notmuch/test/emacs-large-search-buffer
Carl Worth 708c4f46ca emacs: Don't drop error messages from "notmuch search"
With the previous commit, unexpected output before or between search results
would be displayed. However, trailing junk from the "notmuch search" output
would still be silently swallowed.

The most common case for an error message from "notmuch search" would be
an invalid command-line, and in that case, there would be no search results
and the trailing error message would get swallowed.

We fix the process sentinel to check for leftover data and add it to the
final buffer. We also add a test case to ensure this works.
2011-03-10 16:53:46 -08:00

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#!/bin/bash
test_description="Emacs with large search results buffer"
. test-lib.sh
x=xxxxxxxxxx # 10
x=$x$x$x$x$x$x$x$x$x$x # 100
x=$x$x$x$x$x$x$x$x$x # 900
# We generate a long subject here (over 900 bytes) so that the emacs
# search results get large quickly. With 30 such messages we should
# cross several 4kB page boundaries and see the bug.
n=30
for i in $(seq 1 $n); do
# Roughly 100B2 KiB per message. That is, we need two messages in order to
# exceed the typical size of the pipe buffer (4 KiB on commodity systems).
generate_message '[subject]="$x $i of $n"'
done
notmuch new > /dev/null
test_begin_subtest "Ensure that emacs doesn't drop results"
expected="$(notmuch search '*' | sed -e 's/^thread:[0-9a-f]* //' -e 's/;//' -e 's/xx*/[BLOB]/')
End of search results."
output=$(test_emacs '(notmuch-search "*") (notmuch-test-wait) (message (buffer-string))' 2>&1 | sed -e s', *, ,g' -e 's/xxx*/[BLOB]/g')
test_expect_equal "$output" "$expected"
test_begin_subtest "Ensure that emacs doesn't drop error messages"
output=$(test_emacs '(notmuch-search "--this-option-does-not-exist") (notmuch-test-wait) (message (buffer-string))' 2>&1)
test_expect_equal "$output" "Error: Unexpected output from notmuch search:
Unrecognized option: --this-option-does-not-exist
End of search results. (process returned 1)"
test_done