Migrate preupg/in-pipe from downstream

src/preupg/in-pipe/main.fmf

@@ -0,0 +1,2 @@
+description: running in UNIX pipe
+timeout: 15m

src/preupg/in-pipe/test

@@ -0,0 +1,28 @@
+#!/bin/bash
+
+shellfu import jat_dump
+shellfu import preupg_fupath
+
+jat__pstarts "collect outputs"
+    preupg_fupath RHEL6_7 @pass @failed @informational @not_applicable
+    jat__eval -S 2 -h "run preupg and confirm via non-tty stdin" \
+        "preupg -c RHEL6_7/all-xccdf.xml <<<y >preupg.out 2>preupg.err"
+jat__pend
+
+jat__pstartt "BZ#1231410"       # preupgrade fails if stdin fed from pipe (list index out of range)
+    ERR="preupg: error: list index out of range"
+    jat__cmd -S 1 -h "the known error is not seen: $ERR" \
+        grep "$ERR" preupg.err
+jat__pend
+
+#FIXME: enable after PR#343
+#       https://github.com/upgrades-migrations/preupgrade-assistant/issues/343
+jat__pstartt "BZ#1331416"       # preupg prints error messages when stdin is redirected from pipe
+    ERR="Inappropriate ioctl for device"
+    jat__cmd -S 1 -h "the known error is not seen: $ERR" \
+        grep "$ERR" preupg.err
+jat__pend
+
+jat__pstartd
+    jat_dump__file preupg.out preupg.err
+jat__pend