test_cmp expected diff
'
+cat >expected <<EOF
+diff --git a/non-empty b/non-empty
+deleted file mode 100644
+index d95f3ad..0000000
+--- a/non-empty
++++ /dev/null
+@@ -1 +0,0 @@
+-content
+EOF
+test_expect_success 'deleting a non-empty file' '
+ git reset --hard &&
+ echo content >non-empty &&
+ git add non-empty &&
+ git commit -m non-empty &&
+ rm non-empty &&
+ echo y | git add -p non-empty &&
+ git diff --cached >diff &&
+ test_cmp expected diff
+'
+
cat >expected <<EOF
diff --git a/empty b/empty
deleted file mode 100644