1 files changed, 67 insertions, 0 deletions
diff --git a/scripts/t/merge_changelogs.t b/scripts/t/merge_changelogs.t
new file mode 100644
index 0000000..3f76d5d
--- /dev/null
+++ b/scripts/t/merge_changelogs.t
@@ -0,0 +1,67 @@
+#!/usr/bin/perl
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+use strict;
+use warnings;
+
+use Test::More tests => 4;
+
+use File::Spec;
+use File::Compare;
+use File::Temp;
+
+use Dpkg::IPC;
+
+my $srcdir = $ENV{srcdir} || '.';
+my $datadir = "$srcdir/t/merge_changelogs";
+
+my $res;
+sub test_merge {
+    my ($expected_file, @options) = @_;
+    my $fh = File::Temp->new();
+    spawn(exec => [ $ENV{PERL}, "$srcdir/dpkg-mergechangelogs.pl", @options ],
+	  to_handle => $fh, error_to_file => '/dev/null',
+	  wait_child => 1, nocheck => 1);
+    my $res = compare($expected_file, $fh->filename);
+    if ($res) {
+	system('diff', '-u', $expected_file, $fh->filename);
+    }
+    ok($res == 0, "merged changelog matches expected one ($expected_file)");
+}
+
+my $has_alg_merge = 1;
+eval 'use Algorithm::Merge;';
+if ($@) {
+    $has_alg_merge = 0;
+}
+
+my @input = ("$datadir/ch-old", "$datadir/ch-a", "$datadir/ch-b");
+if ($has_alg_merge) {
+    test_merge("$datadir/ch-merged", @input);
+    test_merge("$datadir/ch-merged-pr", '-m', @input);
+    test_merge("$datadir/ch-unreleased-merged", '--merge-unreleased',
+        ("$datadir/ch-unreleased-old",
+         "$datadir/ch-unreleased-a",
+         "$datadir/ch-unreleased-b"));
+} else {
+    test_merge("$datadir/ch-merged-basic", @input);
+    test_merge("$datadir/ch-merged-pr-basic", '-m', @input);
+    test_merge("$datadir/ch-unreleased-merged-basic", '--merge-unreleased',
+        ("$datadir/ch-unreleased-old",
+         "$datadir/ch-unreleased-a",
+         "$datadir/ch-unreleased-b"));
+}
+test_merge("$datadir/ch-badver-merged",  ("$datadir/ch-badver-old",
+    "$datadir/ch-badver-a", "$datadir/ch-badver-b"));