Import original source of String-Trim 0.005

33 files changed, 1280 insertions, 0 deletions

diff --git a/Changes b/Changes
new file mode 100644
index 0000000..2f9f285
--- /dev/null
+++ b/Changes
@@ -0,0 +1,17 @@
+Revision history for Perl module String-Trim
+
+0.005     2011-04-21
+    * Added tests
+
+0.004     2010-12-03
+    * Require Exporter 5.57
+    * Remove trim2, which was added accidentally
+
+0.003     2010-11-30
+    * Require Test::Buider 0.94 along with Test::More 0.94
+
+0.002     2010-11-28
+    * Use Perl_5 license: GPL+Artistic
+
+0.001     2010-11-26
+    * Initial release
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..aadf12b
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,377 @@
+This software is copyright (c) 2010 by Mike Doherty.
+
+This is free software; you can redistribute it and/or modify it under
+the same terms as the Perl 5 programming language system itself.
+
+Terms of the Perl programming language system itself
+
+a) the GNU General Public License as published by the Free
+   Software Foundation; either version 1, or (at your option) any
+   later version, or
+b) the "Artistic License"
+
+--- The GNU General Public License, Version 1, February 1989 ---
+
+This software is Copyright (c) 2010 by Mike Doherty.
+
+This is free software, licensed under:
+
+  The GNU General Public License, Version 1, February 1989
+
+		    GNU GENERAL PUBLIC LICENSE
+		     Version 1, February 1989
+
+ Copyright (C) 1989 Free Software Foundation, Inc.
+                59 Temple Place, Suite 330, Boston, MA 02111-1307, USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+			    Preamble
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+The hypothetical commands `show w' and `show c' should show the
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+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
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+That's all there is to it!
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+
+--- The Artistic License 1.0 ---
+
+This software is Copyright (c) 2010 by Mike Doherty.
+
+This is free software, licensed under:
+
+  The Artistic License 1.0
+
+The Artistic License
+
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+The intent of this document is to state the conditions under which a Package
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+1. You may make and give away verbatim copies of the source form of the
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+2. You may apply bug fixes, portability fixes and other modifications derived
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+3. You may otherwise modify your copy of this Package in any way, provided that
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+4. You may distribute the programs of this Package in object code or executable
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+  d) make other distribution arrangements with the Copyright Holder.
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+5. You may charge a reasonable copying fee for any distribution of this
+Package.  You may charge any fee you choose for support of this Package. You
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+6. The scripts and library files supplied as input to or produced as output
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+9. THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
+WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
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+The End
+
diff --git a/MANIFEST b/MANIFEST
new file mode 100644
index 0000000..158934c
--- /dev/null
+++ b/MANIFEST
@@ -0,0 +1,33 @@
+Changes
+LICENSE
+MANIFEST
+META.json
+META.yml
+Makefile.PL
+README
+lib/String/Trim.pm
+t/00-compile.t
+t/00-use.t
+t/01-string.t
+t/02-undef.t
+t/03-array.t
+t/04-arrayref.t
+t/05-default.t
+t/06-hash.t
+t/07-hashref.t
+xt/author/critic.t
+xt/release/cpan-changes.t
+xt/release/dist-manifest.t
+xt/release/distmeta.t
+xt/release/eol.t
+xt/release/has-version.t
+xt/release/kwalitee.t
+xt/release/meta-json.t
+xt/release/minimum-version.t
+xt/release/no-tabs.t
+xt/release/pod-coverage.t
+xt/release/pod-linkcheck.t
+xt/release/pod-syntax.t
+xt/release/portability.t
+xt/release/synopsis.t
+xt/release/unused-vars.t
diff --git a/META.json b/META.json
new file mode 100644
index 0000000..b09c94f
--- /dev/null
+++ b/META.json
@@ -0,0 +1,54 @@
+{
+   "abstract" : "trim whitespace from your strings",
+   "author" : [
+      "Mike Doherty <doherty@cpan.org>",
+      "Jeff Pinyan <pinyan@cpan.org>",
+      "Rob Kinyon <rkinyon@cpan.org>",
+      "\u00ce\u0091\u00cf\u0081\u00ce\u00b9\u00cf\u0083\u00cf\u0084\u00ce\u00bf\u00cf\u0084\u00ce\u00ad\u00ce\u00bb\u00ce\u00b7\u00cf\u0082 \u00ce\u00a0\u00ce\u00b1\u00ce\u00b3\u00ce\u00ba\u00ce\u00b1\u00ce\u00bb\u00cf\u0084\u00ce\u00b6\u00ce\u00ae\u00cf\u0082 (Aristotle Pagaltzis) <aristotle@cpan.org>"
+   ],
+   "dynamic_config" : 0,
+   "generated_by" : "Dist::Zilla version 4.200004, CPAN::Meta::Converter version 2.110440",
+   "license" : [
+      "perl_5"
+   ],
+   "meta-spec" : {
+      "url" : "http://search.cpan.org/perldoc?CPAN::Meta::Spec",
+      "version" : "2"
+   },
+   "name" : "String-Trim",
+   "prereqs" : {
+      "configure" : {
+         "requires" : {
+            "ExtUtils::MakeMaker" : "6.31"
+         }
+      },
+      "runtime" : {
+         "requires" : {
+            "Exporter" : "5.57",
+            "perl" : "5.006"
+         }
+      },
+      "test" : {
+         "requires" : {
+            "Data::Dumper" : 0,
+            "File::Find" : 0,
+            "File::Temp" : 0,
+            "Test::Builder" : "0.94",
+            "Test::More" : "0.94"
+         }
+      }
+   },
+   "release_status" : "stable",
+   "resources" : {
+      "bugtracker" : {
+         "web" : "https://github.com/doherty/String-Trim/issues"
+      },
+      "repository" : {
+         "type" : "git",
+         "url" : "git://github.com/doherty/String-Trim.git",
+         "web" : "https://github.com/doherty/String-Trim"
+      }
+   },
+   "version" : "0.005"
+}
+
diff --git a/META.yml b/META.yml
new file mode 100644
index 0000000..eec059c
--- /dev/null
+++ b/META.yml
@@ -0,0 +1,29 @@
+---
+abstract: 'trim whitespace from your strings'
+author:
+  - 'Mike Doherty <doherty@cpan.org>'
+  - 'Jeff Pinyan <pinyan@cpan.org>'
+  - 'Rob Kinyon <rkinyon@cpan.org>'
+  - 'Αριστοτέλης Παγκαλτζής (Aristotle Pagaltzis) <aristotle@cpan.org>'
+build_requires:
+  Data::Dumper: 0
+  File::Find: 0
+  File::Temp: 0
+  Test::Builder: 0.94
+  Test::More: 0.94
+configure_requires:
+  ExtUtils::MakeMaker: 6.31
+dynamic_config: 0
+generated_by: 'Dist::Zilla version 4.200004, CPAN::Meta::Converter version 2.110440'
+license: perl
+meta-spec:
+  url: http://module-build.sourceforge.net/META-spec-v1.4.html
+  version: 1.4
+name: String-Trim
+requires:
+  Exporter: 5.57
+  perl: 5.006
+resources:
+  bugtracker: https://github.com/doherty/String-Trim/issues
+  repository: git://github.com/doherty/String-Trim.git
+version: 0.005
diff --git a/Makefile.PL b/Makefile.PL
new file mode 100644
index 0000000..07e4570
--- /dev/null
+++ b/Makefile.PL
@@ -0,0 +1,57 @@
+
+use strict;
+use warnings;
+
+BEGIN { require 5.006; }
+
+use ExtUtils::MakeMaker 6.31;
+
+
+
+my %WriteMakefileArgs = (
+  'ABSTRACT' => 'trim whitespace from your strings',
+  'AUTHOR' => 'Mike Doherty <doherty@cpan.org>, Jeff Pinyan <pinyan@cpan.org>, Rob Kinyon <rkinyon@cpan.org>, Αριστοτέλης Παγκαλτζής (Aristotle Pagaltzis) <aristotle@cpan.org>',
+  'BUILD_REQUIRES' => {
+    'Data::Dumper' => '0',
+    'File::Find' => '0',
+    'File::Temp' => '0',
+    'Test::Builder' => '0.94',
+    'Test::More' => '0.94'
+  },
+  'CONFIGURE_REQUIRES' => {
+    'ExtUtils::MakeMaker' => '6.31'
+  },
+  'DISTNAME' => 'String-Trim',
+  'EXE_FILES' => [],
+  'LICENSE' => 'perl',
+  'NAME' => 'String::Trim',
+  'PREREQ_PM' => {
+    'Exporter' => '5.57'
+  },
+  'VERSION' => '0.005',
+  'test' => {
+    'TESTS' => 't/*.t'
+  }
+);
+
+
+unless ( eval { ExtUtils::MakeMaker->VERSION(6.56) } ) {
+  my $br = delete $WriteMakefileArgs{BUILD_REQUIRES};
+  my $pp = $WriteMakefileArgs{PREREQ_PM};
+  for my $mod ( keys %$br ) {
+    if ( exists $pp->{$mod} ) {
+      $pp->{$mod} = $br->{$mod} if $br->{$mod} > $pp->{$mod};
+    }
+    else {
+      $pp->{$mod} = $br->{$mod};
+    }
+  }
+}
+
+delete $WriteMakefileArgs{CONFIGURE_REQUIRES}
+  unless eval { ExtUtils::MakeMaker->VERSION(6.52) };
+
+WriteMakefile(%WriteMakefileArgs);
+
+
+
diff --git a/README b/README
new file mode 100644
index 0000000..ce58774
--- /dev/null
+++ b/README
@@ -0,0 +1,92 @@
+NAME
+    String::Trim - trim whitespace from your strings
+
+VERSION
+    version 0.005
+
+SYNOPSIS
+        use String::Trim;
+
+        print "Do it? ";
+        trim(my $response = <>);
+        print "'$response'\n";
+
+DESCRIPTION
+    "String::Trim" trims whitespace off your strings. chomp trims only $/
+    (typically, that's newline), but "trim" will trim all leading and
+    trailing whitespace.
+
+FUNCTIONS
+  trim
+    Returns the string with all leading and trailing whitespace removed.
+    Trimming undef gives you undef. Alternatively, you can trim in-place.
+
+        my $var     = ' my string  ';
+        my $trimmed = trim($var);
+        # OR
+        trim($var);
+
+    "trim" also knows how to trim an array or arrayref:
+
+        my @to_trim = (' one ', ' two ', ' three ');
+        my @trimmed = trim(@to_trim);
+        # OR
+        trim(@to_trim);
+        # OR
+        my $trimmed = trim(\@to_trim);
+        # OR
+        trim(\@to_trim);
+
+RATIONALE
+    "trim" is often used by beginners, who may not understand how to spin
+    their own. While String::Util does have a "trim" function, it depends on
+    Debug::ShowStuff, which depends on Taint, which fails the test suite,
+    and doesn't appear to be maintained. This module installs, is actively
+    maintained, and has no non-core dependencies.
+
+    Other options include Text::Trim and String::Strip (which is implemented
+    in XS, and is therefore likely to be very fast, but requires a C
+    compiler).
+
+AVAILABILITY
+    The latest version of this module is available from the Comprehensive
+    Perl Archive Network (CPAN). Visit <http://www.perl.com/CPAN/> to find a
+    CPAN site near you, or see <http://search.cpan.org/dist/String-Trim/>.
+
+    The development version lives at <http://github.com/doherty/String-Trim>
+    and may be cloned from <git://github.com/doherty/String-Trim.git>.
+    Instead of sending patches, please fork this project using the standard
+    git and github infrastructure.
+
+SOURCE
+    The development version is on github at
+    <http://github.com/doherty/String-Trim> and may be cloned from
+    <git://github.com/doherty/String-Trim.git>
+
+BUGS AND LIMITATIONS
+    No bugs have been reported.
+
+    Please report any bugs or feature requests through the web interface at
+    <https://github.com/doherty/String-Trim/issues>.
+
+CREDITS
+    This module was inspired by code at
+    <http://www.perlmonks.org/?node_id=36684> written by japhy (Jeff
+    Pinyan), dragonchild, and Aristotle. This Perl module was written by
+    Mike Doherty.
+
+AUTHORS
+    *   Mike Doherty <doherty@cpan.org>
+
+    *   Jeff Pinyan <pinyan@cpan.org>
+
+    *   Rob Kinyon <rkinyon@cpan.org>
+
+    *   Αριστοτέλης Παγκαλτζής (Aristotle Pagaltzis) <aristotle@cpan.org>
+
+COPYRIGHT AND LICENSE
+    This software is copyright (c) 2010 by Mike Doherty.
+
+    This is free software; you can redistribute it and/or modify it under
+    the same terms as the Perl 5 programming language system itself.
+
diff --git a/lib/String/Trim.pm b/lib/String/Trim.pm
new file mode 100644
index 0000000..c307ddb
--- /dev/null
+++ b/lib/String/Trim.pm
@@ -0,0 +1,184 @@
+package String::Trim;
+# ABSTRACT: trim whitespace from your strings
+use strict;
+use warnings;
+our $VERSION = '0.005'; # VERSION
+
+
+use Exporter 5.57 qw(import);
+our @EXPORT = qw(trim);
+
+
+sub trim { # Starting point: http://www.perlmonks.org/?node_id=36684
+    my $t = qr{^\s+|\s+$};
+    if (defined wantarray) {
+        @_ = (@_ ? @_ : $_);
+        if (ref $_[0] eq 'ARRAY') {
+            @_ = @{ $_[0] };
+            for (@_) { s{$t}{}g if defined $_ }
+            return \@_;
+        }
+        elsif (ref $_[0] eq 'HASH') {
+            foreach my $k (keys %{ $_[0] }) {
+                (my $nk = $k) =~ s{$t}{}g;
+                if (defined $_[0]->{$k}) {
+                    ($_[0]->{$nk} = $_[0]->{$k}) =~ s{$t}{}g;
+                }
+                else {
+                    $_[0]->{$nk} = undef;
+                }
+                delete $_[0]->{$k} unless $k eq $nk;
+            }
+        }
+        else {
+            for (@_ ? @_ : $_) { s{$t}{}g if defined $_ }
+        }
+        return wantarray ? @_ : $_[0];
+    }
+    else {
+        if (ref $_[0] eq 'ARRAY') {
+            for (@{ $_[0] }) { s{$t}{}g if defined $_ }
+        }
+        elsif (ref $_[0] eq 'HASH') {
+            foreach my $k (keys %{ $_[0] }) {
+                (my $nk = $k) =~ s{$t}{}g;
+                if (defined $_[0]->{$k}) {
+                    ($_[0]->{$nk} = $_[0]->{$k}) =~ s{$t}{}g;
+                }
+                else {
+                    $_[0]->{$nk} = undef;
+                }
+                delete $_[0]->{$k} unless $k eq $nk
+            }
+        }
+        else {
+            for (@_ ? @_ : $_) { s{$t}{}g if defined $_ }
+        }
+    }
+}
+
+
+1;
+
+
+
+=pod
+
+=encoding utf-8
+
+=head1 NAME
+
+String::Trim - trim whitespace from your strings
+
+=head1 VERSION
+
+version 0.005
+
+=head1 SYNOPSIS
+
+    use String::Trim;
+
+    print "Do it? ";
+    trim(my $response = <>);
+    print "'$response'\n";
+
+=head1 DESCRIPTION
+
+C<String::Trim> trims whitespace off your strings. L<chomp> trims only C<$/> (typically,
+that's newline), but C<trim> will trim all leading and trailing whitespace.
+
+=head1 FUNCTIONS
+
+=head2 trim
+
+Returns the string with all leading and trailing whitespace removed. Trimming
+undef gives you undef. Alternatively, you can trim in-place.
+
+    my $var     = ' my string  ';
+    my $trimmed = trim($var);
+    # OR
+    trim($var);
+
+C<trim> also knows how to trim an array or arrayref:
+
+    my @to_trim = (' one ', ' two ', ' three ');
+    my @trimmed = trim(@to_trim);
+    # OR
+    trim(@to_trim);
+    # OR
+    my $trimmed = trim(\@to_trim);
+    # OR
+    trim(\@to_trim);
+
+=head1 RATIONALE
+
+C<trim> is often used by beginners, who may not understand how to spin their own. While
+L<String::Util> does have a C<trim> function, it depends on L<Debug::ShowStuff>, which
+depends on L<Taint>, which fails the test suite, and doesn't appear to be maintained.
+This module installs, is actively maintained, and has no non-core dependencies.
+
+Other options include L<Text::Trim> and L<String::Strip> (which is implemented in XS,
+and is therefore likely to be very fast, but requires a C compiler).
+
+=head1 AVAILABILITY
+
+The latest version of this module is available from the Comprehensive Perl
+Archive Network (CPAN). Visit L<http://www.perl.com/CPAN/> to find a CPAN
+site near you, or see L<http://search.cpan.org/dist/String-Trim/>.
+
+The development version lives at L<http://github.com/doherty/String-Trim>
+and may be cloned from L<git://github.com/doherty/String-Trim.git>.
+Instead of sending patches, please fork this project using the standard
+git and github infrastructure.
+
+=head1 SOURCE
+
+The development version is on github at L<http://github.com/doherty/String-Trim>
+and may be cloned from L<git://github.com/doherty/String-Trim.git>
+
+=head1 BUGS AND LIMITATIONS
+
+No bugs have been reported.
+
+Please report any bugs or feature requests through the web interface at
+L<https://github.com/doherty/String-Trim/issues>.
+
+=head1 CREDITS
+
+This module was inspired by code at L<http://www.perlmonks.org/?node_id=36684> written
+by japhy (Jeff Pinyan), dragonchild, and Aristotle. This Perl module was written by Mike
+Doherty.
+
+=head1 AUTHORS
+
+=over 4
+
+=item *
+
+Mike Doherty <doherty@cpan.org>
+
+=item *
+
+Jeff Pinyan <pinyan@cpan.org>
+
+=item *
+
+Rob Kinyon <rkinyon@cpan.org>
+
+=item *
+
+Αριστοτέλης Παγκαλτζής (Aristotle Pagaltzis) <aristotle@cpan.org>
+
+=back
+
+=head1 COPYRIGHT AND LICENSE
+
+This software is copyright (c) 2010 by Mike Doherty.
+
+This is free software; you can redistribute it and/or modify it under
+the same terms as the Perl 5 programming language system itself.
+
+=cut
+
+
+__END__
diff --git a/t/00-compile.t b/t/00-compile.t
new file mode 100644
index 0000000..c6740cc
--- /dev/null
+++ b/t/00-compile.t
@@ -0,0 +1,59 @@
+#!perl
+
+use strict;
+use warnings;
+
+use Test::More;
+
+
+
+use File::Find;
+use File::Temp qw{ tempdir };
+
+my @modules;
+find(
+  sub {
+    return if $File::Find::name !~ /\.pm\z/;
+    my $found = $File::Find::name;
+    $found =~ s{^lib/}{};
+    $found =~ s{[/\\]}{::}g;
+    $found =~ s/\.pm$//;
+    # nothing to skip
+    push @modules, $found;
+  },
+  'lib',
+);
+
+my @scripts;
+if ( -d 'bin' ) {
+    find(
+      sub {
+        return unless -f;
+        my $found = $File::Find::name;
+        # nothing to skip
+        push @scripts, $found;
+      },
+      'bin',
+    );
+}
+
+my $plan = scalar(@modules) + scalar(@scripts);
+$plan ? (plan tests => $plan) : (plan skip_all => "no tests to run");
+
+{
+    # fake home for cpan-testers
+    # no fake requested ## local $ENV{HOME} = tempdir( CLEANUP => 1 );
+
+    like( qx{ $^X -Ilib -e "require $_; print '$_ ok'" }, qr/^\s*$_ ok/s, "$_ loaded ok" )
+        for sort @modules;
+
+    SKIP: {
+        eval "use Test::Script 1.05; 1;";
+        skip "Test::Script needed to test script compilation", scalar(@scripts) if $@;
+        foreach my $file ( @scripts ) {
+            my $script = $file;
+            $script =~ s!.*/!!;
+            script_compiles( $file, "$script script compiles" );
+        }
+    }
+}
diff --git a/t/00-use.t b/t/00-use.t
new file mode 100644
index 0000000..8f1b2f0
--- /dev/null
+++ b/t/00-use.t
@@ -0,0 +1,6 @@
+use strict;
+use warnings;
+use Test::More tests => 1;
+use String::Trim;
+
+use_ok('String::Trim');
diff --git a/t/01-string.t b/t/01-string.t
new file mode 100644
index 0000000..85faeab
--- /dev/null
+++ b/t/01-string.t
@@ -0,0 +1,37 @@
+use strict;
+use warnings;
+use Test::More 0.94 tests => 2;
+use Test::Builder 0.94 qw();
+use String::Trim;
+
+my $strings = {
+    'one'       => 'one',
+    'tw o'      => 'tw o',
+    ' three'    => 'three',
+    'four '     => 'four',
+    ' five '    => 'five',
+    '               six          ' => 'six',
+    " seven\n"  => 'seven',
+    "\n\neight" => 'eight',
+    " nine\nten " => "nine\nten",
+};
+
+subtest 'return' => sub {
+    plan tests => scalar keys %$strings;
+    foreach my $key (keys %$strings) {
+        my $to_trim = $key;
+        my $ought   = $strings->{$key};
+        my $trimmed = trim($to_trim);
+        is($trimmed, $ought, "trim($to_trim) returned '$ought' OK");
+    }
+};
+
+subtest 'in-place' => sub {
+    plan tests => scalar keys %$strings;
+    foreach my $key (keys %$strings) {
+        my $to_trim = $key;
+        my $ought   = $strings->{$key};
+        trim($to_trim);
+        is($to_trim, $ought, "'$to_trim' trimmed to '$ought' in-place OK");
+    }
+};
diff --git a/t/02-undef.t b/t/02-undef.t
new file mode 100644
index 0000000..f9ab7ed
--- /dev/null
+++ b/t/02-undef.t
@@ -0,0 +1,18 @@
+use strict;
+use warnings;
+use Test::More 0.94 tests => 2;
+use Test::Builder 0.94 qw();
+use String::Trim;
+
+subtest 'return' => sub {
+    plan tests => 1;
+    my $trimmed = trim(undef);
+    is($trimmed, undef, 'trim(undef) returns undef');
+};
+
+subtest 'in-place' => sub {
+    plan tests => 1;
+    my $to_trim = undef;
+    trim($to_trim);
+    is($to_trim, undef, 'undef trims to undef in-place');
+};
diff --git a/t/03-array.t b/t/03-array.t
new file mode 100644
index 0000000..412a56a
--- /dev/null
+++ b/t/03-array.t
@@ -0,0 +1,38 @@
+use strict;
+use warnings;
+use Test::More 0.94 tests => 2;
+use Test::Builder 0.94 qw();
+use String::Trim;
+
+my $tests = {
+    one => {
+        before => ['one',  ' two ', "three\n", undef],
+        after  => ['one',  'two',   'three', undef],
+    },
+    two => {
+        before => [' test '],
+        after  => ['test'],
+    },
+};
+
+subtest 'return' => sub {
+    plan tests => scalar keys %$tests;
+    foreach my $key (keys %$tests) {
+        my @to_trim = @{ $tests->{$key}->{before} };
+        my @ought   = @{ $tests->{$key}->{after} };
+        
+        my @trimmed = trim(@to_trim);
+        is_deeply(\@trimmed, \@ought, 'trim(@array) returns a trimmed array OK');
+    }
+};
+
+subtest 'in-place' => sub {
+    plan tests => scalar keys %$tests;
+    foreach my $key (keys %$tests) {
+        my @to_trim = @{ $tests->{$key}->{before} };
+        my @ought   = @{ $tests->{$key}->{after} };
+        
+        trim(@to_trim);
+        is_deeply(\@to_trim, \@ought, 'trims an array in-place OK');
+    }
+};
diff --git a/t/04-arrayref.t b/t/04-arrayref.t
new file mode 100644
index 0000000..907a37c
--- /dev/null
+++ b/t/04-arrayref.t
@@ -0,0 +1,38 @@
+use strict;
+use warnings;
+use Test::More 0.94 tests => 2;
+use Test::Builder 0.94 qw();
+use String::Trim;
+
+my $tests = {
+    one => {
+        before => ['one',  ' two ', "three\n", undef],
+        after  => ['one',  'two',   'three', undef],
+    },
+    two => {
+        before => [' test '],
+        after  => ['test'],
+    },
+};
+
+subtest 'return' => sub {
+    plan tests => scalar keys %$tests;
+    foreach my $key (keys %$tests) {
+        my $to_trim = $tests->{$key}->{before};
+        my $ought   = $tests->{$key}->{after};
+        
+        my $trimmed = trim($to_trim);
+        is_deeply($trimmed, $ought, 'trim($arrayref) returns a trimmed arrayref OK');
+    }
+};
+
+subtest 'in-place' => sub {
+    plan tests => scalar keys %$tests;
+    foreach my $key (keys %$tests) {
+        my $to_trim = $tests->{$key}->{before};
+        my $ought   = $tests->{$key}->{after};
+        
+        trim($to_trim);
+        is_deeply($to_trim, $ought, 'trims an arrayref in-place OK');
+    }
+};
diff --git a/t/05-default.t b/t/05-default.t
new file mode 100644
index 0000000..096d899
--- /dev/null
+++ b/t/05-default.t
@@ -0,0 +1,29 @@
+use strict;
+use warnings;
+use Test::More 0.88;
+use String::Trim;
+
+my $trimmed;
+my $untrimmed;
+my $tests = 0;
+while(<DATA>) {
+    $untrimmed .= $_;
+    trim;
+    $trimmed .= $_;
+    unlike($_, qr{^\s|\s$}, "trimmed line $tests OK");
+    $tests++;
+}
+isnt($trimmed, $untrimmed, 'trim has some effect');
+$tests++;
+is($trimmed, 'onetwothreefour', 'trims $_ ok');
+$tests++;
+
+done_testing($tests);
+
+
+__DATA__
+ one
+two   
+
+three 
+ four
\ No newline at end of file
diff --git a/t/06-hash.t b/t/06-hash.t
new file mode 100644
index 0000000..fa6fe28
--- /dev/null
+++ b/t/06-hash.t
@@ -0,0 +1,37 @@
+use strict;
+use warnings;
+use Test::More 0.94 tests => 1;#2;
+use String::Trim;
+
+my $in = {
+    "\none" => undef,
+    'two'   => ' two',
+    'three' => 'three ',
+    ' four' => ' four ',
+    'five'  => '  five  ',
+};
+my $out = {
+    'one'   => undef,
+    'two'   => 'two',
+    'three' => 'three',
+    'four'  => 'four',
+    'five'  => 'five',
+};
+
+# subtest 'return' => sub {
+    # plan tests => 1;
+    # my %trimmed = trim(%$in);
+    # is_deeply(\%trimmed, $out, 'trim(%hash) returns a trimmed hash OK');
+# };
+
+subtest 'in-place' => sub {
+    TODO: {
+        local $TODO = 'unimplemented';
+        plan tests => 1;
+        use Data::Dumper;
+        # print STDERR Dumper $in;
+        trim(%$in);
+        # print STDERR Dumper $in;
+        is_deeply($in, $out, 'trim(%hash) trims a hash in-place OK');
+    }
+};
diff --git a/t/07-hashref.t b/t/07-hashref.t
new file mode 100644
index 0000000..1e5369e
--- /dev/null
+++ b/t/07-hashref.t
@@ -0,0 +1,31 @@
+use strict;
+use warnings;
+use Test::More 0.94 tests => 2;
+use String::Trim;
+
+my $in = {
+    "\none" => undef,
+    'two'   => ' two',
+    'three' => 'three ',
+    ' four' => ' four ',
+    'five'  => '  five  ',
+};
+my $out = {
+    'one'   => undef,
+    'two'   => 'two',
+    'three' => 'three',
+    'four'  => 'four',
+    'five'  => 'five',
+};
+
+subtest 'return' => sub {
+    plan tests => 1;
+    my $trimmed = trim($in);
+    is_deeply($trimmed, $out, 'trim(%hash) returns a trimmed hash OK');
+};
+
+subtest 'in-place' => sub {
+    plan tests => 1;
+    trim($in);
+    is_deeply($in, $out, 'trim(%hash) trims a hash in-place OK');
+};
diff --git a/xt/author/critic.t b/xt/author/critic.t
new file mode 100644
index 0000000..d5b4c96
--- /dev/null
+++ b/xt/author/critic.t
@@ -0,0 +1,12 @@
+#!perl
+
+use strict;
+use warnings;
+
+use Test::More;
+use English qw(-no_match_vars);
+
+eval "use Test::Perl::Critic";
+plan skip_all => 'Test::Perl::Critic required to criticise code' if $@;
+Test::Perl::Critic->import( -profile => "perlcritic.rc" ) if -e "perlcritic.rc";
+all_critic_ok();
diff --git a/xt/release/cpan-changes.t b/xt/release/cpan-changes.t
new file mode 100644
index 0000000..0789599
--- /dev/null
+++ b/xt/release/cpan-changes.t
@@ -0,0 +1,7 @@
+#!perl
+
+use Test::More;
+eval 'use Test::CPAN::Changes';
+plan skip_all => 'Test::CPAN::Changes required for this test' if $@;
+changes_file_ok('Changes');
+done_testing();
diff --git a/xt/release/dist-manifest.t b/xt/release/dist-manifest.t
new file mode 100644
index 0000000..a567fb7
--- /dev/null
+++ b/xt/release/dist-manifest.t
@@ -0,0 +1,8 @@
+#!perl
+
+use Test::More;
+
+eval "use Test::DistManifest";
+plan skip_all => "Test::DistManifest required for testing the manifest"
+  if $@;
+manifest_ok();
diff --git a/xt/release/distmeta.t b/xt/release/distmeta.t
new file mode 100644
index 0000000..b46c7fc
--- /dev/null
+++ b/xt/release/distmeta.t
@@ -0,0 +1,7 @@
+#!perl
+
+use Test::More;
+
+eval "use Test::CPAN::Meta";
+plan skip_all => "Test::CPAN::Meta required for testing META.yml" if $@;
+meta_yaml_ok();
diff --git a/xt/release/eol.t b/xt/release/eol.t
new file mode 100644
index 0000000..d13c49d
--- /dev/null
+++ b/xt/release/eol.t
@@ -0,0 +1,8 @@
+use strict;
+use warnings;
+use Test::More;
+
+eval 'use Test::EOL';
+plan skip_all => 'Test::EOL required' if $@;
+
+all_perl_files_ok({ trailing_whitespace => 1 });
diff --git a/xt/release/has-version.t b/xt/release/has-version.t
new file mode 100644
index 0000000..2115333
--- /dev/null
+++ b/xt/release/has-version.t
@@ -0,0 +1,8 @@
+#!perl
+
+use Test::More;
+
+eval "use Test::HasVersion";
+plan skip_all => "Test::HasVersion required for testing version numbers"
+  if $@;
+all_pm_version_ok();
diff --git a/xt/release/kwalitee.t b/xt/release/kwalitee.t
new file mode 100644
index 0000000..d4651a7
--- /dev/null
+++ b/xt/release/kwalitee.t
@@ -0,0 +1,8 @@
+#!perl
+
+use Test::More;
+
+eval "use Test::Kwalitee";
+plan skip_all => "Test::Kwalitee required for testing kwalitee"
+  if $@;
+
diff --git a/xt/release/meta-json.t b/xt/release/meta-json.t
new file mode 100644
index 0000000..4dd2a14
--- /dev/null
+++ b/xt/release/meta-json.t
@@ -0,0 +1,6 @@
+#!perl
+
+use Test::More;
+eval 'use Test::CPAN::Meta::JSON';
+plan skip_all => 'Test::CPAN::Meta::JSON required for testing META.json' if $@;
+meta_json_ok();
diff --git a/xt/release/minimum-version.t b/xt/release/minimum-version.t
new file mode 100644
index 0000000..d108c79
--- /dev/null
+++ b/xt/release/minimum-version.t
@@ -0,0 +1,8 @@
+#!perl
+
+use Test::More;
+
+eval "use Test::MinimumVersion";
+plan skip_all => "Test::MinimumVersion required for testing minimum versions"
+  if $@;
+all_minimum_version_from_metayml_ok();
diff --git a/xt/release/no-tabs.t b/xt/release/no-tabs.t
new file mode 100644
index 0000000..ff70010
--- /dev/null
+++ b/xt/release/no-tabs.t
@@ -0,0 +1,8 @@
+use strict;
+use warnings;
+use Test::More;
+
+eval 'use Test::NoTabs';
+plan skip_all => 'Test::NoTabs required' if $@;
+
+all_perl_files_ok();
diff --git a/xt/release/pod-coverage.t b/xt/release/pod-coverage.t
new file mode 100644
index 0000000..b52218b
--- /dev/null
+++ b/xt/release/pod-coverage.t
@@ -0,0 +1,13 @@
+#!perl
+
+use Test::More;
+
+eval "use Test::Pod::Coverage 1.08";
+plan skip_all => "Test::Pod::Coverage 1.08 required for testing POD coverage"
+  if $@;
+
+eval "use Pod::Coverage::TrustPod";
+plan skip_all => "Pod::Coverage::TrustPod required for testing POD coverage"
+  if $@;
+
+all_pod_coverage_ok({ coverage_class => 'Pod::Coverage::TrustPod' });
diff --git a/xt/release/pod-linkcheck.t b/xt/release/pod-linkcheck.t
new file mode 100644
index 0000000..00602db
--- /dev/null
+++ b/xt/release/pod-linkcheck.t
@@ -0,0 +1,20 @@
+#!perl
+
+use strict;
+use warnings;
+use Test::More;
+
+foreach my $env_skip ( qw(
+  SKIP_POD_LINKCHECK
+) ){
+  plan skip_all => "\$ENV{$env_skip} is set, skipping"
+    if $ENV{$env_skip};
+}
+
+eval "use Test::Pod::LinkCheck";
+if ( $@ ) {
+  plan skip_all => 'Test::Pod::LinkCheck required for testing POD';
+}
+else {
+  Test::Pod::LinkCheck->new->all_pod_ok;
+}
diff --git a/xt/release/pod-syntax.t b/xt/release/pod-syntax.t
new file mode 100644
index 0000000..8a22900
--- /dev/null
+++ b/xt/release/pod-syntax.t
@@ -0,0 +1,7 @@
+#!perl
+use Test::More;
+
+eval "use Test::Pod 1.41";
+plan skip_all => "Test::Pod 1.41 required for testing POD" if $@;
+
+all_pod_files_ok();
diff --git a/xt/release/portability.t b/xt/release/portability.t
new file mode 100644
index 0000000..e57e66e
--- /dev/null
+++ b/xt/release/portability.t
@@ -0,0 +1,8 @@
+#!perl
+
+use Test::More;
+
+eval "use Test::Portability::Files";
+plan skip_all => "Test::Portability::Files required for testing portability"
+  if $@;
+run_tests();
diff --git a/xt/release/synopsis.t b/xt/release/synopsis.t
new file mode 100644
index 0000000..a5f7223
--- /dev/null
+++ b/xt/release/synopsis.t
@@ -0,0 +1,8 @@
+#!perl
+
+use Test::More;
+
+eval "use Test::Synopsis";
+plan skip_all => "Test::Synopsis required for testing synopses"
+  if $@;
+all_synopsis_ok('lib');
diff --git a/xt/release/unused-vars.t b/xt/release/unused-vars.t
new file mode 100644
index 0000000..edbcb35
--- /dev/null
+++ b/xt/release/unused-vars.t
@@ -0,0 +1,8 @@
+#!perl
+
+use Test::More;
+
+eval "use Test::Vars";
+plan skip_all => "Test::Vars required for testing unused vars"
+  if $@;
+all_vars_ok();