[Bug 8196] diff fifo1 fifo2 always returns 0

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=8196

michael fox <415fox at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED

--- Comment #1 from michael fox <415fox at gmail.com> 2015-07-04 14:52:20 UTC ---
I wanted to work on this but some nice person me to it. :( Confirmed fixed in
master branch. Here's some added tests if anyone wants them.

diff --git a/testsuite/diff.tests b/testsuite/diff.tests
index 6de4648..fdde7cd 100755
--- a/testsuite/diff.tests
+++ b/testsuite/diff.tests
@@ -214,4 +214,35 @@ SKIP=
 # clean up
 rm -rf diff1 diff2

+mkfifo fifo1 fifo2
+echo qwe >fifo1 &
+echo rty >fifo2 &
+testing "diff of two fifos" \
+       "diff -u fifo1 fifo2 | $TRIM_TAB;" \
+"\
+--- fifo1
++++ fifo2
+@@ -1 +1 @@
+-qwe
++rty
+" \
+       "" ""
+SKIP=
+
+echo qwe >fifo1 &
+testing "diff fifo and stdin" \
+       "diff -u fifo1 - | $TRIM_TAB;" \
+"\
+--- fifo1
++++ -
+@@ -1 +1 @@
+-qwe
++rty
+" \
+       "" "rty\n"
+SKIP=
+
+# clean up
+rm -rf fifo1 fifo2
+
 exit $FAILCOUNT

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