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Test::Builder::Module(3)Perl
NAME
Test::Builder::Module - Base class for test modules
SYNOPSIS
# Emulates Test::Simple
package Your::Module;
my $CLASS = __PACKAGE__;
use base 'Test::Builder::Module';
@EXPORT = qw(ok);
sub ok ($;$) {
my $tb = $CLASS->builder;
return $tb->ok(@_);
}
1;
DESCRIPTION
This is a superclass for Test::Builder-based modules. It provides a
handful of common functionality and a method of getting at the underlying
Test::Builder object.
Importing
Test::Builder::Module is a subclass of Exporter which means your module is
also a subclass of Exporter. @EXPORT, @EXPORT_OK, etc... all act
normally.
A few methods are provided to do the "use Your::Module tests =" 23> part
for you.
import
Test::Builder::Module provides an import() method which acts in the same
basic way as Test::More's, setting the plan and controling exporting of
functions and variables. This allows your module to set the plan
independent of Test::More.
All arguments passed to import() are passed onto
"Your::Module->builder->plan()" with the exception of "import ="[qw(things
to import)]>.
use Your::Module import => [qw(this that)], tests => 23;
says to import the functions this() and that() as well as set the plan to
be 23 tests.
import() also sets the exported_to() attribute of your builder to be the
caller of the import() function.
Additional behaviors can be added to your import() method by overriding
import_extra().
import_extra
Your::Module->import_extra(\@import_args);
import_extra() is called by import(). It provides an opportunity for you
to add behaviors to your module based on its import list.
Any extra arguments which shouldn't be passed on to plan() should be
stripped off by this method.
See Test::More for an example of its use.
NOTE This mechanism is VERY ALPHA AND LIKELY TO CHANGE as it feels like a
bit of an ugly hack in its current form.
Builder
Test::Builder::Module provides some methods of getting at the underlying
Test::Builder object.
builder
my $builder = Your::Class->builder;
This method returns the Test::Builder object associated with Your::Class.
It is not a constructor so you can call it as often as you like.
This is the preferred way to get the Test::Builder object. You should not
get it via "Test::Builder->new" as was previously recommended.
The object returned by builder() may change at runtime so you should call
builder() inside each function rather than store it in a global.
sub ok {
my $builder = Your::Class->builder;
return $builder->ok(@_);
}
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