X-Git-Url: https://sipb.mit.edu/gitweb.cgi/ikiwiki.git/blobdiff_plain/ea04eb410289f9a3919e25d280079d5cfb35d3f0..9dd8007b44541c752174c5d2a07e83613c7439bd:/t/cvs.t

diff --git a/t/cvs.t b/t/cvs.t
index cfc33261f..cbac43252 100755
--- a/t/cvs.t
+++ b/t/cvs.t
@@ -1,239 +1,41 @@
 #!/usr/bin/perl
 use warnings;
 use strict;
-use Test::More; my $total_tests = 9;
+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.$$";
 
-sub _plan_for_test_more {
-	my $can_plan = shift;
-
-	foreach my $program (qw(
-		cvs
-		cvsps
-	)) {
-		my $program_path = `which $program`;
-		chomp $program_path;
-		return plan(skip_all => "$program not available")
-			unless -x $program_path;
-	}
-
-	foreach my $module (qw(
-		File::chdir
-		File::MimeInfo
-		Date::Parse
-		File::Temp
-		File::ReadBackwards
-	)) {
-		eval qq{use $module};
-		return plan(skip_all => "$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);
-	_generate_test_config();
-}
-
-sub _shutdown {
-	my $had_plan = shift;
-	done_testing() unless $had_plan;
-}
-
-sub _setup {
-	_generate_test_repo();
-}
-
-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";
-	$config{cvsrepo} = "$dir/repo";
-	$config{cvspath} = "ikiwiki";
-	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";
-}
+# TESTS FOR GENERAL META-BEHAVIOR
 
-
-# tests for general meta-behavior:
-
-sub test_web_add_and_commit {
-	my $message = "Add a page via VCS API";
-	writefile('test1.mdwn', $config{srcdir}, readfile("t/test1.mdwn"));
-	IkiWiki::rcs_add("test1.mdwn");
-	IkiWiki::rcs_commit(
-		file => "test1.mdwn",
-		message => $message,
-		token => "moo",
-	);
-
-	my @changes = IkiWiki::rcs_recentchanges(3);
-	is(
-		$#changes,
-		0,
-		q{1 total commit},
-	);
-	is(
-		$changes[0]{message}[0]{"line"},
-		$message,
-		q{first line of most recent commit message matches},
-	);
-	is(
-		$changes[0]{pages}[0]{"page"},
-		"test1",
-		q{first pagename from most recent commit matches},
-	);
-
-	# 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
+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_manual_add_and_commit {
-	my $message = "Add a page via CVS directly";
-	writefile('test2.mdwn', $config{srcdir}, readfile("t/test2.mdwn"));
-	system "cd $config{srcdir}"
-		. " && cvs add test2.mdwn >/dev/null 2>&1";
-	system "cd $config{srcdir}"
-		. " && cvs commit -m \"$message\" test2.mdwn >/dev/null";
-
-	my @changes = IkiWiki::rcs_recentchanges(3);
-	is(
-		$#changes,
-		0,
-		q{1 total commit},
-	);
-	is(
-		$changes[0]{message}[0]{"line"},
-		$message,
-		q{first line of most recent commit message matches},
-	);
-	is(
-		$changes[0]{pages}[0]{"page"},
-		"test2",
-		q{first pagename from most recent commit matches},
-	);
-
-	# 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?
-}
-
 sub test_chdir_magic {
-	# cvs.pm operations are always occurring inside $config{srcdir}
-	# other ikiwiki operations are occurring wherever, and are unaffected
 	# when are we bothering with "local $CWD" and when aren't we?
 }
 
-
-# tests for VCS API calls:
-
-sub test_genwrapper {
-	# testable directly? affects rcs_add, but are we exercising this?
-}
-
-sub test_checkconfig {
-	# undef cvspath, expect "ikiwiki"
-	# define cvspath normally, get it back
-	# define cvspath in a subdir, get it back?
-	# define cvspath with extra slashes, get sanitized version back
-	# - yoink test_extra_path_slashes
-	# undef cvs_wrapper, expect $config{wrappers} same size as before
-
-	my $initial_cvspath = $config{cvspath};
-	$config{cvspath} = "/ikiwiki//";
-	IkiWiki::checkconfig();
-	is(
-		$config{cvspath},
-		$initial_cvspath,
-		q{rcs_recentchanges assumes checkconfig has sanitized cvspath},
-	);
-}
-
-sub test_getsetup {
-	# anything worth testing?
-}
-
 sub test_cvs_info {
 	# inspect "Repository revision" (used in code)
 	# inspect "Sticky Options" (used in tests to verify existence of "-kb")
@@ -249,12 +51,14 @@ sub test_cvs_run_cvs {
 	# 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?)
 }
 
@@ -287,6 +91,60 @@ sub test_cvs_is_controlling {
 	# - 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?
@@ -297,6 +155,11 @@ sub test_rcs_prepedit {
 	# 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 {
@@ -310,7 +173,8 @@ sub test_rcs_commit {
 	# - 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} "
-	# seeing File::chdir errors on commit?
+
+	# XXX commit can fail due to "could not open lock file"
 }
 
 sub test_rcs_commit_staged {
@@ -319,41 +183,130 @@ sub test_rcs_commit_staged {
 }
 
 sub test_rcs_add {
-	my $dir1 = "test3";
-	my $dir2 = "test4/test5";
-	ok(
-		mkdir($config{srcdir} . "/$dir1"),
-		qq{can make $dir1},
+	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 => "shouldn't happen",
+		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);
 
-	# can it assume we're under CVS control? or must it check?
-	# add a top-level text file
-	# - rcs_commit it
-	# - inspect recentchanges: new change, no -kb
-	# add a top-level dir
-	# - test mustn't hang (does it hang if we comment out genwrapper?)
-	# - inspect recentchanges: no new change
-	# - rcs_commit it
-	# - reinspect recentchanges: still no new change
-	# add a text file in that dir
-	# - rcs_commit_staged
-	# - inspect recentchanges: new change, no -kb
-	# add a top-level dir + add a binary file in it
-	# - rcs_commit_staged
-	# - inspect recentchanges: new change, yes -kb
-	# add a top-level dir + subdir + add one text and one binary file in it
-	# - rcs_commit_staged
-	# - inspect recentchanges: one new change, two files, one -kb, one not
+	# 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
+	# - ?
 
-	# extract method: filetype-guessing
-	# add a binary file, remove it, add a text file by same name, no -kb?
-	# add a text file, remove it, add a binary file by same name, -kb?
+	# can it assume we're under CVS control? or must it check?
 }
 
 sub test_rcs_remove {
@@ -381,6 +334,27 @@ sub test_rcs_rename {
 }
 
 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
@@ -395,9 +369,67 @@ sub test_rcs_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?
-	# in list context, return all lines (with \n), up to $maxlines if set
-	# in scalar context, return the whole diff, up to $maxlines if set
 }
 
 sub test_rcs_getctime {
@@ -415,7 +447,10 @@ sub test_rcs_getmtime {
 }
 
 sub test_rcs_receive {
-	pass(q{rcs_receive doesn't make sense for CVS});
+	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 {
@@ -426,6 +461,11 @@ sub test_rcs_preprevert {
 }
 
 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
@@ -443,3 +483,226 @@ sub main {
 }
 
 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 (@required_modules) {
+		eval qq{use $module};
+		return plan(skip_all => "$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();
+}
+
+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}";};
+}