From 8abf2e5a40789ea6ea6ceb068ab290a152d783f1 Mon Sep 17 00:00:00 2001
From: Tomas Cohen Arazi <tomascohen@theke.io>
Date: Fri, 9 Sep 2016 11:26:03 -0300
Subject: [PATCH] Bug 11921: (followup) Don't die on non-existent koha-conf.xml

This patch wraps the XMLin call on an eval block. It also adds unit
tests (mocked) for Koha::Config->read_from_file()

Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>

Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
---
 Koha/Config.pm  | 19 ++++++++++++++-
 t/Koha/Config.t | 62 +++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 80 insertions(+), 1 deletion(-)
 create mode 100644 t/Koha/Config.t

diff --git a/Koha/Config.pm b/Koha/Config.pm
index 117c404ead..f89ffb9a33 100644
--- a/Koha/Config.pm
+++ b/Koha/Config.pm
@@ -34,7 +34,24 @@ my $INSTALLED_CONFIG_FNAME = '__KOHA_CONF_DIR__/koha-conf.xml';
 # use C4::Context->config instead
 sub read_from_file {
     my ( $class, $file ) = @_;
-    return XMLin($file, keyattr => ['id'], forcearray => ['listen', 'server', 'serverinfo'], suppressempty => '');
+
+    return if not defined $file;
+
+    my $xml;
+    eval {
+        $xml = XMLin(
+            $file,
+            keyattr => ['id'],
+            forcearray => ['listen', 'server', 'serverinfo'],
+            suppressempty => ''
+        );
+    };
+
+    if ($@) {
+        warn "Error reading file $file";
+    }
+
+    return $xml;
 }
 
 # Koha's main configuration file koha-conf.xml
diff --git a/t/Koha/Config.t b/t/Koha/Config.t
new file mode 100644
index 0000000000..2363fdaf19
--- /dev/null
+++ b/t/Koha/Config.t
@@ -0,0 +1,62 @@
+#!/usr/bin/perl
+
+# This file is part of Koha.
+#
+# Koha 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 3 of the License, or
+# (at your option) any later version.
+#
+# Koha 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 Koha; if not, see <http://www.gnu.org/licenses>.
+
+use Modern::Perl;
+
+use Test::More tests => 2;
+use Test::MockModule;
+use Test::Warn;
+
+use Carp;
+
+my $parsing_result = 'ok';
+
+my $xml_simple = Test::MockModule->new('XML::Simple');
+$xml_simple->mock(
+    XMLin => sub {
+        if ( $parsing_result eq 'error' ) {
+            croak "Something";
+        } else {
+            return "XML data";
+        }
+    }
+);
+
+use_ok('Koha::Config');
+
+subtest 'read_from_file() tests' => sub {
+
+    plan tests => 4;
+
+    is( Koha::Config->read_from_file(undef), undef,
+        "Undef parameter makes function return undef");
+
+    $parsing_result = 'ok';
+
+    my $result = Koha::Config->read_from_file("SomeFile.xml");
+    is( $result, 'XML data', 'File read correctly' );
+
+    $parsing_result = 'error';
+
+    warning_is
+        {$result = Koha::Config->read_from_file("SomeFile.xml")}
+        'Error reading file SomeFile.xml',
+        'File failing to read raises warning';
+    is( $result, undef, 'Returns undef on error confition' );
+};
+
+1;
-- 
2.39.5