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: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
Change-Id: I884f59cf1fcdcb33419dd02c69886715ce4db71b
Reviewed-on: https://review.lttng.org/c/babeltrace/+/1654
Tested-by: jenkins <jenkins@lttng.org>
Reviewed-by: Philippe Proulx <eeppeliteloop@gmail.com>
Reviewed-by: Michael Jeanson <mjeanson@efficios.com>

diff --git a/tests/cli/test_trimmer b/tests/cli/test_trimmer
index a3246b2cbeb5436e975ce480e01f2e7ea77c5943..9ef8980c812dd075c1b31778da22f0ebf8990989 100755 (executable)
--- a/tests/cli/test_trimmer
+++ b/tests/cli/test_trimmer
@@ -80,7 +80,8 @@ function expect_failure()
        isnt $? 0 "trimmer: ${msg}: exit status"
 
        num_events=$(wc -l < "${tmp_out}")
-       is "${num_events}" 0 "trimmer: ${msg}: number of events (0)"
+       # Use bash parameter expansion to strip spaces added by BSD 'wc' on macOs and Solaris
+       is "${num_events// /}" 0 "trimmer: ${msg}: number of events (0)"
 
        stderr="$(cat "${tmp_err}")"
        # "like" doesn't like when the passed text is empty.