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WWW::Mechanize::TreeBuilder.3pm

NAME

WWW::Mechanize::TreeBuilder

SYNOPSIS

  use Test::More tests => 2;
  use Test::WWW::Mechanize;
  use WWW::Mechanize::TreeBuilder;
  # or 
  # use WWW::Mechanize;
  # or 
  # use Test::WWW::Mechanize::Catalyst 'MyApp';
 
  my $mech = Test::WWW::Mechanize->new;
  # or
  #my $mech = Test::WWW::Mechanize::Catalyst->new;
  # etc. etc.
  WWW::Mechanize::TreeBuilder->meta->apply($mech);
 
  $mech->get_ok('/');
  is( $mech->look_down(_tag => 'p')->as_trimmed_text, 'Some text', 'It worked' );
 
 

DESCRIPTION

This module combines WWW::Mechanize and HTML::TreeBuilder. Why? Because I've seen too much code like the following:

  like($mech->content, qr{<p>some text</p>}, "Found the right tag");
 
 

Which is just all flavours of wrong - its akin to processing XML with regexps. Instead, do it like the following:

  ok($mech->look_down(_tag => 'p', sub { $_[0]->as_trimmed_text eq 'some text' })
 
 

The anon-sub there is a bit icky, but this means that anyone should happen to add attributes to the "<p>" tag (such as an id or a class) it will still work and find the right tag.

All of the methods avaiable on HTML::Element (that aren't 'private' - i.e. that don't begin with an underscore) such as "look_down" or "find" are automatically delegated to "$mech->tree" through the magic of Moose.

METHODS

Everything in WWW::Mechanize (or which ever sub class you apply it to) and all public methods from HTML::Element except those where WWW::Mechanize and HTML::Element overlap. In the case where the two classes both define a method, the one from WWW::Mechanize will be used (so that the existing behaviour of Mechanize doesn't break.)

USING XPATH OR OTHER SUBCLASSES

HTML::TreeBuilder::XPath allows you to use use xpath selectors to select elements in the tree. You can use that module by providing parameters to the moose role:

  with 'WWW::Mechanize::TreeBuilder' => {
    tree_class => 'HTML::TreeBuilder::XPath'
  };
 
  # or
  
  # NOTE: No hashref using this method
  WWW::Mechanize::TreeBuilder->meta->apply($mech,
    tree_class => 'HTML::TreeBuilder::XPath';
  );
 
 

and class will be automatically loaded for you. This class will be used to construct the tree in the following manner:

  $tree = $tree_class->new_from_content($req->decoded_content)->elementify;
 
 

You can also specify a "element_class" parameter which is the (HTML::Element sub)class that methods are proxied from. This module provides defaults for element_class when "tree_class" is ``HTML::TreeBuilder'' or ``HTML::TreeBuilder::XPath'' - it will warn otherwise.

AUTHOR

Ash Berlin "<ash@cpan.org>"

LICENSE

Same as Perl 5.8, or at your option any later version of Perl.