comments: add regression test for sorting by date

t/comments.t

@@ -0,0 +1,57 @@
+#!/usr/bin/perl
+use warnings;
+use strict;
+use Test::More 'no_plan';
+use IkiWiki;
+
+ok(! system("rm -rf t/tmp"));
+ok(mkdir "t/tmp");
+ok(! system("cp -R t/tinyblog t/tmp/in"));
+ok(mkdir "t/tmp/in/post" or -d "t/tmp/in/post");
+
+my $comment;
+
+$comment = <<EOF;
+[[!comment username="neil"
+  date="1969-07-20T20:17:40Z"
+  content="I landed"]]
+EOF
+#ok(eval { writefile("post/comment_3._comment", "t/tmp/in", $comment); 1 });
+writefile("post/comment_3._comment", "t/tmp/in", $comment);
+
+$comment = <<EOF;
+[[!comment username="christopher"
+  date="1492-10-12T07:00:00Z"
+  content="I explored"]]
+EOF
+writefile("post/comment_2._comment", "t/tmp/in", $comment);
+
+$comment = <<EOF;
+[[!comment username="william"
+  date="1066-10-14T12:00:00Z"
+  content="I conquered"]]
+EOF
+writefile("post/comment_1._comment", "t/tmp/in", $comment);
+
+# Give the files mtimes in the wrong order
+ok(utime(111111111, 111111111, "t/tmp/in/post/comment_3._comment"));
+ok(utime(222222222, 222222222, "t/tmp/in/post/comment_2._comment"));
+ok(utime(333333333, 333333333, "t/tmp/in/post/comment_1._comment"));
+
+# Build the wiki
+ok(! system("make -s ikiwiki.out"));
+ok(! system("perl -I. ./ikiwiki.out -verbose -plugin comments -url=http://example.com -cgiurl=http://example.com/ikiwiki.cgi -rss -atom -underlaydir=underlays/basewiki -set underlaydirbase=underlays -set comments_pagespec='*' -templatedir=templates t/tmp/in t/tmp/out"));
+
+# Check that the comments are in the right order
+
+sub slurp {
+    open my $fh, "<", shift or return undef;
+    local $/;
+    my $content = <$fh>;
+    close $fh or return undef;
+    return $content;
+}
+
+my $content = slurp("t/tmp/out/post/index.html");
+ok(defined $content);
+ok($content =~ m/I conquered.*I explored.*I landed/s);