chore: use TAP::Harness for unit tests

tests/functional/launch_tests_on_instance.sh

@@ -758,20 +758,11 @@ runtests()
 
 if [ "$opt_unit_tests" = 1 ]; then
     echo '=== running unit tests ==='
-    # a while read loop doesn't work well here:
-    # shellcheck disable=SC2044
-    for f in $(find "$basedir/tests/unit/" -mindepth 1 -maxdepth 1 -type f -name "*.pl" -print)
-    do
-        fbasename=$(basename "$f")
-        echo "-> $fbasename"
-        set +e
-        $r0 perl "$opt_remote_basedir/tests/unit/$fbasename"; ret=$?
-        set -e
-        if [ $ret != 0 ]; then
-            printf "%b%b%b\\n" "$WHITE_ON_RED" "Unit tests failed (ret=$ret) :(" "$NOC"
-            exit 1
-        fi
-    done
+    $r0 perl "$opt_remote_basedir/tests/unit/run-tests.pl"; ret=$?
+    if [ $ret != 0 ]; then
+        printf "%b%b%b\\n" "$WHITE_ON_RED" "Unit tests failed (ret=$ret) :(" "$NOC"
+        exit 1
+    fi
 fi
 
 if [ "$opt_functional_tests" = 1 ]; then

tests/unit/run-tests.pl

@@ -0,0 +1,18 @@
+#! /usr/bin/env perl
+# vim: set filetype=perl ts=4 sw=4 sts=4 et:
+use common::sense;
+use TAP::Harness;
+
+use FindBin qw{ $RealDir };
+
+my @testfiles = glob("$RealDir/tests/*.t");
+print "Got " . @testfiles . " unit test files to run:\n";
+
+my $harness = TAP::Harness->new(
+    {
+        verbosity => 0,
+        failures  => 1,
+        color     => 1,
+    }
+);
+exit($harness->runtests(@testfiles)->all_passed ? 0 : 1);

tests/unit/tests/base.t

@@ -5,7 +5,7 @@ use Test::More;
 use Test::Deep;
 
 use File::Basename;
-use lib dirname(__FILE__) . '/../../lib/perl';
+use lib dirname(__FILE__) . '/../../../lib/perl';
 use OVH::Bastion;
 use OVH::Result;
 use JSON;

tests/unit/tests/is_access_granted_ipv4.t

@@ -5,7 +5,7 @@ use Test::More;
 use Test::Deep;
 
 use File::Basename;
-use lib dirname(__FILE__) . '/../../lib/perl';
+use lib dirname(__FILE__) . '/../../../lib/perl';
 use OVH::Bastion;
 use OVH::Result;
 

tests/unit/tests/is_access_granted_ipv6.t

@@ -5,7 +5,7 @@ use Test::More;
 use Test::Deep;
 
 use File::Basename;
-use lib dirname(__FILE__) . '/../../lib/perl';
+use lib dirname(__FILE__) . '/../../../lib/perl';
 use OVH::Bastion;
 use OVH::Result;