+#!/bin/sh
+
+test_description='difference in submodules'
+
+. ./test-lib.sh
+. ../diff-lib.sh
+
+_z40=0000000000000000000000000000000000000000
+test_expect_success setup '
+ test_tick &&
+ test_create_repo sub &&
+ (
+ cd sub &&
+ echo hello >world &&
+ git add world &&
+ git commit -m submodule
+ ) &&
+
+ test_tick &&
+ echo frotz >nitfol &&
+ git add nitfol sub &&
+ git commit -m superproject &&
+
+ (
+ cd sub &&
+ echo goodbye >world &&
+ git add world &&
+ git commit -m "submodule #2"
+ ) &&
+
+ set x $(
+ cd sub &&
+ git rev-list HEAD
+ ) &&
+ echo ":160000 160000 $3 $_z40 M sub" >expect
+'
+
+test_expect_success 'git diff --raw HEAD' '
+ git diff --raw --abbrev=40 HEAD >actual &&
+ diff -u expect actual
+'
+
+test_expect_success 'git diff-index --raw HEAD' '
+ git diff-index --raw HEAD >actual.index &&
+ diff -u expect actual.index
+'
+
+test_expect_success 'git diff-files --raw' '
+ git diff-files --raw >actual.files &&
+ diff -u expect actual.files
+'
+
+test_done