'cat OUTPUT && grep -q smiley OUTPUT'
+test_begin_subtest "Search handles subprocess errors"
+cat > notmuch_fail <<EOF
+#!/bin/sh
+echo This is output
+echo This is an error >&2
+exit 1
+EOF
+chmod a+x notmuch_fail
+test_emacs "(let ((notmuch-command \"$PWD/notmuch_fail\"))
+ (with-current-buffer \"*Messages*\" (erase-buffer))
+ (notmuch-search \"tag:inbox\")
+ (notmuch-test-wait)
+ (with-current-buffer \"*Messages*\"
+ (test-output \"MESSAGES\"))
+ (with-current-buffer \"*Notmuch errors*\"
+ (test-output \"ERROR\"))
+ (test-output))"
+sed -i -e 's/^\[.*\]$/[XXX]/' ERROR
+test_expect_equal "$(cat OUTPUT; echo ---; cat MESSAGES; echo ---; cat ERROR)" "\
+Error: Unexpected output from notmuch search:
+This is output
+Error: Unexpected output from notmuch search:
+This is an error
+End of search results.
+---
+$PWD/notmuch_fail exited with status 1 (see *Notmuch errors* for more details)
+---
+[XXX]
+$PWD/notmuch_fail exited with status 1
+command: $PWD/notmuch_fail search --format\=json --format-version\=1 --sort\=newest-first tag\:inbox
+exit status: 1"
+
test_done