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diff --git a/lib/Test/Lintian/ConfigFile.pm b/lib/Test/Lintian/ConfigFile.pm
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+# Copyright (C) 2018 Felix Lechner
+#
+# 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, you can find it on the World Wide
+# Web at https://www.gnu.org/copyleft/gpl.html, or write to the Free
+# Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+# MA 02110-1301, USA
+
+package Test::Lintian::ConfigFile;
+
+=head1 NAME
+
+Test::Lintian::ConfigFile -- generic helper routines for colon-delimited configuration files
+
+=head1 SYNOPSIS
+
+use Test::Lintian::ConfigFile qw(read_config);
+my $desc = read_config('t/tags/testname/desc');
+
+=head1 DESCRIPTION
+
+Routines for dealing with colon-delimited configuration files.
+
+=cut
+
+use v5.20;
+use warnings;
+use utf8;
+
+use Exporter qw(import);
+
+BEGIN {
+    our @EXPORT_OK = qw(
+      read_config
+      write_config
+    );
+}
+
+use Carp;
+use Const::Fast;
+use List::SomeUtils qw(any);
+use Path::Tiny;
+use Unicode::UTF8 qw(encode_utf8);
+
+use Lintian::Deb822;
+
+const my $SPACE => q{ };
+const my $COLON => q{:};
+const my $NEWLINE => qq{\n};
+
+=head1 FUNCTIONS
+
+=over 4
+
+=item read_config(PATH, HASHREF)
+
+Reads the configuration file located at PATH into a hash and
+returns it. When also passed a HASHREF, will fill that instead.
+
+=cut
+
+sub read_config {
+    my ($configpath) = @_;
+
+    croak encode_utf8("Cannot find file $configpath.")
+      unless -e $configpath;
+
+    my $deb822 = Lintian::Deb822->new;
+    my @sections = $deb822->read_file($configpath);
+    die encode_utf8("$configpath does not have exactly one paragraph")
+      unless @sections == 1;
+
+    my $config = $sections[0];
+
+    return $config;
+}
+
+=item write_config(TEST_CASE, PATH)
+
+Write the config described by hash reference TEST_CASE to the file named PATH.
+
+=cut
+
+sub write_config {
+    my ($testcase, $path) = @_;
+
+    my $desc = path($path);
+    $desc->remove;
+
+    my @lines;
+    for my $name (sort $testcase->names) {
+
+        my @elements = $testcase->trimmed_list($name);
+
+        # multi-line output for some fields
+        if (@elements > 1
+            && any { fc eq fc($name) } qw(Test-For Test-Against)) {
+            push(@lines, $name . $COLON . $NEWLINE);
+            push(@lines, $SPACE . $_ . $NEWLINE) for @elements;
+            next;
+        }
+
+        push(@lines,
+            $name . $COLON . $SPACE . $testcase->value($name) . $NEWLINE);
+    }
+
+    $desc->append_utf8(@lines);
+
+    return;
+}
+
+=back
+
+=cut
+
+1;
+
+# Local Variables:
+# indent-tabs-mode: nil
+# cperl-indent-level: 4
+# End:
+# vim: syntax=perl sw=4 sts=4 sr et