+#!/bin/sh
+#
+# Copyright (c) 2005 Junio C Hamano
+#
+
+test_description='Same rename detection as t4003 but testing diff-raw.
+
+'
+. ./test-lib.sh
+
+test_expect_success \
+ 'prepare reference tree' \
+ 'cat ../../COPYING >COPYING &&
+ echo frotz >rezrov &&
+ git-update-cache --add COPYING rezrov &&
+ tree=$(git-write-tree) &&
+ echo $tree'
+
+test_expect_success \
+ 'prepare work tree' \
+ 'sed -e 's/HOWEVER/However/' <COPYING >COPYING.1 &&
+ sed -e 's/GPL/G.P.L/g' <COPYING >COPYING.2 &&
+ rm -f COPYING &&
+ git-update-cache --add --remove COPYING COPYING.?'
+
+# tree has COPYING and rezrov. work tree has COPYING.1 and COPYING.2,
+# both are slightly edited, and unchanged rezrov. We say COPYING.1
+# and COPYING.2 are based on COPYING, and do not say anything about
+# rezrov.
+
+git-diff-cache -M $tree >current
+
+cat >expected <<\EOF
+:100644 100644 6ff87c4664981e4397625791c8ea3bbb5f2279a3 0603b3238a076dc6c8022aedc6648fa523a17178 COPYING COPYING.1
+:100644 100644 6ff87c4664981e4397625791c8ea3bbb5f2279a3 06c67961bbaed34a127f76d261f4c0bf73eda471 COPYING COPYING.2
+EOF
+
+test_expect_success \
+ 'validate output from rename/copy detection' \
+ 'diff -u current expected'
+
+test_expect_success \
+ 'prepare work tree again' \
+ 'mv COPYING.2 COPYING &&
+ git-update-cache --add --remove COPYING COPYING.1 COPYING.2'
+
+# tree has COPYING and rezrov. work tree has COPYING and COPYING.1,
+# both are slightly edited, and unchanged rezrov. We say COPYING.1
+# is based on COPYING and COPYING is still there, and do not say anything
+# about rezrov.
+
+git-diff-cache -C $tree >current
+cat >expected <<\EOF
+:100644 100644 6ff87c4664981e4397625791c8ea3bbb5f2279a3 0603b3238a076dc6c8022aedc6648fa523a17178 COPYING COPYING.1
+:100644 100644 6ff87c4664981e4397625791c8ea3bbb5f2279a3 06c67961bbaed34a127f76d261f4c0bf73eda471 COPYING COPYING
+EOF
+
+test_expect_success \
+ 'validate output from rename/copy detection' \
+ 'diff -u current expected'
+
+test_expect_success \
+ 'prepare work tree once again' \
+ 'cat ../../COPYING >COPYING &&
+ git-update-cache --add --remove COPYING COPYING.1'
+
+# tree has COPYING and rezrov. work tree has the same COPYING and
+# copy-edited COPYING.1, and unchanged rezrov. We should see
+# unmodified COPYING in the output, so that downstream diff-helper can
+# notice. We should not say anything about rezrov.
+
+git-diff-cache -C $tree >current
+cat >expected <<\EOF
+:100644 100644 6ff87c4664981e4397625791c8ea3bbb5f2279a3 0603b3238a076dc6c8022aedc6648fa523a17178 COPYING COPYING.1
+:100644 100644 6ff87c4664981e4397625791c8ea3bbb5f2279a3 6ff87c4664981e4397625791c8ea3bbb5f2279a3 COPYING COPYING
+EOF
+
+test_expect_success \
+ 'validate output from rename/copy detection' \
+ 'diff -u current expected'
+
+test_done