Bug 28483: Fix t/Search/buildQuery.t

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>

t/Search/buildQuery.t

@@ -90,7 +90,7 @@ subtest "test weighted autotruncated" => sub {
     is($query_cgi,'idx=kw&q=test','Query cgi is correct');
     is($query_desc,'kw,wrdl: test','Query desc is correct');
     is($limit,'',"Limit is correct");
-    is($limit_cgi,undef,"Limit cgi is correct");
+    is($limit_cgi,'',"Limit cgi is correct");
     is($limit_desc,'',"Limit desc is correct");
     is($query_type,undef,"Query type is correct");
     my $q = Net::Z3950::ZOOM::query_create();
@@ -128,7 +128,7 @@ subtest "test* weighted autotruncated" => sub {
     is($query_cgi,'idx=kw&q=test%2A','Query cgi is correct');
     is($query_desc,'kw,wrdl: test*','Query desc is correct');
     is($limit,'',"Limit is correct");
-    is($limit_cgi,undef,"Limit cgi is correct");
+    is($limit_cgi,'',"Limit cgi is correct");
     is($limit_desc,'',"Limit desc is correct");
     is($query_type,undef,"Query type is correct");
     my $q = Net::Z3950::ZOOM::query_create();
@@ -165,7 +165,7 @@ subtest "test weighted not-autotruncated" => sub {
     is($query_cgi,'idx=kw&q=test','Query cgi is correct');
     is($query_desc,'kw,wrdl: test','Query desc is correct');
     is($limit,'',"Limit is correct");
-    is($limit_cgi,undef,"Limit cgi is correct");
+    is($limit_cgi,'',"Limit cgi is correct");
     is($limit_desc,'',"Limit desc is correct");
     is($query_type,undef,"Query type is correct");
     my $q = Net::Z3950::ZOOM::query_create();
@@ -314,7 +314,7 @@ subtest "one and two weighted autotruncated" => sub {
     is($query_cgi,'idx=kw&q=one%20and%20two','Query cgi is correct');
     is($query_desc,'kw,wrdl: one and two','Query desc is correct');
     is($limit,'',"Limit is correct");
-    is($limit_cgi,undef,"Limit cgi is correct");
+    is($limit_cgi,'',"Limit cgi is correct");
     is($limit_desc,'',"Limit desc is correct");
     is($query_type,undef,"Query type is correct");
     my $q = Net::Z3950::ZOOM::query_create();