X-Git-Url: http://git.vanrenterghem.biz/git.ikiwiki.info.git/blobdiff_plain/ecdfd1b8644bc926db008054ab6192e18351afed..60188d728080c3e558b647d7595ea376944f51d0:/t/cvs.t

diff --git a/t/cvs.t b/t/cvs.t
index 96359ab6e..cbac43252 100755
--- a/t/cvs.t
+++ b/t/cvs.t
@@ -1,85 +1,708 @@
 #!/usr/bin/perl
 use warnings;
 use strict;
-my $dir;
-BEGIN {
-	$dir="/tmp/ikiwiki-test-cvs.$$";
-	my $cvs=`which cvs`;
-	chomp $cvs;
-	my $cvsps=`which cvsps`;
-	chomp $cvsps;
-	if (! -x $cvs || ! -x $cvsps || ! mkdir($dir)) {
-		eval q{
-			use Test::More skip_all => "cvs or cvsps not available or could not make test dir"
-		}
+use Test::More; my $total_tests = 72;
+use IkiWiki;
+
+my $default_test_methods = '^test_*';
+my @required_programs = qw(
+	cvs
+	cvsps
+);
+my @required_modules = qw(
+	File::chdir
+	File::MimeInfo
+	Date::Parse
+	File::Temp
+	File::ReadBackwards
+);
+my $dir = "/tmp/ikiwiki-test-cvs.$$";
+
+# TESTS FOR GENERAL META-BEHAVIOR
+
+sub test_web_comments {
+	# how much of the web-edit workflow are we actually testing?
+	# because we want to test comments:
+	# - when the first comment for page.mdwn is added, and page/ is
+	#   created to hold the comment, page/ isn't added to CVS control,
+	#   so the comment isn't either
+	#   - can't reproduce after chmod g+s ikiwiki.cgi (20120204)
+	# - side effect for moderated comments: after approval they
+	#   show up normally AND are still pending, too
+	# - comments.pm treats rcs_commit_staged() as returning conflicts?
+}
+
+sub test_chdir_magic {
+	# when are we bothering with "local $CWD" and when aren't we?
+}
+
+sub test_cvs_info {
+	# inspect "Repository revision" (used in code)
+	# inspect "Sticky Options" (used in tests to verify existence of "-kb")
+}
+
+sub test_cvs_run_cvs {
+	# extract the stdout-redirect thing
+	# - prove that it silences stdout
+	# - prove that stderr comes through just fine
+	# prove that when cvs exits nonzero (fail), function exits false
+	# prove that when cvs exits zero (success), function exits true
+	# always pass -f, just in case
+	# steal from git.pm: safe_git(), run_or_{die,cry,non}
+	# - open() instead of system()
+	# always call cvs_run_cvs(), don't ever run 'cvs' directly
+	# - for cvs_info(), make it respect wantarray
+}
+
+sub test_cvs_run_cvsps {
+	# parameterize command like run_cvs()
+	# expose config vars for e.g. "--cvs-direct -z 30"
+	# always pass -x (unless proven otherwise)
+	# - but diff doesn't! optimization alert
+	# always pass -b HEAD (configurable like gitmaster_branch?)
+}
+
+sub test_cvs_parse_cvsps {
+	# extract method from rcs_recentchanges
+	# document expected changeset format
+	# document expected changeset delimiter
+	# try: cvsps -q -x -p && ls | sort -rn | head -100
+	# - benchmark against current impl (that uses File::ReadBackwards)
+}
+
+sub test_cvs_parse_log_accum {
+	# add new, preferred method for rcs_recentchanges to use
+	# teach log_accum to record commits (into transient?)
+	# script cvsps to bootstrap (or replace?) commit history
+	# teach ikiwiki-makerepo to set up log_accum and commit_prep
+	# why are NetBSD commit mails unreliable?
+	# - is it working for CVS commits and failing for web commits?
+}
+
+sub test_cvs_is_controlling {
+	# with no args:
+	# - if srcdir is in CVS, return true
+	# - else, return false
+	# with a dir arg:
+	# - if dir is in CVS, return true
+	# - else, return false
+	# with a file arg:
+	# - is there anything that wants the answer? if so, answer
+	# - else, die
+}
+
+
+# TESTS FOR GENERAL PLUGIN API CALLS
+
+sub test_checkconfig {
+	my $default_cvspath = 'ikiwiki';
+
+	undef $config{cvspath}; IkiWiki::checkconfig();
+	is(
+		$config{cvspath}, $default_cvspath,
+		q{can provide default cvspath},
+	);
+
+	$config{cvspath} = "/$default_cvspath/"; IkiWiki::checkconfig();
+	is(
+		$config{cvspath}, $default_cvspath,
+		q{can set typical cvspath and strip well-meaning slashes},
+	);
+
+	$config{cvspath} = "/$default_cvspath//subdir"; IkiWiki::checkconfig();
+	is(
+		$config{cvspath}, "$default_cvspath/subdir",
+		q{can really sanitize cvspath as assumed by rcs_recentchanges},
+	);
+
+	my $default_num_wrappers = @{$config{wrappers}};
+	undef $config{cvs_wrapper}; IkiWiki::checkconfig();
+	is(
+		@{$config{wrappers}}, $default_num_wrappers,
+		q{can start with no wrappers configured},
+	);
+
+	$config{cvs_wrapper} = $config{cvsrepo} . "/CVSROOT/post-commit";
+	IkiWiki::checkconfig();
+	is(
+		@{$config{wrappers}}, ++$default_num_wrappers,
+		q{can add cvs_wrapper},
+	);
+
+	undef $config{cvs_wrapper};
+	$config{cvspath} = $default_cvspath;
+	IkiWiki::checkconfig();
+}
+
+sub test_getsetup {
+	# anything worth testing?
+}
+
+sub test_genwrapper {
+	# testable directly? affects rcs_add, but are we exercising this?
+}
+
+
+# TESTS FOR VCS PLUGIN API CALLS
+
+sub test_rcs_update {
+	# can it assume we're under CVS control? or must it check?
+	# anything else worth testing?
+}
+
+sub test_rcs_prepedit {
+	# can it assume we're under CVS control? or must it check?
+	# for existing file, returns latest revision in repo
+	# - what's this used for? should it return latest revision in checkout?
+	# for new file, returns empty string
+
+	# netbsd web log says "could not open lock file"
+	# XXX does this work right?
+	# how about with un-added dirs in the srcdir?
+	# how about with cvsps.core lying around?
+}
+
+sub test_rcs_commit {
+	# can it assume we're under CVS control? or must it check?
+	# if someone else changed the page since rcs_prepedit was called:
+	# - try to merge into our working copy
+	# - if merge succeeds, proceed to commit
+	# - else, return page content with the conflict markers in it
+	# commit:
+	# - if success, return undef
+	# - else, revert + return content with the conflict markers in it
+	# git.pm receives "session" param -- useful here?
+	# web commits start with "web commit {by,from} "
+
+	# XXX commit can fail due to "could not open lock file"
+}
+
+sub test_rcs_commit_staged {
+	# if commit succeeds, return undef
+	# else, warn and return error message (really? or just non-undef?)
+}
+
+sub test_rcs_add {
+	my @changes = IkiWiki::rcs_recentchanges(3);
+	is_total_number_of_changes(\@changes, 0);
+
+	my $message = "add a top-level ASCII (non-UTF-8) page via VCS API";
+	my $file = q{test0.mdwn};
+	add_and_commit($file, $message, qq{# \$Id\$\n* some plain ASCII text});
+	is_newly_added($file);
+	is_in_keyword_substitution_mode($file, q{-kkv});
+	like(
+		readfile($config{srcdir} . "/$file"),
+		qr/^# \$Id: $file,v 1\.1 .+\$$/m,
+		q{can expand RCS Id keyword},
+	);
+	my $generated_file = $config{destdir} . q{/test0/index.html};
+	ok(-e $generated_file, q{post-commit hook generates content});
+	like(
+		readfile($generated_file),
+		qr/^<h1>\$Id: $file,v 1\.1 .+\$<\/h1>$/m,
+		q{can htmlize mdwn, including RCS Id},
+	);
+	@changes = IkiWiki::rcs_recentchanges(3);
+	is_total_number_of_changes(\@changes, 1);
+	is_most_recent_change(\@changes, stripext($file), $message);
+
+	$message = "add a top-level dir via VCS API";
+	my $dir1 = q{test3};
+	can_mkdir($dir1);
+	IkiWiki::rcs_add($dir1);
+	# XXX test that the wrapper hangs here without our genwrapper()
+	# XXX test that the wrapper doesn't hang here with it
+	@changes = IkiWiki::rcs_recentchanges(3);
+	is_total_number_of_changes(\@changes, 1);	# despite the dir add
+	IkiWiki::rcs_commit(
+		file => $dir1,
+		message => $message,
+		token => "oom",
+	);
+	@changes = IkiWiki::rcs_recentchanges(3);
+	is_total_number_of_changes(\@changes, 1);	# dirs aren't tracked
+
+	$message = "add a non-ASCII (UTF-8) text file in an un-added dir";
+	can_mkdir($_) for (qw(test4 test4/test5));
+	$file = q{test4/test5/test1.mdwn};
+	add_and_commit($file, $message, readfile("t/test1.mdwn"));
+	is_newly_added($file);
+	is_in_keyword_substitution_mode($file, q{-kkv});
+	@changes = IkiWiki::rcs_recentchanges(3);
+	is_total_number_of_changes(\@changes, 2);
+	is_most_recent_change(\@changes, stripext($file), $message);
+
+	$message = "add a binary file in an un-added dir, and commit_staged";
+	can_mkdir(q{test6});
+	$file = q{test6/test7.ico};
+	my $bindata_in = readfile("doc/favicon.ico", 1);
+	my $bindata_out = sub { readfile($config{srcdir} . "/$file", 1) };
+	writefile($file, $config{srcdir}, $bindata_in, 1);
+	is(&$bindata_out(), $bindata_in, q{binary files match before commit});
+	IkiWiki::rcs_add($file);
+	IkiWiki::rcs_commit_staged(message => $message);
+	is_newly_added($file);
+	is_in_keyword_substitution_mode($file, q{-kb});
+	is(&$bindata_out(), $bindata_in, q{binary files match after commit});
+	@changes = IkiWiki::rcs_recentchanges(3);
+	is_total_number_of_changes(\@changes, 3);
+	is_most_recent_change(\@changes, $file, $message);
+	ok(
+		unlink($config{srcdir} . "/$file"),
+		q{can remove file in order to re-fetch it from repo},
+	);
+	ok(! -e $config{srcdir} . "/$file", q{really removed file});
+	IkiWiki::rcs_update();
+	is(&$bindata_out(), $bindata_in, q{binary files match after re-fetch});
+
+	$message = "add a UTF-8 and a binary file in different dirs";
+	my $file1 = "test8/test9.mdwn";
+	my $file2 = "test10/test11.ico";
+	can_mkdir($_) for (qw(test8 test10));
+	writefile($file1, $config{srcdir}, readfile('t/test2.mdwn'));
+	writefile($file2, $config{srcdir}, $bindata_in, 1);
+	IkiWiki::rcs_add($_) for ($file1, $file2);
+	IkiWiki::rcs_commit_staged(message => $message);
+	is_newly_added($_) for ($file1, $file2);
+	is_in_keyword_substitution_mode($file1, q{-kkv});
+	is_in_keyword_substitution_mode($file2, q{-kb});
+	@changes = IkiWiki::rcs_recentchanges(3);
+	is_total_number_of_changes(\@changes, 3);
+	@changes = IkiWiki::rcs_recentchanges(4);
+	is_total_number_of_changes(\@changes, 4);
+	# XXX test for both files in the commit, and no other files
+	is_most_recent_change(\@changes, $file2, $message);
+
+	$message = "remove the UTF-8 and binary files we just added";
+	IkiWiki::rcs_remove($_) for ($file1, $file2);
+	IkiWiki::rcs_commit_staged(message => $message);
+	ok(! -d "$config{srcdir}/test8", q{empty dir pruned by post-commit});
+	ok(! -d "$config{srcdir}/test10", q{empty dir pruned by post-commit});
+	@changes = IkiWiki::rcs_recentchanges(11);
+	is_total_number_of_changes(\@changes, 5);
+	# XXX test for both files in the commit, and no other files
+	is_most_recent_change(\@changes, $file2, $message);
+
+	$message = "re-add UTF-8 and binary files with names swapped";
+	writefile($file2, $config{srcdir}, readfile('t/test2.mdwn'));
+	writefile($file1, $config{srcdir}, $bindata_in, 1);
+	IkiWiki::rcs_add($_) for ($file1, $file2);
+	IkiWiki::rcs_commit_staged(message => $message);
+	isnt_newly_added($_) for ($file1, $file2);
+	is_in_keyword_substitution_mode($file2, q{-kkv});
+	is_in_keyword_substitution_mode($file1, q{-kb});
+	@changes = IkiWiki::rcs_recentchanges(11);
+	is_total_number_of_changes(\@changes, 6);
+	# XXX test for both files in the commit, and no other files
+	is_most_recent_change(\@changes, $file2, $message);
+
+	# prevent web edits from attempting to create .../CVS/foo.mdwn
+	# on case-insensitive filesystems, also prevent .../cvs/foo.mdwn
+	# unless your "CVS" is something else and we've made it configurable
+	# also want a pre-commit hook for this?
+
+	# pre-commit hook:
+	# - lcase filenames
+	# - ?
+
+	# can it assume we're under CVS control? or must it check?
+}
+
+sub test_rcs_remove {
+	# can it assume we're under CVS control? or must it check?
+	# remove a top-level file
+	# - rcs_commit
+	# - inspect recentchanges: one new change, file removed
+	# remove two files (in different dirs)
+	# - rcs_commit_staged
+	# - inspect recentchanges: one new change, both files removed
+}
+
+sub test_rcs_rename {
+	# can it assume we're under CVS control? or must it check?
+	# rename a file in the same dir
+	# - rcs_commit_staged
+	# - inspect recentchanges: one new change, one file removed, one added
+	# rename a file into a different dir
+	# - rcs_commit_staged
+	# - inspect recentchanges: one new change, one file removed, one added
+	# rename a file into a not-yet-existing dir
+	# - rcs_commit_staged
+	# - inspect recentchanges: one new change, one file removed, one added
+	# is it safe to use "mv"? what if $dest is somehow outside the wiki?
+}
+
+sub test_rcs_recentchanges {
+	my @changes = IkiWiki::rcs_recentchanges(3);
+	is_total_number_of_changes(\@changes, 0);
+
+	my $message = "Add a page via CVS directly";
+	my $file = q{test2.mdwn};
+	writefile($file, $config{srcdir}, readfile(q{t/test2.mdwn}));
+	system "cd $config{srcdir}"
+		. " && cvs add $file >/dev/null 2>&1";
+	system "cd $config{srcdir}"
+		. " && cvs commit -m \"$message\" $file >/dev/null";
+
+	@changes = IkiWiki::rcs_recentchanges(3);
+	is_total_number_of_changes(\@changes, 1);
+	is_most_recent_change(\@changes, stripext($file), $message);
+
+	# CVS commits run ikiwiki once for every committed file (!)
+	# - commit_prep alone should fix this
+	# CVS multi-dir commits show only the first dir in recentchanges
+	# - commit_prep might also fix this?
+	# CVS post-commit hook is amped off to avoid locking against itself
+	# - commit_prep probably doesn't fix this... but maybe?
+	# can it assume we're under CVS control? or must it check?
+	# don't worry whether we're called with a number (we always are)
+	# other rcs tests already inspect much of the returned structure
+	# CVS commits say "cvs" and get the right committer
+	# web commits say "web" and get the right committer
+	# - and don't start with "web commit {by,from} "
+	# "nickname" -- can we ever meaningfully set this?
+
+	# prefer log_accum, then cvsps, else die
+	# run the high-level recentchanges tests 2x (once for each method)
+	# - including in other test subs that check recentchanges?
+}
+
+sub test_rcs_diff {
+	my @changes = IkiWiki::rcs_recentchanges(3);
+	is_total_number_of_changes(\@changes, 0);
+
+	my $message = "add a UTF-8 and an ASCII file in different dirs";
+	my $file1 = "rcsdiff1/utf8.mdwn";
+	my $file2 = "rcsdiff2/ascii.mdwn";
+	my $contents2 = ''; $contents2 .= "$_. foo\n" for (1..11);
+	can_mkdir($_) for (qw(rcsdiff1 rcsdiff2));
+	writefile($file1, $config{srcdir}, readfile('t/test2.mdwn'));
+	writefile($file2, $config{srcdir}, $contents2);
+	IkiWiki::rcs_add($_) for ($file1, $file2);
+	IkiWiki::rcs_commit_staged(message => $message);
+
+	# XXX we rely on rcs_recentchanges() to be called first!
+	# XXX or else for no cvsps cache to exist yet...
+	# XXX because rcs_diff() doesn't pass -x (as an optimization)
+	@changes = IkiWiki::rcs_recentchanges(3);
+	is_total_number_of_changes(\@changes, 1);
+
+	unlike(
+		$changes[0]->{pages}->[0]->{diffurl},
+		qr/%2F/m,
+		q{path separators are preserved when UTF-8scaping filename},
+	);
+
+	my $changeset = 1;
+
+	my $maxlines = undef;
+	my $scalar_diffs = IkiWiki::rcs_diff($changeset, $maxlines);
+	like(
+		$scalar_diffs,
+		qr/^\+11\. foo$/m,
+		q{unbounded scalar diffs go all the way to 11},
+	);
+	my @array_diffs = IkiWiki::rcs_diff($changeset, $maxlines);
+	is(
+		$array_diffs[$#array_diffs],
+		"+11. foo\n",
+		q{unbounded array diffs go all the way to 11},
+	);
+
+	$maxlines = 8;
+	$scalar_diffs = IkiWiki::rcs_diff($changeset, $maxlines);
+	unlike(
+		$scalar_diffs,
+		qr/^\+11\. foo$/m,
+		q{bounded scalar diffs don't go all the way to 11},
+	);
+	@array_diffs = IkiWiki::rcs_diff($changeset, $maxlines);
+	isnt(
+		$array_diffs[$#array_diffs],
+		"+11. foo\n",
+		q{bounded array diffs don't go all the way to 11},
+	);
+	is(
+		scalar @array_diffs,
+		$maxlines,
+		q{bounded array diffs contain expected maximum number of lines},
+	);
+
+	# can it assume we're under CVS control? or must it check?
+}
+
+sub test_rcs_getctime {
+	# can it assume we're under CVS control? or must it check?
+	# given a file, find its creation time, else return 0
+	# first implement in the obvious way
+	# then cache
+}
+
+sub test_rcs_getmtime {
+	# can it assume we're under CVS control? or must it check?
+	# given a file, find its modification time, else return 0
+	# first implement in the obvious way
+	# then cache
+}
+
+sub test_rcs_receive {
+	my $description = q{rcs_receive doesn't make sense for CVS};
+	exists $IkiWiki::hooks{rcs}{rcs_receive}
+		? fail($description)
+		: pass($description);
+}
+
+sub test_rcs_preprevert {
+	# can it assume we're under CVS control? or must it check?
+	# given a patchset number, return structure describing what'd happen:
+	# - see doc/plugins/write.mdwn:rcs_receive()
+	# don't forget about attachments
+}
+
+sub test_rcs_revert {
+	# test rcs_recentchanges() real darn well
+	# extract read-backwards patchset parser from rcs_recentchanges()
+	# recentchanges: given max, return list of changeset/files/etc.
+	# revert: given changeset ID, return list of file/rev/action
+	#
+	# can it assume we're under CVS control? or must it check?
+	# given a patchset number, stage the revert for rcs_commit_staged()
+	# if commit succeeds, return undef
+	# else, warn and return error message (really? or just non-undef?)
+}
+
+sub main {
+	my $test_methods = defined $ENV{TEST_METHOD} 
+			 ? $ENV{TEST_METHOD}
+			 : $default_test_methods;
+
+	_startup($test_methods eq $default_test_methods);
+	_runtests(_get_matching_test_subs($test_methods));
+	_shutdown($test_methods eq $default_test_methods);
+}
+
+main();
+
+
+# INTERNAL SUPPORT ROUTINES
+
+sub _plan_for_test_more {
+	my $can_plan = shift;
+
+	foreach my $program (@required_programs) {
+		my $program_path = `which $program`;
+		chomp $program_path;
+		return plan(skip_all => "$program not available")
+			unless -x $program_path;
 	}
-	foreach my $module ('File::ReadBackwards', 'File::MimeInfo') {
+
+	foreach my $module (@required_modules) {
 		eval qq{use $module};
-		if ($@) {
-			eval qq{
-				use Test::More skip_all => "$module not available"
-			}
-		}
+		return plan(skip_all => "$module not available")
+			if $@;
 	}
+
+	return plan(skip_all => "can't create $dir: $!")
+		unless mkdir($dir);
+	return plan(skip_all => "can't remove $dir: $!")
+		unless rmdir($dir);
+
+	return unless $can_plan;
+
+	return plan(tests => $total_tests);
+}
+
+# http://stackoverflow.com/questions/607282/whats-the-best-way-to-discover-all-subroutines-a-perl-module-has
+
+use B qw/svref_2object/;
+
+sub in_package {
+	my ($coderef, $package) = @_;
+	my $cv = svref_2object($coderef);
+	return if not $cv->isa('B::CV') or $cv->GV->isa('B::SPECIAL');
+	return $cv->GV->STASH->NAME eq $package;
+}
+
+sub list_module {
+	my $module = shift;
+	no strict 'refs';
+	return grep {
+		defined &{"$module\::$_"} and in_package(\&{*$_}, $module)
+	} keys %{"$module\::"};
+}
+
+
+# support for xUnit-style testing, a la Test::Class
+
+sub _startup {
+	my $can_plan = shift;
+	_plan_for_test_more($can_plan);
+	hook(type => "genwrapper", id => "cvstest", call => \&_wrapper_paths);
+	_generate_test_config();
+}
+
+sub _shutdown {
+	my $had_plan = shift;
+	done_testing() unless $had_plan;
+}
+
+sub _setup {
+	_generate_test_repo();
 }
-use Test::More tests => 12;
-
-BEGIN { use_ok("IkiWiki"); }
-
-%config=IkiWiki::defaultconfig();
-$config{rcs} = "cvs";
-$config{srcdir} = "$dir/src";
-$config{cvsrepo} = "$dir/repo";
-$config{cvspath} = "ikiwiki";
-IkiWiki::loadplugins();
-IkiWiki::checkconfig();
-
-my $cvsrepo = "$dir/repo";
-
-system "cvs -d $cvsrepo init >/dev/null";
-system "mkdir $dir/ikiwiki >/dev/null";
-system "cd $dir/ikiwiki && cvs -d $cvsrepo import -m import ikiwiki VENDOR RELEASE >/dev/null";
-system "rm -rf $dir/ikiwiki >/dev/null";
-system "cvs -d $cvsrepo co -d $config{srcdir} ikiwiki >/dev/null";
-
-# Web commit
-my $test1 = readfile("t/test1.mdwn");
-writefile('test1.mdwn', $config{srcdir}, $test1);
-IkiWiki::rcs_add("test1.mdwn");
-IkiWiki::rcs_commit(
-	files => "test1.mdwn",
-	message => "Added the first page",
-	token => "moo"
-);
 
-my @changes;
-@changes = IkiWiki::rcs_recentchanges(3);
-
-is($#changes, 0);
-is($changes[0]{message}[0]{"line"}, "Added the first page");
-is($changes[0]{pages}[0]{"page"}, "test1");
-
-# Manual commit
-my $message = "Added the second page";
-
-my $test2 = readfile("t/test2.mdwn");
-writefile('test2.mdwn', $config{srcdir}, $test2);
-system "cd $config{srcdir} && cvs add test2.mdwn >/dev/null 2>&1";
-system "cd $config{srcdir} && cvs commit -m \"$message\" test2.mdwn >/dev/null";
-
-@changes = IkiWiki::rcs_recentchanges(3);
-is($#changes, 1);
-is($changes[0]{message}[0]{"line"}, $message);
-is($changes[0]{pages}[0]{"page"}, "test2");
-is($changes[1]{pages}[0]{"page"}, "test1");
-
-# extra slashes in the path shouldn't break things
-$config{cvspath} = "/ikiwiki//";
-IkiWiki::checkconfig();
-@changes = IkiWiki::rcs_recentchanges(3);
-is($#changes, 1);
-is($changes[0]{message}[0]{"line"}, $message);
-is($changes[0]{pages}[0]{"page"}, "test2");
-is($changes[1]{pages}[0]{"page"}, "test1");
-
-system "rm -rf $dir";
+sub _teardown {
+	system "rm -rf $dir";
+}
+
+sub _runtests {
+	my @coderefs = (@_);
+	for (@coderefs) {
+		_setup();
+		$_->();
+		_teardown();
+	}
+}
+
+sub _get_matching_test_subs {
+	my $re = shift;
+	no strict 'refs';
+	return map { \&{*$_} } grep { /$re/ } sort(list_module('main'));
+}
+
+sub _generate_test_config {
+	%config = IkiWiki::defaultconfig();
+	$config{rcs} = "cvs";
+	$config{srcdir} = "$dir/src";
+	$config{allow_symlinks_before_srcdir} = 1;
+	$config{destdir} = "$dir/dest";
+	$config{cvsrepo} = "$dir/repo";
+	$config{cvspath} = "ikiwiki";
+	use Cwd; $config{templatedir} = getcwd() . '/templates';
+	$config{diffurl} = "/nonexistent/cvsweb/[[file]]";
+	IkiWiki::loadplugins();
+	IkiWiki::checkconfig();
+}
+
+sub _generate_test_repo {
+	die "can't create $dir: $!"
+		unless mkdir($dir);
+
+	my $cvs = "cvs -d $config{cvsrepo}";
+	my $dn = ">/dev/null";
+
+	system "$cvs init $dn";
+	system "mkdir $dir/$config{cvspath} $dn";
+	system "cd $dir/$config{cvspath} && "
+		. "$cvs import -m import $config{cvspath} VENDOR RELEASE $dn";
+	system "rm -rf $dir/$config{cvspath} $dn";
+	system "$cvs co -d $config{srcdir} $config{cvspath} $dn";
+
+	_generate_and_configure_post_commit_hook();
+}
+
+sub _generate_and_configure_post_commit_hook {
+	$config{cvs_wrapper} = $config{cvsrepo} . "/CVSROOT/test-post";
+	$config{wrapper} = $config{cvs_wrapper};
+
+	require IkiWiki::Wrapper;
+	{
+		no warnings 'once';
+		$IkiWiki::program_to_wrap = 'ikiwiki.out';
+		# XXX substitute its interpreter to Makefile's $(PERL)
+		# XXX best solution: do this to all scripts during build
+	}
+	IkiWiki::gen_wrapper();
+
+	my $cvs = "cvs -d $config{cvsrepo}";
+	my $dn = ">/dev/null";
+
+	system "mkdir $config{destdir} $dn";
+	system "cd $dir && $cvs co CVSROOT $dn && cd CVSROOT && " .
+		"echo 'DEFAULT $config{cvsrepo}/CVSROOT/test-post %{sVv} &' "
+		. " >> loginfo && "
+		. "$cvs commit -m 'test repo setup' $dn && "
+		. "cd .. && rm -rf CVSROOT";
+}
+
+sub add_and_commit {
+	my ($file, $message, $contents) = @_;
+	writefile($file, $config{srcdir}, $contents);
+	IkiWiki::rcs_add($file);
+	IkiWiki::rcs_commit(
+		file => $file,
+		message => $message,
+		token => "moo",
+	);
+}
+
+sub can_mkdir {
+	my $dir = shift;
+	ok(
+		mkdir($config{srcdir} . "/$dir"),
+		qq{can mkdir $dir},
+	);
+}
+
+sub is_newly_added { _newly_added_or_not(shift, 1) }
+sub isnt_newly_added { _newly_added_or_not(shift, 0) }
+sub _newly_added_or_not {
+	my ($file, $expected_new) = @_;
+	my ($func, $word);
+	if ($expected_new) {
+		$func = \&Test::More::is;
+		$word = q{is};
+	}
+	else {
+		$func = \&Test::More::isnt;
+		$word = q{isn't};
+	}
+	$func->(
+		IkiWiki::Plugin::cvs::cvs_info("Repository revision", $file),
+		'1.1',
+		qq{$file $word newly added to CVS},
+	);
+}
+
+sub is_in_keyword_substitution_mode {
+	my ($file, $mode) = @_;
+	is(
+		IkiWiki::Plugin::cvs::cvs_info("Sticky Options", $file),
+		$mode,
+		qq{$file is in CVS with expected keyword substitution mode},
+	);
+}
+
+sub is_total_number_of_changes {
+	my ($changes, $expected_total) = @_;
+	is(
+		$#{$changes},
+		$expected_total - 1,
+		qq{total commits == $expected_total},
+	);
+}
+
+sub is_most_recent_change {
+	my ($changes, $page, $message) = @_;
+	is(
+		$changes->[0]{message}[0]{"line"},
+		$message,
+		q{most recent commit's first message line matches},
+	);
+	is(
+		$changes->[0]{pages}[0]{"page"},
+		$page,
+		q{most recent commit's first pagename matches},
+	);
+}
+
+sub stripext {
+	my ($file, $extension) = @_;
+	$extension = '\..+?' unless defined $extension;
+	$file =~ s|$extension$||g;
+	return $file;
+}
+
+sub _wrapper_paths {
+	return qq{newenviron[i++]="PERL5LIB=$ENV{PERL5LIB}";};
+}