fix: test_trimmer on macOs and Solaris

The 'wc' tool on BSD based system adds leading spaces to it's output,
which breaks the quoted compare. Use bash parameter expansion to trim all
spaces from the 'num_events' variable.

Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
Change-Id: I15aef8c6987e40bcb018f32c7c094eabbc3d83c3
Reviewed-on: https://review.lttng.org/c/babeltrace/+/1476
Reviewed-by: Simon Marchi <simon.marchi@efficios.com>
Reviewed-by: Philippe Proulx <eeppeliteloop@gmail.com>
Tested-by: jenkins <jenkins@lttng.org>

diff --git a/tests/cli/test_trimmer.in b/tests/cli/test_trimmer.in
index 6918cdad10c33b32cee8c2482a8c29b2f8ab2dbc..8c853aeaa0a7a12f5f089aec45d355a54eabb227 100644 (file)
--- a/tests/cli/test_trimmer.in
+++ b/tests/cli/test_trimmer.in
@@ -44,7 +44,8 @@ function expect_success()
        "${BT_BIN}" "${TRACE_PATH}" "$@" 2>/dev/null > "${tmp_out}"
        ok $? "trimmer: ${msg}: exit status"
        num_events=$(wc -l < "${tmp_out}")
-       is "${num_events}" "${expected_num_events}" "trimmer: ${msg}: number of events (${expected_num_events})"
+       # Use bash parameter expansion to strip spaces added by BSD 'wc' on macOs and Solaris
+       is "${num_events// /}" "${expected_num_events}" "trimmer: ${msg}: number of events (${expected_num_events})"
 }
 
 expect_success 18 "--begin, GMT relative timestamps" \