# HG changeset patch
# User Augie Fackler <augie@google.com>
# Date 2018-03-03 19:44:41
# Node ID 9318babff83bc17b95c5802cf24092617bd25993
# Parent  d3b893ec5f0891b23ad5fef919b3824f83a7f268

tests: prevent enormous output spew in test-lfs-largefiles.t

This test currently fails on Python 3, but in a super-slow way. Adding
this `head` invocation costs us nothing, but will prevent failures in
this area from being super expensive.

Differential Revision: https://phab.mercurial-scm.org/D2600

diff --git a/tests/test-lfs-largefiles.t b/tests/test-lfs-largefiles.t
--- a/tests/test-lfs-largefiles.t
+++ b/tests/test-lfs-largefiles.t
@@ -338,7 +338,10 @@ locally.
 No diffs when comparing merge and p1 that kept p1's changes.  Diff of lfs to
 largefiles no longer operates in standin files.
 
-  $ hg diff -r 2:3
+This `head -n 20` looks dumb (since we expect no output), but if something
+breaks you can get 1048576 lines of +y in the output, which takes a looooooong
+time to print.
+  $ hg diff -r 2:3 | head -n 20
   $ hg diff -r 2:6
   diff -r e989d0fa3764 -r 752e3a0d8488 large.bin
   --- a/large.bin	Thu Jan 01 00:00:00 1970 +0000