Initial commit with skeleton of the project.

Also added original Perl, together with PHP and Javascript ports.

7 files changed, 854 insertions, 0 deletions

diff --git a/test/00.load.py b/test/00.load.py
new file mode 100644
index 0000000..e4f3f5f
--- /dev/null
+++ b/test/00.load.py
@@ -0,0 +1,10 @@
+# -*- coding: utf-8 -*-
+import unittest
+
+class TestBasics(unittest.TestCase):
+    def test_import(self):
+        import yamlish
+        from yamlish import Reader
+        from yamlish import Writer
+        self.assert_(True,
+            "Testing import of yamlish, version %s." % yamlish.__version__)
diff --git a/test/10-input.py b/test/10-input.py
new file mode 100644
index 0000000..5ec8d96
--- /dev/null
+++ b/test/10-input.py
@@ -0,0 +1,103 @@
+# -*- coding: utf-8 -*-
+import unittest
+
+IN = """
+  ---
+  bill-to:
+    address:
+      city: "Royal Oak"
+      lines: "458 Walkman Dr.\nSuite #292\n"
+      postal: 48046
+      state: MI
+    family: Dumars
+    given: Chris
+  comments: "Late afternoon is best. Backup contact is Nancy Billsmer @ 338-4338\n"
+  date: 2001-01-23
+  invoice: 34843
+  product:
+    -
+      description: Basketball
+      price: 450.00
+      quantity: 4
+      sku: BL394D
+    -
+      description: "Super Hoop"
+      price: 2392.00
+      quantity: 1
+      sku: BL4438H
+  tax: 251.42
+  total: 4443.52
+  ...
+"""
+
+OUT = {
+  'bill-to': {
+    'given': 'Chris',
+    'address': {
+      'city': 'Royal Oak',
+      'postal': '48046',
+      'lines': "458 Walkman Dr.\nSuite #292\n",
+      'state': 'MI'
+    },
+    'family': 'Dumars'
+  },
+  'invoice': '34843',
+  'date': '2001-01-23',
+  'tax': '251.42',
+  'product': [
+    {
+      'sku': 'BL394D',
+      'quantity': '4',
+      'price': '450.00',
+      'description': 'Basketball'
+    },
+    {
+      'sku': 'BL4438H',
+      'quantity': '1',
+      'price': '2392.00',
+      'description': 'Super Hoop'
+    }
+  ],
+  'comments':
+   "Late afternoon is best. Backup contact is Nancy Billsmer @ 338-4338\n",
+  'total': '4443.52'
+}
+
+class TestInput(unittest.TestCase):
+    """FIXME description of this class"""
+    def test_reader(self):
+        #my @lines = @$in;
+        #my $scalar = join("\n", @lines) . "\n";
+        #
+        #my @source = (
+        #  {
+        #    name= > 'Array reference',
+        #    source= > $in,
+        #  },
+        #  {
+        #    name= > 'Closure',
+        #    source= > sub { shift @lines },
+        #  },
+        #  {
+        #    name= > 'Scalar',
+        #    source= > $scalar,
+        #  },
+        #  {
+        #    name= > 'Scalar ref',
+        #    source= > \$scalar,
+        #  },
+        #);
+        #
+        #for my $src (@source) {
+        #  my $name = $src -> {name};
+        #  ok my $yaml = Data::YAML::Reader -> new, "$name: Created";
+        #  isa_ok $yaml, 'Data::YAML::Reader';
+        #
+        #  my $got = eval { $yaml -> read($src -> {source}) };
+        #  unless (is_deeply $got, $out, "$name: Result matches") {
+        #    local $Data::Dumper::Useqq = $Data::Dumper::Useqq = 1;
+        #    diag(Data::Dumper -> Dump([$got], ['$got']));
+        #    diag(Data::Dumper -> Dump([$out], ['$expected']));
+        #  }
+        #}
+        pass
diff --git a/test/20-reader.py b/test/20-reader.py
new file mode 100644
index 0000000..fc6806f
--- /dev/null
+++ b/test/20-reader.py
@@ -0,0 +1,419 @@
+use strict;
+use warnings;
+use Test::More;
+use Data::Dumper;
+
+use Data::YAML::Reader;
+
+my @SCHEDULE;
+
+BEGIN {
+  @SCHEDULE = (
+    {
+      name => 'Hello World',
+      in   => [ '--- Hello, World', '...', ],
+      out  => "Hello, World",
+    },
+    {
+      name => 'Hello World 2',
+      in   => [ '--- \'Hello, \'\'World\'', '...', ],
+      out  => "Hello, 'World",
+    },
+    {
+      name => 'Hello World 3',
+      in   => [ '--- "Hello, World"', '...', ],
+      out  => "Hello, World",
+    },
+    {
+      name => 'Hello World 4',
+      in   => [ '--- "Hello, World"', '...', ],
+      out  => "Hello, World",
+    },
+    {
+      name => 'Hello World 4',
+      in   => [ '--- >', '   Hello,', '      World', '...', ],
+      out  => "Hello, World\n",
+    },
+    {
+      name  => 'Hello World 5',
+      in    => [ '--- >', '   Hello,', '  World', '...', ],
+      error => qr{Missing\s+'[.][.][.]'},
+    },
+    {
+      name => 'Simple array',
+      in   => [ '---', '- 1', '- 2', '- 3', '...', ],
+      out => [ '1', '2', '3' ],
+    },
+    {
+      name => 'Mixed array',
+      in   => [ '---', '- 1', '- \'two\'', '- "three\n"', '...', ],
+      out => [ '1', 'two', "three\n" ],
+    },
+    {
+      name => 'Hash in array',
+      in   => [ '---', '- 1', '- two: 2', '- 3', '...', ],
+      out => [ '1', { two => '2' }, '3' ],
+    },
+    {
+      name => 'Hash in array 2',
+      in   => [ '---', '- 1', '- two: 2', '  three: 3', '- 4', '...', ],
+      out  => [ '1', { two => '2', three => '3' }, '4' ],
+    },
+    {
+      name => 'Nested array',
+      in   => [
+        '---',
+        '- one',
+        '-',
+        '  - two',
+        '  -',
+        '    - three',
+        '  - four',
+        '- five',
+        '...',
+      ],
+      out => [ 'one', [ 'two', ['three'], 'four' ], 'five' ],
+    },
+    {
+      name => 'Nested hash',
+      in   => [
+        '---',
+        'one:',
+        '  five: 5',
+        '  two:',
+        '    four: 4',
+        '    three: 3',
+        'six: 6',
+        '...',
+      ],
+      out => {
+        one => { two => { three => '3', four => '4' }, five => '5' },
+        six => '6'
+      },
+    },
+
+    {
+      name => 'Original YAML::Tiny test',
+      in   => [
+        '---',
+        'invoice: 34843',
+        'date   : 2001-01-23',
+        'bill-to:',
+        '    given  : Chris',
+        '    family : Dumars',
+        '    address:',
+        '        lines: |',
+        '            458 Walkman Dr.',
+        '            Suite #292',
+        '        city    : Royal Oak',
+        '        state   : MI',
+        '        postal  : 48046',
+        'product:',
+        '    - sku         : BL394D',
+        '      quantity    : 4',
+        '      description : Basketball',
+        '      price       : 450.00',
+        '    - sku         : BL4438H',
+        '      quantity    : 1',
+        '      description : Super Hoop',
+        '      price       : 2392.00',
+        'tax  : 251.42',
+        'total: 4443.52',
+        'comments: >',
+        '    Late afternoon is best.',
+        '    Backup contact is Nancy',
+        '    Billsmer @ 338-4338',
+        '...',
+      ],
+      out => {
+        'bill-to' => {
+          'given'   => 'Chris',
+          'address' => {
+            'city'   => 'Royal Oak',
+            'postal' => '48046',
+            'lines'  => "458 Walkman Dr.\nSuite #292\n",
+            'state'  => 'MI'
+          },
+          'family' => 'Dumars'
+        },
+        'invoice' => '34843',
+        'date'    => '2001-01-23',
+        'tax'     => '251.42',
+        'product' => [
+          {
+            'sku'         => 'BL394D',
+            'quantity'    => '4',
+            'price'       => '450.00',
+            'description' => 'Basketball'
+          },
+          {
+            'sku'         => 'BL4438H',
+            'quantity'    => '1',
+            'price'       => '2392.00',
+            'description' => 'Super Hoop'
+          }
+        ],
+        'comments' =>
+         "Late afternoon is best. Backup contact is Nancy Billsmer @ 338-4338\n",
+        'total' => '4443.52'
+      }
+    },
+
+    # Tests harvested from YAML::Tiny
+    {
+      in    => ['...'],
+      name  => 'Regression: empty',
+      error => qr{document\s+header\s+not\s+found}
+    },
+    {
+      in    => [ '# comment', '...' ],
+      name  => 'Regression: only_comment',
+      error => qr{document\s+header\s+not\s+found}
+    },
+    {
+      out   => undef,
+      in    => [ '---', '...' ],
+      name  => 'Regression: only_header',
+      error => qr{Premature\s+end}i,
+    },
+    {
+      out   => undef,
+      in    => [ '---', '---', '...' ],
+      name  => 'Regression: two_header',
+      error => qr{Unexpected\s+start}i,
+    },
+    {
+      out  => undef,
+      in   => [ '--- ~', '...' ],
+      name => 'Regression: one_undef'
+    },
+    {
+      out  => undef,
+      in   => [ '---  ~', '...' ],
+      name => 'Regression: one_undef2'
+    },
+    {
+      in    => [ '--- ~', '---', '...' ],
+      name  => 'Regression: two_undef',
+      error => qr{Missing\s+'[.][.][.]'},
+    },
+    {
+      out  => 'foo',
+      in   => [ '--- foo', '...' ],
+      name => 'Regression: one_scalar',
+    },
+    {
+      out  => 'foo',
+      in   => [ '---  foo', '...' ],
+      name => 'Regression: one_scalar2',
+    },
+    {
+      in    => [ '--- foo', '--- bar', '...' ],
+      name  => 'Regression: two_scalar',
+      error => qr{Missing\s+'[.][.][.]'},
+    },
+    {
+      out  => ['foo'],
+      in   => [ '---', '- foo', '...' ],
+      name => 'Regression: one_list1'
+    },
+    {
+      out => [ 'foo', 'bar' ],
+      in  => [ '---', '- foo', '- bar', '...' ],
+      name => 'Regression: one_list2'
+    },
+    {
+      out => [ undef, 'bar' ],
+      in  => [ '---', '- ~', '- bar', '...' ],
+      name => 'Regression: one_listundef'
+    },
+    {
+      out => { 'foo' => 'bar' },
+      in   => [ '---', 'foo: bar', '...' ],
+      name => 'Regression: one_hash1'
+    },
+    {
+      out => {
+        'foo'  => 'bar',
+        'this' => undef
+      },
+      in   => [ '---', 'foo: bar', 'this: ~', '...' ],
+      name => 'Regression: one_hash2'
+    },
+    {
+      out => { 'foo' => [ 'bar', undef, 'baz' ] },
+      in => [ '---', 'foo:', '  - bar', '  - ~', '  - baz', '...' ],
+      name => 'Regression: array_in_hash'
+    },
+    {
+      out => {
+        'bar' => { 'foo' => 'bar' },
+        'foo' => undef
+      },
+      in => [ '---', 'foo: ~', 'bar:', '  foo: bar', '...' ],
+      name => 'Regression: hash_in_hash'
+    },
+    {
+      out => [
+        {
+          'foo'  => undef,
+          'this' => 'that'
+        },
+        'foo', undef,
+        {
+          'foo'  => 'bar',
+          'this' => 'that'
+        }
+      ],
+      in => [
+        '---',
+        '-',
+        '  foo: ~',
+        '  this: that',
+        '- foo',
+        '- ~',
+        '-',
+        '  foo: bar',
+        '  this: that',
+        '...'
+      ],
+      name => 'Regression: hash_in_array'
+    },
+    {
+      out  => ['foo'],
+      in   => [ '---', '- \'foo\'', '...' ],
+      name => 'Regression: single_quote1'
+    },
+    {
+      out  => ['  '],
+      in   => [ '---', '- \'  \'', '...' ],
+      name => 'Regression: single_spaces'
+    },
+    {
+      out  => [''],
+      in   => [ '---', '- \'\'', '...' ],
+      name => 'Regression: single_null'
+    },
+    {
+      out  => '  ',
+      in   => [ '--- "  "', '...' ],
+      name => 'Regression: only_spaces'
+    },
+    {
+      out => [
+        undef,
+        {
+          'foo'  => 'bar',
+          'this' => 'that'
+        },
+        'baz'
+      ],
+      in =>
+       [ '---', '- ~', '- foo: bar', '  this: that', '- baz', '...' ],
+      name => 'Regression: inline_nested_hash'
+    },
+    {
+      name => "Unprintables",
+      in   => [
+        "---",
+        "- \"\\z\\x01\\x02\\x03\\x04\\x05\\x06\\a\\x08\\t\\n\\v\\f\\r\\x0e\\x0f\"",
+        "- \"\\x10\\x11\\x12\\x13\\x14\\x15\\x16\\x17\\x18\\x19\\x1a\\e\\x1c\\x1d\\x1e\\x1f\"",
+        "- \" !\\\"#\$%&'()*+,-./\"",
+        "- 0123456789:;<=>?",
+        "- '\@ABCDEFGHIJKLMNO'",
+        "- 'PQRSTUVWXYZ[\\]^_'",
+        "- '`abcdefghijklmno'",
+        "- 'pqrstuvwxyz{|}~\177'",
+        "- \200\201\202\203\204\205\206\207\210\211\212\213\214\215\216\217",
+        "- \220\221\222\223\224\225\226\227\230\231\232\233\234\235\236\237",
+        "- \240\241\242\243\244\245\246\247\250\251\252\253\254\255\256\257",
+        "- \260\261\262\263\264\265\266\267\270\271\272\273\274\275\276\277",
+        "- \300\301\302\303\304\305\306\307\310\311\312\313\314\315\316\317",
+        "- \320\321\322\323\324\325\326\327\330\331\332\333\334\335\336\337",
+        "- \340\341\342\343\344\345\346\347\350\351\352\353\354\355\356\357",
+        "- \360\361\362\363\364\365\366\367\370\371\372\373\374\375\376\377",
+        "..."
+      ],
+      out => [
+        "\0\1\2\3\4\5\6\a\b\t\n\13\f\r\16\17",
+        "\20\21\22\23\24\25\26\27\30\31\32\e\34\35\36\37",
+        " !\"#\$%&'()*+,-./",
+        "0123456789:;<=>?",
+        "\@ABCDEFGHIJKLMNO",
+        "PQRSTUVWXYZ[\\]^_",
+        "`abcdefghijklmno",
+        "pqrstuvwxyz{|}~\177",
+        "\200\201\202\203\204\205\206\207\210\211\212\213\214\215\216\217",
+        "\220\221\222\223\224\225\226\227\230\231\232\233\234\235\236\237",
+        "\240\241\242\243\244\245\246\247\250\251\252\253\254\255\256\257",
+        "\260\261\262\263\264\265\266\267\270\271\272\273\274\275\276\277",
+        "\300\301\302\303\304\305\306\307\310\311\312\313\314\315\316\317",
+        "\320\321\322\323\324\325\326\327\330\331\332\333\334\335\336\337",
+        "\340\341\342\343\344\345\346\347\350\351\352\353\354\355\356\357",
+        "\360\361\362\363\364\365\366\367\370\371\372\373\374\375\376\377"
+      ],
+    },
+    {
+      name => 'Quoted hash keys',
+      in   => [
+        '---', '  "quoted": Magic!', '  "\n\t": newline, tab', '...',
+      ],
+      out => {
+        quoted => 'Magic!',
+        "\n\t" => 'newline, tab',
+      },
+    },
+  );
+
+  plan tests => @SCHEDULE * 5;
+}
+
+sub iter {
+  my $ar = shift;
+  return sub {
+    return shift @$ar;
+  };
+}
+
+for my $test ( @SCHEDULE ) {
+  my $name = $test->{name};
+  ok my $yaml = Data::YAML::Reader->new, "$name: Created";
+  isa_ok $yaml, 'Data::YAML::Reader';
+
+  #     diag "$name\n";
+
+  # unless ( $test->{in} ) {
+  #     pass for 1 .. 2;
+  #     use YAML;
+  #     diag "Input for test:\n";
+  #     diag( Dump( $test->{out} ) );
+  #     next;
+  # }
+
+  my $source = join( "\n", @{ $test->{in} } ) . "\n";
+
+  my $iter = iter( $test->{in} );
+  my $got = eval { $yaml->read( $iter ) };
+
+  my $raw = $yaml->get_raw;
+
+  if ( my $err = $test->{error} ) {
+    unless ( like $@, $err, "$name: Error message" ) {
+      diag "Error: $@\n";
+    }
+    ok !$got, "$name: No result";
+    pass;
+  }
+  else {
+    my $want = $test->{out};
+    unless ( ok !$@, "$name: No error" ) {
+      diag "Error: $@\n";
+    }
+    unless ( is_deeply $got, $want, "$name: Result matches" ) {
+      local $Data::Dumper::Useqq = $Data::Dumper::Useqq = 1;
+      diag( Data::Dumper->Dump( [$got],  ['$got'] ) );
+      diag( Data::Dumper->Dump( [$want], ['$expected'] ) );
+    }
+    is $raw, $source, "$name: Captured source matches";
+  }
+}
diff --git a/test/30-output.py b/test/30-output.py
new file mode 100644
index 0000000..56cfb0a
--- /dev/null
+++ b/test/30-output.py
@@ -0,0 +1,107 @@
+use strict;
+use warnings;
+use Test::More tests => 9;
+use Data::Dumper;
+
+use Data::YAML::Writer;
+
+my $out = [
+  "---",
+  "bill-to:",
+  "  address:",
+  "    city: 'Royal Oak'",
+  "    lines: \"458 Walkman Dr.\\nSuite #292\\n\"",
+  "    postal: 48046",
+  "    state: MI",
+  "  family: Dumars",
+  "  given: Chris",
+  "comments: \"Late afternoon is best. Backup contact is Nancy Billsmer \@ 338-4338\\n\"",
+  "date: 2001-01-23",
+  "invoice: 34843",
+  "product:",
+  "  -",
+  "    description: Basketball",
+  "    price: 450.00",
+  "    quantity: 4",
+  "    sku: BL394D",
+  "  -",
+  "    description: 'Super Hoop'",
+  "    price: 2392.00",
+  "    quantity: 1",
+  "    sku: BL4438H",
+  "tax: 251.42",
+  "total: 4443.52",
+  "...",
+];
+
+my $in = {
+  'bill-to' => {
+    'given'   => 'Chris',
+    'address' => {
+      'city'   => 'Royal Oak',
+      'postal' => '48046',
+      'lines'  => "458 Walkman Dr.\nSuite #292\n",
+      'state'  => 'MI'
+    },
+    'family' => 'Dumars'
+  },
+  'invoice' => '34843',
+  'date'    => '2001-01-23',
+  'tax'     => '251.42',
+  'product' => [
+    {
+      'sku'         => 'BL394D',
+      'quantity'    => '4',
+      'price'       => '450.00',
+      'description' => 'Basketball'
+    },
+    {
+      'sku'         => 'BL4438H',
+      'quantity'    => '1',
+      'price'       => '2392.00',
+      'description' => 'Super Hoop'
+    }
+  ],
+  'comments' =>
+   "Late afternoon is best. Backup contact is Nancy Billsmer @ 338-4338\n",
+  'total' => '4443.52'
+};
+
+my @buf1 = ();
+my @buf2 = ();
+my $buf3 = '';
+
+my @destination = (
+  {
+    name        => 'Array reference',
+    destination => \@buf1,
+    normalise   => sub { return \@buf1 },
+  },
+  {
+    name        => 'Closure',
+    destination => sub { push @buf2, shift },
+    normalise => sub { return \@buf2 },
+  },
+  {
+    name        => 'Scalar',
+    destination => \$buf3,
+    normalise   => sub {
+      my @ar = split( /\n/, $buf3 );
+      return \@ar;
+    },
+  },
+);
+
+for my $dest ( @destination ) {
+  my $name = $dest->{name};
+  ok my $yaml = Data::YAML::Writer->new, "$name: Created";
+  isa_ok $yaml, 'Data::YAML::Writer';
+
+  $yaml->write( $in, $dest->{destination} );
+  my $got = $dest->{normalise}->();
+  unless ( is_deeply $got, $out, "$name: Result matches" ) {
+    local $Data::Dumper::Useqq = $Data::Dumper::Useqq = 1;
+    diag( Data::Dumper->Dump( [$got], ['$got'] ) );
+    diag( Data::Dumper->Dump( [$out], ['$expected'] ) );
+  }
+}
diff --git a/test/40-writer.py b/test/40-writer.py
new file mode 100644
index 0000000..4d70780
--- /dev/null
+++ b/test/40-writer.py
@@ -0,0 +1,200 @@
+#!/usr/bin/perl
+
+use strict;
+use warnings;
+use Test::More;
+use Data::Dumper;
+use Data::YAML::Reader;
+use Data::YAML::Writer;
+
+my @SCHEDULE;
+
+BEGIN {
+  @SCHEDULE = (
+    {
+      name => 'Simple scalar',
+      in   => 1,
+      out  => [ '--- 1', '...', ],
+    },
+    {
+      name => 'Undef',
+      in   => undef,
+      out  => [ '--- ~', '...', ],
+    },
+    {
+      name => 'Unprintable',
+      in   => "\x01\n\t",
+      out  => [ '--- "\x01\n\t"', '...', ],
+    },
+    {
+      name => 'Simple array',
+      in   => [ 1, 2, 3 ],
+      out  => [ '---', '- 1', '- 2', '- 3', '...', ],
+    },
+    {
+      name => 'Array, two elements, undef',
+      in   => [ undef, undef ],
+      out  => [ '---', '- ~', '- ~', '...', ],
+    },
+    {
+      name => 'Nested array',
+      in   => [ 1, 2, [ 3, 4 ], 5 ],
+      out =>
+       [ '---', '- 1', '- 2', '-', '  - 3', '  - 4', '- 5', '...', ],
+    },
+    {
+      name => 'Simple hash',
+      in   => { one => '1', two => '2', three => '3' },
+      out => [ '---', 'one: 1', 'three: 3', 'two: 2', '...', ],
+    },
+    {
+      name => 'Nested hash',
+      in   => {
+        one  => '1',
+        two  => '2',
+        more => { three => '3', four => '4' }
+      },
+      out => [
+        '---',
+        'more:',
+        '  four: 4',
+        '  three: 3',
+        'one: 1',
+        'two: 2',
+        '...',
+      ],
+    },
+    {
+      name => 'Unprintable key',
+      in   => { one => '1', "\x02" => '2', three => '3' },
+      out => [ '---', '"\x02": 2', 'one: 1', 'three: 3', '...', ],
+    },
+    {
+      name => 'Empty key',
+      in   => { '' => 'empty' },
+      out  => [ '---', "'': empty", '...', ],
+    },
+    {
+      name => 'Empty value',
+      in   => { '' => '' },
+      out  => [ '---', "'': ''", '...', ],
+    },
+    {
+      name => 'Complex',
+      in   => {
+        'bill-to' => {
+          'given'   => 'Chris',
+          'address' => {
+            'city'   => 'Royal Oak',
+            'postal' => '48046',
+            'lines'  => "458 Walkman Dr.\nSuite #292\n",
+            'state'  => 'MI'
+          },
+          'family' => 'Dumars'
+        },
+        'invoice' => '34843',
+        'date'    => '2001-01-23',
+        'tax'     => '251.42',
+        'product' => [
+          {
+            'sku'         => 'BL394D',
+            'quantity'    => '4',
+            'price'       => '450.00',
+            'description' => 'Basketball'
+          },
+          {
+            'sku'         => 'BL4438H',
+            'quantity'    => '1',
+            'price'       => '2392.00',
+            'description' => 'Super Hoop'
+          }
+        ],
+        'comments' =>
+         "Late afternoon is best. Backup contact is Nancy Billsmer @ 338-4338\n",
+        'total' => '4443.52'
+      },
+      out => [
+        "---",
+        "bill-to:",
+        "  address:",
+        "    city: 'Royal Oak'",
+        "    lines: \"458 Walkman Dr.\\nSuite #292\\n\"",
+        "    postal: 48046",
+        "    state: MI",
+        "  family: Dumars",
+        "  given: Chris",
+        "comments: \"Late afternoon is best. Backup contact is Nancy Billsmer \@ 338-4338\\n\"",
+        "date: 2001-01-23",
+        "invoice: 34843",
+        "product:",
+        "  -",
+        "    description: Basketball",
+        "    price: 450.00",
+        "    quantity: 4",
+        "    sku: BL394D",
+        "  -",
+        "    description: 'Super Hoop'",
+        "    price: 2392.00",
+        "    quantity: 1",
+        "    sku: BL4438H",
+        "tax: 251.42",
+        "total: 4443.52",
+        "...",
+      ],
+    },
+  );
+
+  plan tests => @SCHEDULE * 5;
+}
+
+sub iter {
+  my $ar = shift;
+  return sub {
+    return shift @$ar;
+  };
+}
+
+for my $test ( @SCHEDULE ) {
+  my $name = $test->{name};
+  ok my $yaml = Data::YAML::Writer->new, "$name: Created";
+  isa_ok $yaml, 'Data::YAML::Writer';
+
+  my $got = [];
+  my $writer = sub { push @$got, shift };
+
+  my $data = $test->{in};
+
+  eval { $yaml->write( $data, $writer ) };
+
+  if ( my $err = $test->{error} ) {
+    unless ( like $@, $err, "$name: Error message" ) {
+      diag "Error: $@\n";
+    }
+    is_deeply $got, [], "$name: No result";
+    pass;
+  }
+  else {
+    my $want = $test->{out};
+    unless ( ok !$@, "$name: No error" ) {
+      diag "Error: $@\n";
+    }
+    unless ( is_deeply $got, $want, "$name: Result matches" ) {
+      local $Data::Dumper::Useqq = $Data::Dumper::Useqq = 1;
+      diag( Data::Dumper->Dump( [$got],  ['$got'] ) );
+      diag( Data::Dumper->Dump( [$want], ['$expected'] ) );
+    }
+
+    my $yr = Data::YAML::Reader->new;
+
+    # Now try parsing it
+    my $reader = sub { shift @$got };
+    my $parsed = $yr->read( $reader );
+
+    unless ( is_deeply $parsed, $data, "$name: Reparse OK" ) {
+      local $Data::Dumper::Useqq = $Data::Dumper::Useqq = 1;
+      diag( Data::Dumper->Dump( [$parsed], ['$parsed'] ) );
+      diag( Data::Dumper->Dump( [$data],   ['$data'] ) );
+    }
+  }
+}
+
diff --git a/test/pod-coverage.py b/test/pod-coverage.py
new file mode 100644
index 0000000..c412996
--- /dev/null
+++ b/test/pod-coverage.py
@@ -0,0 +1,9 @@
+#!perl -T
+
+use Test::More;
+eval "use Test::Pod::Coverage 1.04";
+plan skip_all =>
+ "Test::Pod::Coverage 1.04 required for testing POD coverage"
+ if $@;
+all_pod_coverage_ok(
+  { private => [ qr{^BUILD|DEMOLISH|AUTOMETHOD|START$}, qr{^_} ] } );
diff --git a/test/pod.py b/test/pod.py
new file mode 100644
index 0000000..976d7cd
--- /dev/null
+++ b/test/pod.py
@@ -0,0 +1,6 @@
+#!perl -T
+
+use Test::More;
+eval "use Test::Pod 1.14";
+plan skip_all => "Test::Pod 1.14 required for testing POD" if $@;
+all_pod_files_ok();