side edits once again." &&
+
+	git branch test-rebase side &&
+	git branch test-rebase-pick side &&
+	git branch test-reference-pick side &&
+	git checkout -b test-merge side
+'
+
+test_expect_success 'reference merge' '
+	git merge -s recursive "reference merge" HEAD master
+'
+
+test_expect_success rebase '
+	git checkout test-rebase &&
+	git rebase --merge master
+'
+
+test_expect_success 'merge and rebase should match' '
+	git diff-tree -r test-rebase test-merge >difference &&
+	if test -s difference
+	then
+		cat difference
+		(exit 1)
+	else
+		echo happy
+	fi
+'
+
+test_expect_success 'rebase the other way' '
+	git reset --hard master &&
+	git rebase --merge side
+'
+
+test_expect_success 'merge and rebase should match' '
+	git diff-tree -r test-rebase test-merge >difference &&
+	if test -s difference
+	then
+		cat difference
+		(exit 1)
+	else
+		echo happy
+	fi
+'
+
+test_expect_success 'picking rebase' '
+	git reset --hard side &&
+	git rebase --merge --onto master side^^ &&
+	mb=$(git merge-base master HEAD) &&
+	if test "$mb" = "$(git rev-parse master)"
+	then
+		echo happy
+	else
+		git show-branch
+		(exit 1)
+	fi &&
+	f=$(git diff-tree --name-only HEAD^ HEAD) &&
+	g=$(git diff-tree --name-only HEAD^^ HEAD^) &&
+	case "$f,$g" in
+	newfile,newfile)
+		echo happy ;;
+	*)
+		echo "$f"
+		echo "$g"
+		(exit 1)
+	esac
+'
+
+test_done