Add a test for autoindex's current functionality

t/autoindex.t

@@ -0,0 +1,74 @@
+#!/usr/bin/perl
+package IkiWiki;
+
+use warnings;
+use strict;
+use Test::More;
+
+BEGIN { use_ok("IkiWiki"); }
+BEGIN { use_ok("IkiWiki::Render"); }
+BEGIN { use_ok("IkiWiki::Plugin::autoindex"); }
+BEGIN { use_ok("IkiWiki::Plugin::html"); }
+BEGIN { use_ok("IkiWiki::Plugin::mdwn"); }
+
+ok(! system("rm -rf t/tmp; mkdir t/tmp"));
+
+$config{verbose} = 1;
+$config{srcdir} = 't/tmp';
+$config{underlaydir} = 't/tmp';
+$config{underlaydirbase} = '.';
+$config{templatedir} = 'templates';
+$config{usedirs} = 1;
+$config{htmlext} = 'html';
+$config{wiki_file_chars} = "-[:alnum:]+/.:_";
+$config{userdir} = "users";
+$config{tagbase} = "tags";
+$config{default_pageext} = "mdwn";
+$config{wiki_file_prune_regexps} = [qr/^\./];
+
+is(checkconfig(), 1);
+
+%oldrenderedfiles=%pagectime=();
+%pagesources=%pagemtime=%oldlinks=%links=%depends=%typedlinks=%oldtypedlinks=
+%destsources=%renderedfiles=%pagecase=%pagestate=();
+
+# pages that (we claim) were deleted in an earlier pass
+$wikistate{autoindex}{deleted}{deleted} = 1;
+$wikistate{autoindex}{deleted}{expunged} = 1;
+$wikistate{autoindex}{deleted}{reinstated} = 1;
+
+foreach my $page (qw(tags/numbers deleted/bar reinstated reinstated/foo gone/bar)) {
+	# we use a non-default extension for these, so they're distinguishable
+	# from programmatically-created pages
+	$pagesources{$page} = "$page.html";
+	$pagemtime{$page} = $pagectime{$page} = 1000000;
+	writefile("$page.html", "t/tmp", "your ad here");
+}
+
+# "gone" disappeared just before this refresh pass so it still has a mtime
+$pagemtime{gone} = $pagectime{gone} = 1000000;
+
+IkiWiki::Plugin::autoindex::refresh();
+
+# these pages are still on record as having been deleted, because they have
+# a reason to be re-created
+is($wikistate{autoindex}{deleted}{deleted}, 1);
+is($wikistate{autoindex}{deleted}{gone}, 1);
+ok(! -f "t/tmp/deleted.mdwn");
+ok(! -f "t/tmp/gone.mdwn");
+
+# this page does not exist and has no reason to be re-created, so we forget
+# about it - it will be re-created if it gains sub-pages
+ok(! exists $wikistate{autoindex}{deleted}{expunged});
+ok(! -f "t/tmp/expunged.mdwn");
+
+# this page was re-created, so it drops off the radar
+ok(! exists $wikistate{autoindex}{deleted}{reinstated});
+ok(! -f "t/tmp/reinstated.mdwn");
+
+# needs creating
+ok(! exists $wikistate{autoindex}{deleted}{tags});
+ok(-s "t/tmp/tags.mdwn");
+
+done_testing();
+1;