/
usr
/
local
/
share
/
man
/
man3
/
/usr/local/share/man/man3
mkdir
upload
Name
Size
Mode
Actions
App::Prove.3pm
10508
0444
edit
dl
rm
App::Prove::State.3pm
6005
0444
edit
dl
rm
App::Prove::State::Result.3pm
5619
0444
edit
dl
rm
App::Prove::State::Result::Test.3pm
5051
0444
edit
dl
rm
AppConfig.3pm
35289
0444
edit
dl
rm
AppConfig::Args.3pm
7992
0444
edit
dl
rm
AppConfig::CGI.3pm
6609
0444
edit
dl
rm
AppConfig::File.3pm
12614
0444
edit
dl
rm
AppConfig::Getopt.3pm
7444
0444
edit
dl
rm
AppConfig::State.3pm
24972
0444
edit
dl
rm
AppConfig::Sys.3pm
6695
0444
edit
dl
rm
Archive::Tar.3pm
44061
0444
edit
dl
rm
Archive::Tar::File.3pm
11083
0444
edit
dl
rm
Archive::Zip.3pm
69985
0444
edit
dl
rm
Archive::Zip::FAQ.3pm
18437
0444
edit
dl
rm
Archive::Zip::MemberRead.3pm
6734
0444
edit
dl
rm
Archive::Zip::Tree.3pm
2875
0444
edit
dl
rm
B::COW.3pm
5163
0444
edit
dl
rm
Canary::Stability.3pm
3727
0444
edit
dl
rm
CDB_File.3pm
14318
0444
edit
dl
rm
common::sense.3pm
0
0444
edit
dl
rm
Compress::Raw::Bzip2.3pm
13463
0444
edit
dl
rm
Compress::Raw::Zlib.3pm
42082
0444
edit
dl
rm
Compress::Zlib.3pm
38719
0444
edit
dl
rm
CPAN::Meta.3pm
15923
0444
edit
dl
rm
CPAN::Meta::Converter.3pm
6594
0444
edit
dl
rm
CPAN::Meta::Feature.3pm
4322
0444
edit
dl
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CPAN::Meta::History.3pm
7855
0444
edit
dl
rm
CPAN::Meta::History::Meta_1_0.3pm
9973
0444
edit
dl
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CPAN::Meta::History::Meta_1_1.3pm
12410
0444
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dl
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CPAN::Meta::History::Meta_1_2.3pm
22224
0444
edit
dl
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CPAN::Meta::History::Meta_1_3.3pm
23974
0444
edit
dl
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CPAN::Meta::History::Meta_1_4.3pm
24565
0444
edit
dl
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CPAN::Meta::Merge.3pm
5285
0444
edit
dl
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CPAN::Meta::Prereqs.3pm
7380
0444
edit
dl
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CPAN::Meta::Requirements.3pm
12308
0444
edit
dl
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CPAN::Meta::Spec.3pm
45592
0444
edit
dl
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CPAN::Meta::Validator.3pm
4215
0444
edit
dl
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CPAN::Meta::YAML.3pm
4230
0444
edit
dl
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Crypt::OpenSSL::Random.3pm
5634
0444
edit
dl
rm
Curses.3pm
37580
0444
edit
dl
rm
Curses::UI.3pm
15619
0444
edit
dl
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Curses::UI::Buttonbox.3pm
8908
0444
edit
dl
rm
Curses::UI::Calendar.3pm
8203
0444
edit
dl
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Curses::UI::Checkbox.3pm
6509
0444
edit
dl
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Curses::UI::Color.3pm
5903
0444
edit
dl
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Curses::UI::Common.3pm
6498
0444
edit
dl
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Curses::UI::Container.3pm
9041
0444
edit
dl
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Curses::UI::Dialog::Basic.3pm
5213
0444
edit
dl
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Curses::UI::Dialog::Calendar.3pm
4761
0444
edit
dl
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Curses::UI::Dialog::Dirbrowser.3pm
5369
0444
edit
dl
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Curses::UI::Dialog::Error.3pm
4307
0444
edit
dl
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Curses::UI::Dialog::Filebrowser.3pm
6889
0444
edit
dl
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Curses::UI::Dialog::Progress.3pm
5774
0444
edit
dl
rm
Curses::UI::Dialog::Question.3pm
5277
0444
edit
dl
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Curses::UI::Dialog::Status.3pm
4765
0444
edit
dl
rm
Curses::UI::Label.3pm
7333
0444
edit
dl
rm
Curses::UI::Listbox.3pm
11988
0444
edit
dl
rm
Curses::UI::Menubar.3pm
8110
0444
edit
dl
rm
Curses::UI::Notebook.3pm
9140
0444
edit
dl
rm
Curses::UI::PasswordEntry.3pm
3743
0444
edit
dl
rm
Curses::UI::Popupmenu.3pm
7431
0444
edit
dl
rm
Curses::UI::Progressbar.3pm
5891
0444
edit
dl
rm
Curses::UI::Radiobuttonbox.3pm
4069
0444
edit
dl
rm
Curses::UI::Searchable.3pm
6668
0444
edit
dl
rm
Curses::UI::TextEditor.3pm
14171
0444
edit
dl
rm
Curses::UI::TextEntry.3pm
3623
0444
edit
dl
rm
Curses::UI::TextViewer.3pm
3670
0444
edit
dl
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Curses::UI::Tutorial.3pm
8555
0444
edit
dl
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Curses::UI::Widget.3pm
25675
0444
edit
dl
rm
Curses::UI::Window.3pm
5084
0444
edit
dl
rm
Cwd.3pm
7183
0444
edit
dl
rm
Date::Format.3pm
7291
0444
edit
dl
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Date::Language.3pm
3809
0444
edit
dl
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Date::Language::Bulgarian.3pm
3675
0444
edit
dl
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Date::Language::Hungarian.3pm
3091
0444
edit
dl
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Date::Parse.3pm
5402
0444
edit
dl
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Digest::SHA.3pm
25759
0444
edit
dl
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Expect.3pm
60229
0444
edit
dl
rm
ExtUtils::CBuilder.3pm
11923
0444
edit
dl
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ExtUtils::CBuilder::Platform::Windows.3pm
3117
0444
edit
dl
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ExtUtils::Command.3pm
5942
0444
edit
dl
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ExtUtils::Command::MM.3pm
5723
0444
edit
dl
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ExtUtils::Liblist.3pm
12679
0444
edit
dl
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ExtUtils::MakeMaker.3pm
79357
0444
edit
dl
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ExtUtils::MakeMaker::Config.3pm
2587
0444
edit
dl
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ExtUtils::MakeMaker::FAQ.3pm
26829
0444
edit
dl
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ExtUtils::MakeMaker::Locale.3pm
11168
0444
edit
dl
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ExtUtils::MakeMaker::Tutorial.3pm
8389
0444
edit
dl
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ExtUtils::Manifest.3pm
11961
0444
edit
dl
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ExtUtils::Mkbootstrap.3pm
3459
0444
edit
dl
rm
ExtUtils::Mksymlists.3pm
6699
0444
edit
dl
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ExtUtils::MM.3pm
2829
0444
edit
dl
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ExtUtils::MM_AIX.3pm
3044
0444
edit
dl
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ExtUtils::MM_Any.3pm
31129
0444
edit
dl
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ExtUtils::MM_BeOS.3pm
2798
0444
edit
dl
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ExtUtils::MM_Cygwin.3pm
3569
0444
edit
dl
rm
ExtUtils::MM_Darwin.3pm
2688
0444
edit
dl
rm
ExtUtils::MM_DOS.3pm
3021
0444
edit
dl
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ExtUtils::MM_MacOS.3pm
2987
0444
edit
dl
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ExtUtils::MM_NW5.3pm
3200
0444
edit
dl
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ExtUtils::MM_OS2.3pm
2886
0444
edit
dl
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ExtUtils::MM_QNX.3pm
2942
0444
edit
dl
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ExtUtils::MM_Unix.3pm
21419
0444
edit
dl
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ExtUtils::MM_UWIN.3pm
3051
0444
edit
dl
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ExtUtils::MM_VMS.3pm
14900
0444
edit
dl
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ExtUtils::MM_VOS.3pm
2926
0444
edit
dl
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ExtUtils::MM_Win32.3pm
5919
0444
edit
dl
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ExtUtils::MM_Win95.3pm
3276
0444
edit
dl
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ExtUtils::MY.3pm
2764
0444
edit
dl
rm
ExtUtils::testlib.3pm
2690
0444
edit
dl
rm
File::GlobMapper.3pm
11447
0444
edit
dl
rm
File::HomeDir.3pm
18212
0444
edit
dl
rm
File::HomeDir::Darwin.3pm
3232
0444
edit
dl
rm
File::HomeDir::Darwin::Carbon.3pm
3517
0444
edit
dl
rm
File::HomeDir::Darwin::Cocoa.3pm
3446
0444
edit
dl
rm
File::HomeDir::Driver.3pm
3101
0444
edit
dl
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File::HomeDir::FreeDesktop.3pm
3487
0444
edit
dl
rm
File::HomeDir::MacOS9.3pm
3499
0444
edit
dl
rm
File::HomeDir::Test.3pm
3534
0444
edit
dl
rm
File::HomeDir::Unix.3pm
3638
0444
edit
dl
rm
File::HomeDir::Windows.3pm
4891
0444
edit
dl
rm
File::Path.3pm
31030
0444
edit
dl
rm
File::Slurp.3pm
23626
0444
edit
dl
rm
File::Spec.3pm
13784
0444
edit
dl
rm
File::Spec::AmigaOS.3pm
2826
0444
edit
dl
rm
File::Spec::Cygwin.3pm
3957
0444
edit
dl
rm
File::Spec::Epoc.3pm
3251
0444
edit
dl
rm
File::Spec::Functions.3pm
3799
0444
edit
dl
rm
File::Spec::Mac.3pm
18664
0444
edit
dl
rm
File::Spec::OS2.3pm
3118
0444
edit
dl
rm
File::Spec::Unix.3pm
9837
0444
edit
dl
rm
File::Spec::VMS.3pm
6389
0444
edit
dl
rm
File::Spec::Win32.3pm
6451
0444
edit
dl
rm
File::Temp.3pm
36799
0444
edit
dl
rm
File::Which.3pm
9746
0444
edit
dl
rm
Getopt::Long.3pm
52647
0444
edit
dl
rm
HDB.3pm
10947
0444
edit
dl
rm
HDB::CMDS.3pm
18894
0444
edit
dl
rm
HDB::Encode.3pm
7863
0444
edit
dl
rm
HDB::Object.3pm
10057
0444
edit
dl
rm
HTML::AsSubs.3pm
8586
0444
edit
dl
rm
HTML::Element.3pm
70793
0444
edit
dl
rm
HTML::Element::traverse.3pm
15984
0444
edit
dl
rm
HTML::Form.3pm
28158
0444
edit
dl
rm
HTML::Parse.3pm
8277
0444
edit
dl
rm
HTML::Tree.3pm
9982
0444
edit
dl
rm
HTML::Tree::AboutObjects.3pm
37918
0444
edit
dl
rm
HTML::Tree::AboutTrees.3pm
58534
0444
edit
dl
rm
HTML::Tree::Scanning.3pm
34385
0444
edit
dl
rm
HTML::TreeBuilder.3pm
30138
0444
edit
dl
rm
HTTP::Tiny.3pm
27709
0444
edit
dl
rm
IO::AtomicFile.3pm
5381
0444
edit
dl
rm
IO::Compress::Base.3pm
3506
0444
edit
dl
rm
IO::Compress::Bzip2.3pm
23260
0444
edit
dl
rm
IO::Compress::Deflate.3pm
26768
0444
edit
dl
rm
IO::Compress::FAQ.3pm
26718
0444
edit
dl
rm
IO::Compress::Gzip.3pm
34489
0444
edit
dl
rm
IO::Compress::RawDeflate.3pm
27134
0444
edit
dl
rm
IO::Compress::Zip.3pm
40870
0444
edit
dl
rm
IO::InnerFile.3pm
6035
0444
edit
dl
rm
IO::Lines.3pm
3783
0444
edit
dl
rm
IO::Pty.3pm
8579
0444
edit
dl
rm
IO::Scalar.3pm
10679
0444
edit
dl
rm
IO::ScalarArray.3pm
10528
0444
edit
dl
rm
IO::Stringy.3pm
4049
0444
edit
dl
rm
IO::Tty.3pm
8348
0444
edit
dl
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IO::Tty::Constant.3pm
10012
0444
edit
dl
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IO::Uncompress::AnyInflate.3pm
32800
0444
edit
dl
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IO::Uncompress::AnyUncompress.3pm
30767
0444
edit
dl
rm
IO::Uncompress::Base.3pm
3518
0444
edit
dl
rm
IO::Uncompress::Bunzip2.3pm
29171
0444
edit
dl
rm
IO::Uncompress::Gunzip.3pm
31719
0444
edit
dl
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IO::Uncompress::Inflate.3pm
29915
0444
edit
dl
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IO::Uncompress::RawInflate.3pm
29563
0444
edit
dl
rm
IO::Uncompress::Unzip.3pm
31279
0444
edit
dl
rm
IO::Wrap.3pm
10664
0444
edit
dl
rm
IO::WrapTie.3pm
14987
0444
edit
dl
rm
JSON::PP.3pm
50080
0444
edit
dl
rm
JSON::PP::Boolean.3pm
2667
0444
edit
dl
rm
JSON::Syck.3pm
8094
0444
edit
dl
rm
JSON::XS.3pm
89037
0444
edit
dl
rm
JSON::XS::Boolean.3pm
2857
0444
edit
dl
rm
lib::core::only.3pm
5647
0444
edit
dl
rm
local::lib.3pm
31390
0444
edit
dl
rm
LWP.3pm
28506
0444
edit
dl
rm
LWP::Authen::Ntlm.3pm
7489
0444
edit
dl
rm
LWP::ConnCache.3pm
9967
0444
edit
dl
rm
LWP::Debug.3pm
5608
0444
edit
dl
rm
LWP::MemberMixin.3pm
4821
0444
edit
dl
rm
LWP::Protocol.3pm
8350
0444
edit
dl
rm
LWP::Protocol::https.3pm
5684
0444
edit
dl
rm
LWP::RobotUA.3pm
9022
0444
edit
dl
rm
LWP::Simple.3pm
9016
0444
edit
dl
rm
LWP::UserAgent.3pm
48156
0444
edit
dl
rm
lwpcook.3pm
14838
0444
edit
dl
rm
lwptut.3pm
32441
0444
edit
dl
rm
Module::Build.3pm
44563
0444
edit
dl
rm
Module::Build::API.3pm
89267
0444
edit
dl
rm
Module::Build::Authoring.3pm
17363
0444
edit
dl
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Module::Build::Base.3pm
5157
0444
edit
dl
rm
Module::Build::Bundling.3pm
9999
0444
edit
dl
rm
Module::Build::Compat.3pm
10885
0444
edit
dl
rm
Module::Build::ConfigData.3pm
7388
0444
edit
dl
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Module::Build::Cookbook.3pm
25946
0444
edit
dl
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Module::Build::Notes.3pm
4690
0444
edit
dl
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Module::Build::Platform::aix.3pm
4472
0444
edit
dl
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Module::Build::Platform::cygwin.3pm
4505
0444
edit
dl
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Module::Build::Platform::darwin.3pm
4491
0444
edit
dl
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Module::Build::Platform::Default.3pm
4490
0444
edit
dl
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Module::Build::Platform::MacOS.3pm
5398
0444
edit
dl
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Module::Build::Platform::os2.3pm
4474
0444
edit
dl
rm
Module::Build::Platform::Unix.3pm
4481
0444
edit
dl
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Module::Build::Platform::VMS.3pm
7885
0444
edit
dl
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Module::Build::Platform::VOS.3pm
4477
0444
edit
dl
rm
Module::Build::Platform::Windows.3pm
4529
0444
edit
dl
rm
Module::Build::PPMMaker.3pm
4886
0444
edit
dl
rm
Mozilla::CA.3pm
3571
0444
edit
dl
rm
Net::CIDR::Lite.3pm
9562
0444
edit
dl
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Net::Cmd.3pm
11545
0444
edit
dl
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Net::Config.3pm
8100
0444
edit
dl
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Net::Domain.3pm
3835
0444
edit
dl
rm
Net::FTP.3pm
27341
0444
edit
dl
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Net::FTP::dataconn.3pm
3979
0444
edit
dl
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Net::HTTP.3pm
16375
0444
edit
dl
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Net::HTTP::NB.3pm
5394
0444
edit
dl
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Net::HTTPS.3pm
5438
0444
edit
dl
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Net::IP.3pm
27697
0444
edit
dl
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Net::libnetFAQ.3pm
14746
0444
edit
dl
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Net::Netrc.3pm
6729
0444
edit
dl
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Net::NNTP.3pm
23193
0444
edit
dl
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Net::POP3.3pm
12259
0444
edit
dl
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Net::SMTP.3pm
18880
0444
edit
dl
rm
Net::SSLeay.3pm
349350
0444
edit
dl
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Net::SSLeay::Handle.3pm
9127
0444
edit
dl
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Net::Time.3pm
4524
0444
edit
dl
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ok.3pm
2851
0444
edit
dl
rm
Parse::CPAN::Meta.3pm
10187
0444
edit
dl
rm
POD2::DE::local::lib.3pm
22879
0444
edit
dl
rm
POD2::PT_BR::local::lib.3pm
22762
0444
edit
dl
rm
Socket.3pm
34078
0444
edit
dl
rm
Sub::Identify.3pm
5087
0444
edit
dl
rm
SUPER.3pm
7394
0444
edit
dl
rm
Switch.3pm
19014
0444
edit
dl
rm
TAP::Base.3pm
3401
0444
edit
dl
rm
TAP::Formatter::Base.3pm
6233
0444
edit
dl
rm
TAP::Formatter::Color.3pm
3717
0444
edit
dl
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TAP::Formatter::Console.3pm
2722
0444
edit
dl
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TAP::Formatter::Console::ParallelSession.3pm
3065
0444
edit
dl
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TAP::Formatter::Console::Session.3pm
2832
0444
edit
dl
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TAP::Formatter::File.3pm
2693
0444
edit
dl
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TAP::Formatter::File::Session.3pm
2847
0444
edit
dl
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TAP::Formatter::Session.3pm
3603
0444
edit
dl
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TAP::Harness.3pm
21300
0444
edit
dl
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TAP::Harness::Beyond.3pm
19118
0444
edit
dl
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TAP::Harness::Env.3pm
5467
0444
edit
dl
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TAP::Object.3pm
4497
0444
edit
dl
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TAP::Parser.3pm
42210
0444
edit
dl
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TAP::Parser::Aggregator.3pm
8023
0444
edit
dl
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TAP::Parser::Grammar.3pm
8647
0444
edit
dl
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TAP::Parser::Iterator.3pm
4993
0444
edit
dl
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TAP::Parser::Iterator::Array.3pm
3771
0444
edit
dl
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TAP::Parser::Iterator::Process.3pm
4601
0444
edit
dl
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TAP::Parser::Iterator::Stream.3pm
3712
0444
edit
dl
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TAP::Parser::IteratorFactory.3pm
6904
0444
edit
dl
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TAP::Parser::Multiplexer.3pm
4646
0444
edit
dl
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TAP::Parser::Result.3pm
7512
0444
edit
dl
rm
TAP::Parser::Result::Bailout.3pm
3293
0444
edit
dl
rm
TAP::Parser::Result::Comment.3pm
3118
0444
edit
dl
rm
TAP::Parser::Result::Plan.3pm
4173
0444
edit
dl
rm
TAP::Parser::Result::Pragma.3pm
3073
0444
edit
dl
rm
TAP::Parser::Result::Test.3pm
7114
0444
edit
dl
rm
TAP::Parser::Result::Unknown.3pm
2973
0444
edit
dl
rm
TAP::Parser::Result::Version.3pm
3154
0444
edit
dl
rm
TAP::Parser::Result::YAML.3pm
3086
0444
edit
dl
rm
TAP::Parser::ResultFactory.3pm
5523
0444
edit
dl
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TAP::Parser::Scheduler.3pm
8113
0444
edit
dl
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TAP::Parser::Scheduler::Job.3pm
4301
0444
edit
dl
rm
TAP::Parser::Scheduler::Spinner.3pm
3346
0444
edit
dl
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TAP::Parser::Source.3pm
8170
0444
edit
dl
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TAP::Parser::SourceHandler.3pm
7559
0444
edit
dl
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TAP::Parser::SourceHandler::Executable.3pm
5297
0444
edit
dl
rm
TAP::Parser::SourceHandler::File.3pm
4567
0444
edit
dl
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TAP::Parser::SourceHandler::Handle.3pm
4425
0444
edit
dl
rm
TAP::Parser::SourceHandler::Perl.3pm
6262
0444
edit
dl
rm
TAP::Parser::SourceHandler::RawTAP.3pm
4434
0444
edit
dl
rm
TAP::Parser::YAMLish::Reader.3pm
3995
0444
edit
dl
rm
TAP::Parser::YAMLish::Writer.3pm
4879
0444
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Edit:
/usr/local/share/man/man3/Test::Tutorial.3pm
(24261B)
.\" Automatically generated by Pod::Man 2.27 (Pod::Simple 3.28) .\" .\" Standard preamble: .\" ======================================================================== .de Sp \" Vertical space (when we can't use .PP) .if t .sp .5v .if n .sp .. .de Vb \" Begin verbatim text .ft CW .nf .ne \\$1 .. .de Ve \" End verbatim text .ft R .fi .. .\" Set up some character translations and predefined strings. \*(-- will .\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left .\" double quote, and \*(R" will give a right double quote. \*(C+ will .\" give a nicer C++. Capital omega is used to do unbreakable dashes and .\" therefore won't be available. \*(C` and \*(C' expand to `' in nroff, .\" nothing in troff, for use with C<>. .tr \(*W- .ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p' .ie n \{\ . ds -- \(*W- . ds PI pi . if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch . if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch . ds L" "" . ds R" "" . ds C` "" . ds C' "" 'br\} .el\{\ . ds -- \|\(em\| . ds PI \(*p . ds L" `` . ds R" '' . ds C` . ds C' 'br\} .\" .\" Escape single quotes in literal strings from groff's Unicode transform. .ie \n(.g .ds Aq \(aq .el .ds Aq ' .\" .\" If the F register is turned on, we'll generate index entries on stderr for .\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index .\" entries marked with X<> in POD. Of course, you'll have to process the .\" output yourself in some meaningful fashion. .\" .\" Avoid warning from groff about undefined register 'F'. .de IX .. .nr rF 0 .if \n(.g .if rF .nr rF 1 .if (\n(rF:(\n(.g==0)) \{ . if \nF \{ . de IX . tm Index:\\$1\t\\n%\t"\\$2" .. . if !\nF==2 \{ . nr % 0 . nr F 2 . \} . \} .\} .rr rF .\" ======================================================================== .\" .IX Title "Test::Tutorial 3" .TH Test::Tutorial 3 "2016-10-20" "perl v5.16.3" "User Contributed Perl Documentation" .\" For nroff, turn off justification. Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH "NAME" Test::Tutorial \- A tutorial about writing really basic tests .SH "DESCRIPTION" .IX Header "DESCRIPTION" \&\fI\s-1AHHHHHHH\s0!!!! \s-1NOT TESTING\s0! Anything but testing! Beat me, whip me, send me to Detroit, but don't make me write tests!\fR .PP \&\fI*sob*\fR .PP \&\fIBesides, I don't know how to write the damned things.\fR .PP Is this you? Is writing tests right up there with writing documentation and having your fingernails pulled out? Did you open up a test and read .PP .Vb 1 \& ######## We start with some black magic .Ve .PP and decide that's quite enough for you? .PP It's ok. That's all gone now. We've done all the black magic for you. And here are the tricks... .SS "Nuts and bolts of testing." .IX Subsection "Nuts and bolts of testing." Here's the most basic test program. .PP .Vb 1 \& #!/usr/bin/perl \-w \& \& print "1..1\en"; \& \& print 1 + 1 == 2 ? "ok 1\en" : "not ok 1\en"; .Ve .PP Because 1 + 1 is 2, it prints: .PP .Vb 2 \& 1..1 \& ok 1 .Ve .PP What this says is: \f(CW1..1\fR \*(L"I'm going to run one test.\*(R" [1] \f(CW\*(C`ok 1\*(C'\fR \&\*(L"The first test passed\*(R". And that's about all magic there is to testing. Your basic unit of testing is the \fIok\fR. For each thing you test, an \f(CW\*(C`ok\*(C'\fR is printed. Simple. Test::Harness interprets your test results to determine if you succeeded or failed (more on that later). .PP Writing all these print statements rapidly gets tedious. Fortunately, there's Test::Simple. It has one function, \f(CW\*(C`ok()\*(C'\fR. .PP .Vb 1 \& #!/usr/bin/perl \-w \& \& use Test::Simple tests => 1; \& \& ok( 1 + 1 == 2 ); .Ve .PP That does the same thing as the previous code. \f(CW\*(C`ok()\*(C'\fR is the backbone of Perl testing, and we'll be using it instead of roll-your-own from here on. If \f(CW\*(C`ok()\*(C'\fR gets a true value, the test passes. False, it fails. .PP .Vb 1 \& #!/usr/bin/perl \-w \& \& use Test::Simple tests => 2; \& ok( 1 + 1 == 2 ); \& ok( 2 + 2 == 5 ); .Ve .PP From that comes: .PP .Vb 5 \& 1..2 \& ok 1 \& not ok 2 \& # Failed test (test.pl at line 5) \& # Looks like you failed 1 tests of 2. .Ve .PP \&\f(CW1..2\fR \*(L"I'm going to run two tests.\*(R" This number is a \fIplan\fR. It helps to ensure your test program ran all the way through and didn't die or skip some tests. \f(CW\*(C`ok 1\*(C'\fR \*(L"The first test passed.\*(R" \f(CW\*(C`not ok 2\*(C'\fR \*(L"The second test failed\*(R". Test::Simple helpfully prints out some extra commentary about your tests. .PP It's not scary. Come, hold my hand. We're going to give an example of testing a module. For our example, we'll be testing a date library, Date::ICal. It's on \s-1CPAN,\s0 so download a copy and follow along. [2] .SS "Where to start?" .IX Subsection "Where to start?" This is the hardest part of testing, where do you start? People often get overwhelmed at the apparent enormity of the task of testing a whole module. The best place to start is at the beginning. Date::ICal is an object-oriented module, and that means you start by making an object. Test \&\f(CW\*(C`new()\*(C'\fR. .PP .Vb 1 \& #!/usr/bin/perl \-w \& \& # assume these two lines are in all subsequent examples \& use strict; \& use warnings; \& \& use Test::Simple tests => 2; \& \& use Date::ICal; \& \& my $ical = Date::ICal\->new; # create an object \& ok( defined $ical ); # check that we got something \& ok( $ical\->isa(\*(AqDate::ICal\*(Aq) ); # and it\*(Aqs the right class .Ve .PP Run that and you should get: .PP .Vb 3 \& 1..2 \& ok 1 \& ok 2 .Ve .PP Congratulations! You've written your first useful test. .SS "Names" .IX Subsection "Names" That output isn't terribly descriptive, is it? When you have two tests you can figure out which one is #2, but what if you have 102 tests? .PP Each test can be given a little descriptive name as the second argument to \f(CW\*(C`ok()\*(C'\fR. .PP .Vb 1 \& use Test::Simple tests => 2; \& \& ok( defined $ical, \*(Aqnew() returned something\*(Aq ); \& ok( $ical\->isa(\*(AqDate::ICal\*(Aq), " and it\*(Aqs the right class" ); .Ve .PP Now you'll see: .PP .Vb 3 \& 1..2 \& ok 1 \- new() returned something \& ok 2 \- and it\*(Aqs the right class .Ve .SS "Test the manual" .IX Subsection "Test the manual" The simplest way to build up a decent testing suite is to just test what the manual says it does. [3] Let's pull something out of the \&\*(L"\s-1SYNOPSIS\*(R"\s0 in Date::ICal and test that all its bits work. .PP .Vb 1 \& #!/usr/bin/perl \-w \& \& use Test::Simple tests => 8; \& \& use Date::ICal; \& \& $ical = Date::ICal\->new( year => 1964, month => 10, day => 16, \& hour => 16, min => 12, sec => 47, \& tz => \*(Aq0530\*(Aq ); \& \& ok( defined $ical, \*(Aqnew() returned something\*(Aq ); \& ok( $ical\->isa(\*(AqDate::ICal\*(Aq), " and it\*(Aqs the right class" ); \& ok( $ical\->sec == 47, \*(Aq sec()\*(Aq ); \& ok( $ical\->min == 12, \*(Aq min()\*(Aq ); \& ok( $ical\->hour == 16, \*(Aq hour()\*(Aq ); \& ok( $ical\->day == 17, \*(Aq day()\*(Aq ); \& ok( $ical\->month == 10, \*(Aq month()\*(Aq ); \& ok( $ical\->year == 1964, \*(Aq year()\*(Aq ); .Ve .PP Run that and you get: .PP .Vb 11 \& 1..8 \& ok 1 \- new() returned something \& ok 2 \- and it\*(Aqs the right class \& ok 3 \- sec() \& ok 4 \- min() \& ok 5 \- hour() \& not ok 6 \- day() \& # Failed test (\- at line 16) \& ok 7 \- month() \& ok 8 \- year() \& # Looks like you failed 1 tests of 8. .Ve .PP Whoops, a failure! [4] Test::Simple helpfully lets us know on what line the failure occurred, but not much else. We were supposed to get 17, but we didn't. What did we get?? Dunno. You could re-run the test in the debugger or throw in some print statements to find out. .PP Instead, switch from Test::Simple to Test::More. Test::More does everything Test::Simple does, and more! In fact, Test::More does things \fIexactly\fR the way Test::Simple does. You can literally swap Test::Simple out and put Test::More in its place. That's just what we're going to do. .PP Test::More does more than Test::Simple. The most important difference at this point is it provides more informative ways to say \*(L"ok\*(R". Although you can write almost any test with a generic \f(CW\*(C`ok()\*(C'\fR, it can't tell you what went wrong. The \f(CW\*(C`is()\*(C'\fR function lets us declare that something is supposed to be the same as something else: .PP .Vb 1 \& use Test::More tests => 8; \& \& use Date::ICal; \& \& $ical = Date::ICal\->new( year => 1964, month => 10, day => 16, \& hour => 16, min => 12, sec => 47, \& tz => \*(Aq0530\*(Aq ); \& \& ok( defined $ical, \*(Aqnew() returned something\*(Aq ); \& ok( $ical\->isa(\*(AqDate::ICal\*(Aq), " and it\*(Aqs the right class" ); \& is( $ical\->sec, 47, \*(Aq sec()\*(Aq ); \& is( $ical\->min, 12, \*(Aq min()\*(Aq ); \& is( $ical\->hour, 16, \*(Aq hour()\*(Aq ); \& is( $ical\->day, 17, \*(Aq day()\*(Aq ); \& is( $ical\->month, 10, \*(Aq month()\*(Aq ); \& is( $ical\->year, 1964, \*(Aq year()\*(Aq ); .Ve .PP "Is \f(CW\*(C`$ical\->sec\*(C'\fR 47?\*(L" \*(R"Is \f(CW\*(C`$ical\->min\*(C'\fR 12?" With \f(CW\*(C`is()\*(C'\fR in place, you get more information: .PP .Vb 10 \& 1..8 \& ok 1 \- new() returned something \& ok 2 \- and it\*(Aqs the right class \& ok 3 \- sec() \& ok 4 \- min() \& ok 5 \- hour() \& not ok 6 \- day() \& # Failed test (\- at line 16) \& # got: \*(Aq16\*(Aq \& # expected: \*(Aq17\*(Aq \& ok 7 \- month() \& ok 8 \- year() \& # Looks like you failed 1 tests of 8. .Ve .PP Aha. \f(CW\*(C`$ical\->day\*(C'\fR returned 16, but we expected 17. A quick check shows that the code is working fine, we made a mistake when writing the tests. Change it to: .PP .Vb 1 \& is( $ical\->day, 16, \*(Aq day()\*(Aq ); .Ve .PP \&... and everything works. .PP Any time you're doing a \*(L"this equals that\*(R" sort of test, use \f(CW\*(C`is()\*(C'\fR. It even works on arrays. The test is always in scalar context, so you can test how many elements are in an array this way. [5] .PP .Vb 1 \& is( @foo, 5, \*(Aqfoo has 5 elements\*(Aq ); .Ve .SS "Sometimes the tests are wrong" .IX Subsection "Sometimes the tests are wrong" This brings up a very important lesson. Code has bugs. Tests are code. Ergo, tests have bugs. A failing test could mean a bug in the code, but don't discount the possibility that the test is wrong. .PP On the flip side, don't be tempted to prematurely declare a test incorrect just because you're having trouble finding the bug. Invalidating a test isn't something to be taken lightly, and don't use it as a cop out to avoid work. .SS "Testing lots of values" .IX Subsection "Testing lots of values" We're going to be wanting to test a lot of dates here, trying to trick the code with lots of different edge cases. Does it work before 1970? After 2038? Before 1904? Do years after 10,000 give it trouble? Does it get leap years right? We could keep repeating the code above, or we could set up a little try/expect loop. .PP .Vb 2 \& use Test::More tests => 32; \& use Date::ICal; \& \& my %ICal_Dates = ( \& # An ICal string And the year, month, day \& # hour, minute and second we expect. \& \*(Aq19971024T120000\*(Aq => # from the docs. \& [ 1997, 10, 24, 12, 0, 0 ], \& \*(Aq20390123T232832\*(Aq => # after the Unix epoch \& [ 2039, 1, 23, 23, 28, 32 ], \& \*(Aq19671225T000000\*(Aq => # before the Unix epoch \& [ 1967, 12, 25, 0, 0, 0 ], \& \*(Aq18990505T232323\*(Aq => # before the MacOS epoch \& [ 1899, 5, 5, 23, 23, 23 ], \& ); \& \& \& while( my($ical_str, $expect) = each %ICal_Dates ) { \& my $ical = Date::ICal\->new( ical => $ical_str ); \& \& ok( defined $ical, "new(ical => \*(Aq$ical_str\*(Aq)" ); \& ok( $ical\->isa(\*(AqDate::ICal\*(Aq), " and it\*(Aqs the right class" ); \& \& is( $ical\->year, $expect\->[0], \*(Aq year()\*(Aq ); \& is( $ical\->month, $expect\->[1], \*(Aq month()\*(Aq ); \& is( $ical\->day, $expect\->[2], \*(Aq day()\*(Aq ); \& is( $ical\->hour, $expect\->[3], \*(Aq hour()\*(Aq ); \& is( $ical\->min, $expect\->[4], \*(Aq min()\*(Aq ); \& is( $ical\->sec, $expect\->[5], \*(Aq sec()\*(Aq ); \& } .Ve .PP Now we can test bunches of dates by just adding them to \&\f(CW%ICal_Dates\fR. Now that it's less work to test with more dates, you'll be inclined to just throw more in as you think of them. Only problem is, every time we add to that we have to keep adjusting the \*(L"use Test::More tests => ##\*(R" line. That can rapidly get annoying. There are ways to make this work better. .PP First, we can calculate the plan dynamically using the \f(CW\*(C`plan()\*(C'\fR function. .PP .Vb 2 \& use Test::More; \& use Date::ICal; \& \& my %ICal_Dates = ( \& ...same as before... \& ); \& \& # For each key in the hash we\*(Aqre running 8 tests. \& plan tests => keys(%ICal_Dates) * 8; \& \& ...and then your tests... .Ve .PP To be even more flexible, use \f(CW\*(C`done_testing\*(C'\fR. This means we're just running some tests, don't know how many. [6] .PP .Vb 1 \& use Test::More; # instead of tests => 32 \& \& ... # tests here \& \& done_testing(); # reached the end safely .Ve .PP If you don't specify a plan, Test::More expects to see \f(CW\*(C`done_testing()\*(C'\fR before your program exits. It will warn you if you forget it. You can give \&\f(CW\*(C`done_testing()\*(C'\fR an optional number of tests you expected to run, and if the number ran differs, Test::More will give you another kind of warning. .SS "Informative names" .IX Subsection "Informative names" Take a look at the line: .PP .Vb 1 \& ok( defined $ical, "new(ical => \*(Aq$ical_str\*(Aq)" ); .Ve .PP We've added more detail about what we're testing and the ICal string itself we're trying out to the name. So you get results like: .PP .Vb 8 \& ok 25 \- new(ical => \*(Aq19971024T120000\*(Aq) \& ok 26 \- and it\*(Aqs the right class \& ok 27 \- year() \& ok 28 \- month() \& ok 29 \- day() \& ok 30 \- hour() \& ok 31 \- min() \& ok 32 \- sec() .Ve .PP If something in there fails, you'll know which one it was and that will make tracking down the problem easier. Try to put a bit of debugging information into the test names. .PP Describe what the tests test, to make debugging a failed test easier for you or for the next person who runs your test. .SS "Skipping tests" .IX Subsection "Skipping tests" Poking around in the existing Date::ICal tests, I found this in \&\fIt/01sanity.t\fR [7] .PP .Vb 1 \& #!/usr/bin/perl \-w \& \& use Test::More tests => 7; \& use Date::ICal; \& \& # Make sure epoch time is being handled sanely. \& my $t1 = Date::ICal\->new( epoch => 0 ); \& is( $t1\->epoch, 0, "Epoch time of 0" ); \& \& # XXX This will only work on unix systems. \& is( $t1\->ical, \*(Aq19700101Z\*(Aq, " epoch to ical" ); \& \& is( $t1\->year, 1970, " year()" ); \& is( $t1\->month, 1, " month()" ); \& is( $t1\->day, 1, " day()" ); \& \& # like the tests above, but starting with ical instead of epoch \& my $t2 = Date::ICal\->new( ical => \*(Aq19700101Z\*(Aq ); \& is( $t2\->ical, \*(Aq19700101Z\*(Aq, "Start of epoch in ICal notation" ); \& \& is( $t2\->epoch, 0, " and back to ICal" ); .Ve .PP The beginning of the epoch is different on most non-Unix operating systems [8]. Even though Perl smooths out the differences for the most part, certain ports do it differently. MacPerl is one off the top of my head. [9] Rather than putting a comment in the test and hoping someone will read the test while debugging the failure, we can explicitly say it's never going to work and skip the test. .PP .Vb 2 \& use Test::More tests => 7; \& use Date::ICal; \& \& # Make sure epoch time is being handled sanely. \& my $t1 = Date::ICal\->new( epoch => 0 ); \& is( $t1\->epoch, 0, "Epoch time of 0" ); \& \& SKIP: { \& skip(\*(Aqepoch to ICal not working on Mac OS\*(Aq, 6) \& if $^O eq \*(AqMacOS\*(Aq; \& \& is( $t1\->ical, \*(Aq19700101Z\*(Aq, " epoch to ical" ); \& \& is( $t1\->year, 1970, " year()" ); \& is( $t1\->month, 1, " month()" ); \& is( $t1\->day, 1, " day()" ); \& \& # like the tests above, but starting with ical instead of epoch \& my $t2 = Date::ICal\->new( ical => \*(Aq19700101Z\*(Aq ); \& is( $t2\->ical, \*(Aq19700101Z\*(Aq, "Start of epoch in ICal notation" ); \& \& is( $t2\->epoch, 0, " and back to ICal" ); \& } .Ve .PP A little bit of magic happens here. When running on anything but MacOS, all the tests run normally. But when on MacOS, \f(CW\*(C`skip()\*(C'\fR causes the entire contents of the \s-1SKIP\s0 block to be jumped over. It never runs. Instead, \&\f(CW\*(C`skip()\*(C'\fR prints special output that tells Test::Harness that the tests have been skipped. .PP .Vb 8 \& 1..7 \& ok 1 \- Epoch time of 0 \& ok 2 # skip epoch to ICal not working on MacOS \& ok 3 # skip epoch to ICal not working on MacOS \& ok 4 # skip epoch to ICal not working on MacOS \& ok 5 # skip epoch to ICal not working on MacOS \& ok 6 # skip epoch to ICal not working on MacOS \& ok 7 # skip epoch to ICal not working on MacOS .Ve .PP This means your tests won't fail on MacOS. This means fewer emails from MacPerl users telling you about failing tests that you know will never work. You've got to be careful with skip tests. These are for tests which don't work and \fInever will\fR. It is not for skipping genuine bugs (we'll get to that in a moment). .PP The tests are wholly and completely skipped. [10] This will work. .PP .Vb 2 \& SKIP: { \& skip("I don\*(Aqt wanna die!"); \& \& die, die, die, die, die; \& } .Ve .SS "Todo tests" .IX Subsection "Todo tests" While thumbing through the Date::ICal man page, I came across this: .PP .Vb 1 \& ical \& \& $ical_string = $ical\->ical; \& \& Retrieves, or sets, the date on the object, using any \& valid ICal date/time string. .Ve .PP \&\*(L"Retrieves or sets\*(R". Hmmm. I didn't see a test for using \f(CW\*(C`ical()\*(C'\fR to set the date in the Date::ICal test suite. So I wrote one: .PP .Vb 2 \& use Test::More tests => 1; \& use Date::ICal; \& \& my $ical = Date::ICal\->new; \& $ical\->ical(\*(Aq20201231Z\*(Aq); \& is( $ical\->ical, \*(Aq20201231Z\*(Aq, \*(AqSetting via ical()\*(Aq ); .Ve .PP Run that. I saw: .PP .Vb 6 \& 1..1 \& not ok 1 \- Setting via ical() \& # Failed test (\- at line 6) \& # got: \*(Aq20010814T233649Z\*(Aq \& # expected: \*(Aq20201231Z\*(Aq \& # Looks like you failed 1 tests of 1. .Ve .PP Whoops! Looks like it's unimplemented. Assume you don't have the time to fix this. [11] Normally, you'd just comment out the test and put a note in a todo list somewhere. Instead, explicitly state \*(L"this test will fail\*(R" by wrapping it in a \f(CW\*(C`TODO\*(C'\fR block: .PP .Vb 1 \& use Test::More tests => 1; \& \& TODO: { \& local $TODO = \*(Aqical($ical) not yet implemented\*(Aq; \& \& my $ical = Date::ICal\->new; \& $ical\->ical(\*(Aq20201231Z\*(Aq); \& \& is( $ical\->ical, \*(Aq20201231Z\*(Aq, \*(AqSetting via ical()\*(Aq ); \& } .Ve .PP Now when you run, it's a little different: .PP .Vb 4 \& 1..1 \& not ok 1 \- Setting via ical() # TODO ical($ical) not yet implemented \& # got: \*(Aq20010822T201551Z\*(Aq \& # expected: \*(Aq20201231Z\*(Aq .Ve .PP Test::More doesn't say \*(L"Looks like you failed 1 tests of 1\*(R". That '# \&\s-1TODO\s0' tells Test::Harness \*(L"this is supposed to fail\*(R" and it treats a failure as a successful test. You can write tests even before you've fixed the underlying code. .PP If a \s-1TODO\s0 test passes, Test::Harness will report it \*(L"\s-1UNEXPECTEDLY SUCCEEDED\*(R". \s0 When that happens, remove the \s-1TODO\s0 block with \f(CW\*(C`local $TODO\*(C'\fR and turn it into a real test. .SS "Testing with taint mode." .IX Subsection "Testing with taint mode." Taint mode is a funny thing. It's the globalest of all global features. Once you turn it on, it affects \fIall\fR code in your program and \fIall\fR modules used (and all the modules they use). If a single piece of code isn't taint clean, the whole thing explodes. With that in mind, it's very important to ensure your module works under taint mode. .PP It's very simple to have your tests run under taint mode. Just throw a \f(CW\*(C`\-T\*(C'\fR into the \f(CW\*(C`#!\*(C'\fR line. Test::Harness will read the switches in \f(CW\*(C`#!\*(C'\fR and use them to run your tests. .PP .Vb 1 \& #!/usr/bin/perl \-Tw \& \& ...test normally here... .Ve .PP When you say \f(CW\*(C`make test\*(C'\fR it will run with taint mode on. .SH "FOOTNOTES" .IX Header "FOOTNOTES" .IP "1." 4 The first number doesn't really mean anything, but it has to be 1. It's the second number that's important. .IP "2." 4 For those following along at home, I'm using version 1.31. It has some bugs, which is good \*(-- we'll uncover them with our tests. .IP "3." 4 You can actually take this one step further and test the manual itself. Have a look at Test::Inline (formerly Pod::Tests). .IP "4." 4 Yes, there's a mistake in the test suite. What! Me, contrived? .IP "5." 4 We'll get to testing the contents of lists later. .IP "6." 4 But what happens if your test program dies halfway through?! Since we didn't say how many tests we're going to run, how can we know it failed? No problem, Test::More employs some magic to catch that death and turn the test into a failure, even if every test passed up to that point. .IP "7." 4 I cleaned it up a little. .IP "8." 4 Most Operating Systems record time as the number of seconds since a certain date. This date is the beginning of the epoch. Unix's starts at midnight January 1st, 1970 \s-1GMT.\s0 .IP "9." 4 MacOS's epoch is midnight January 1st, 1904. \s-1VMS\s0's is midnight, November 17th, 1858, but vmsperl emulates the Unix epoch so it's not a problem. .IP "10." 4 As long as the code inside the \s-1SKIP\s0 block at least compiles. Please don't ask how. No, it's not a filter. .IP "11." 4 Do \s-1NOT\s0 be tempted to use \s-1TODO\s0 tests as a way to avoid fixing simple bugs! .SH "AUTHORS" .IX Header "AUTHORS" Michael G Schwern <schwern@pobox.com> and the perl-qa dancers! .SH "MAINTAINERS" .IX Header "MAINTAINERS" .IP "Chad Granum <exodist@cpan.org>" 4 .IX Item "Chad Granum <exodist@cpan.org>" .SH "COPYRIGHT" .IX Header "COPYRIGHT" Copyright 2001 by Michael G Schwern <schwern@pobox.com>. .PP This documentation is free; you can redistribute it and/or modify it under the same terms as Perl itself. .PP Irrespective of its distribution, all code examples in these files are hereby placed into the public domain. You are permitted and encouraged to use this code in your own programs for fun or for profit as you see fit. A simple comment in the code giving credit would be courteous but is not required.
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