git diff --stat HEAD^ HEAD
'
+test_expect_success 'diff' '
+ git diff HEAD^ HEAD >actual &&
+ grep "Binary files.*differ" actual
+'
+
+test_expect_success 'diff --cached' '
+ git diff --cached HEAD^ >actual &&
+ grep "Binary files.*differ" actual
+'
+
test_expect_success 'hash-object' '
git hash-object large1
'