WWW::Mechanize::TreeBuUserrContributed Perl DocuWWW::Mechanize::TreeBuilder(3)NAMEWWW::Mechanize::TreeBuilderSYNOPSIS
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.
perl v5.14.1 2010-09-23 WWW::Mechanize::TreeBuilder(3)
