filters: add calendar test vector

Add a test vector for the builtin "calendar" filter.  Use the filter's
current output as expected output.

My aim is mostly just to run the calendar filter during "make tests",
this vector doesn't necessarily cover the most interesting sections of
its code.  But at least running the filter once on what could be a
common input (a meeting PUBLISH) and checking that its output matches
what was expected should still be better than testing nothing.

Previously, only compiled filters were tested.  Testing the calendar
filter (which is interpreted, not compiled) necessitated two changes:
* Compilation output goes into the project root (filters/test.sh:
  "$here/../"), but the source code to interpret is in the filters/
  subdirectory (filters/test.sh: "$here"/).  The executable to invoke is
  thus in a different location.
* .builds/alpine-edge.yml uses $FILTERS_TEST_PREFIX to wrap filters in
  valgrind, to check that filters written in e.g C don't leak memory.
  But for the calendar filter, that would check that the Awk interpreter
  doesn't leak memory, failing the test for at least gawk, mawk and
  busybox awk.  Thus, a $FILTERS_TEST_BIN_PREFIX variable is introduced,
  which only applies to binary filters.

Signed-off-by: Timon Reinold <tirei+aerc@agon.one>
Acked-by: Robin Jarry <robin@jarry.cc>

3 files changed, 35 insertions, 2 deletions

diff --git a/filters/test.sh b/filters/test.sh
index ea04235a..dc5ac265 100755
--- a/filters/test.sh
+++ b/filters/test.sh
@@ -34,11 +34,15 @@ export AERC_STYLESET=$style
 export AERC_OSC8_URLS=1
 
 for vec in $here/vectors/*.in; do
-	tool=$(basename $vec | sed 's/-.*//')
 	expected=${vec%%.in}.expected
+	tool=$(basename $vec | sed 's/-.*//')
+	tool_bin=$here/../$tool
+	prefix="$FILTERS_TEST_PREFIX $FILTERS_TEST_BIN_PREFIX"
+	# execute source directly (and omit $...BIN_PREFIX) for interpreted filters
+	[ -f $tool_bin ] || { tool_bin=$here/$tool; prefix="$FILTERS_TEST_PREFIX"; }
 	tmp=$(mktemp)
 	status=0
-	$FILTERS_TEST_PREFIX $here/../$tool -f $vec > $tmp || status=$?
+	$prefix $tool_bin < $vec > $tmp || status=$?
 	if [ $status -eq 0 ] && diff -u "$expected" "$tmp"; then
 		echo "ok      $tool < $vec > $tmp"
 	else
diff --git a/filters/vectors/calendar-invite.expected b/filters/vectors/calendar-invite.expected
new file mode 100644
index 00000000..4cd61485
--- /dev/null
+++ b/filters/vectors/calendar-invite.expected
@@ -0,0 +1,14 @@
+
+  This is a meeting PUBLISH
+
+  SUMMARY       Test Event
+  START         2000/01/01 12:30:00 
+  END           2999/12/31 32:30:00 
+  LOCATION      Some Location
+  ORGANIZER     <invalid@example.org>
+  ATTENDEES     
+
+  DETAILED LIST:
+
+A description.
+With multiple lines.
diff --git a/filters/vectors/calendar-invite.in b/filters/vectors/calendar-invite.in
new file mode 100644
index 00000000..ff456750
--- /dev/null
+++ b/filters/vectors/calendar-invite.in
@@ -0,0 +1,15 @@
+BEGIN:VCALENDAR

+VERSION:2.0

+PRODID:-//hacksw/handcal//NONSGML v1.0//EN

+CALSCALE:GREGORIAN

+METHOD:PUBLISH

+BEGIN:VEVENT

+DESCRIPTION:A description.\nWith multiple lines.

+DTEND:29991231T323000Z

+DTSTAMP:19990101T000000Z

+DTSTART:20000101T123000Z

+LOCATION:Some Location

+ORGANIZER:MAILTO:invalid@example.org

+SUMMARY:Test Event

+END:VEVENT

+END:VCALENDAR