t2203: add a test about "diff HEAD" case

Previous attempts to fix ita-related diffs breaks this case. To make sure that does not happen again, add a test to verify the behavior wrt. ita entries when we diff a worktree and a tree. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Nguyễn Thái Ngọc Duy committed May 26, 2018 at 14:08 UTC 8fc8f05cef9b5a60cc7adbd5cd6ed130a89ca4e1
1 file changed +17
t/t2203-add-intent.sh
+17
@@ -245,4 +245,21 @@ test_expect_success 'diff-files/diff-cached shows ita as new/not-new files' '
245 test_cmp expected2 actual2
246 '
247
248 +test_expect_success '"diff HEAD" includes ita as new files' '
249 + git reset --hard &&
250 + echo new >new-ita &&
251 + git add -N new-ita &&
252 + git diff HEAD >actual &&
253 + cat >expected <<-\EOF &&
254 + diff --git a/new-ita b/new-ita
255 + new file mode 100644
256 + index 0000000..3e75765
257 + --- /dev/null
258 + +++ b/new-ita
259 + @@ -0,0 +1 @@
260 + +new
261 + EOF
262 + test_cmp expected actual
263 +'
264 +
265 test_done