GSP
Quick Navigator

Search Site

Unix VPS
A - Starter
B - Basic
C - Preferred
D - Commercial
MPS - Dedicated
Previous VPSs
* Sign Up! *

Support
Contact Us
Online Help
Handbooks
Domain Status
Man Pages

FAQ
Virtual Servers
Pricing
Billing
Technical

Network
Facilities
Connectivity
Topology Map

Miscellaneous
Server Agreement
Year 2038
Credits
 

USA Flag

 

 

Man Pages


Manual Reference Pages  -  TEST2::UTIL::GRABBER (3)

.ds Aq ’

NAME

Test2::Util::Grabber - Object used to temporarily intercept all events.

CONTENTS

DESCRIPTION

Once created this object will intercept and stash all events sent to the shared Test2::Hub object. Once the object is destroyed events will once again be sent to the shared hub.

SYNOPSIS



    use Test2 qw/Core Grab/;

    my $grab = grab();

    # Generate some events, they are intercepted.
    ok(1, "pass");
    ok(0, "fail");

    my $events_a = $grab->flush;

    # Generate some more events, they are intercepted.
    ok(1, "pass");
    ok(0, "fail");

    # Same as flush, except it destroys the grab object.
    my $events_b = $grab->finish;



After calling finish() the grab object is destroyed and $grab is set to undef. $events_a is an arrayref with the first 2 events. $events_b is an arrayref with the second 2 events.

EXPORTS

$grab = grab() This lets you intercept all events for a section of code without adding anything to your call stack. This is useful for things that are sensitive to changes in the stack depth.



    my $grab = grab();
        ok(1, foo);
        ok(0, bar);

    # $grab is magically undef after this.
    my $events = $grab->finish;

    is(@$events, 2, "grabbed 2 events.");



When you call finish() the $grab object will automagically undef itself, but only for the reference used in the method call. If you have other references to the $grab object they will not be undef’d.

If the $grab object is destroyed without calling finish(), it will automatically clean up after itself and restore the parent hub.



    {
        my $grab = grab();
        # Things are grabbed
    }
    # Things are back to normal



By default the hub used has no_ending set to true. This will prevent the hub from enforcing that you issued a plan and ran at least 1 test. You can turn enforcement back one like this:



    $grab->hub->set_no_ending(0);



With no_ending turned off, finish will run the post-test checks to enforce the plan and that tests were run. In many cases this will result in additional events in your events array.

METHODS

$grab = $class->new() Create a new grab object, immediately starts intercepting events.
$ar = $grab->flush() Get an arrayref of all the events so far, clearing the grab objects internal list.
$ar = $grab->events() Get an arrayref of all events so far, does not clear the internal list.
$ar = $grab->finish() Get an arrayref of all the events, then destroy the grab object.
$hub = $grab->hub() Get the hub that is used by the grab event.

ENDING BEHAVIOR

By default the hub used has no_ending set to true. This will prevent the hub from enforcing that you issued a plan and ran at least 1 test. You can turn enforcement back one like this:



    $grab->hub->set_no_ending(0);



With no_ending turned off, finish will run the post-test checks to enforce the plan and that tests were run. In many cases this will result in additional events in your events array.

SEE ALSO

Test2::Tools::Intercept - Accomplish the same thing, but using blocks instead.

SOURCE

The source code repository for Test2 can be found at http://github.com/Test-More/Test-Stream/.

MAINTAINERS

Chad Granum <exodist@cpan.org>

AUTHORS

Chad Granum <exodist@cpan.org>

COPYRIGHT

Copyright 2015 Chad Granum <exodist7@gmail.com>.

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

See http://dev.perl.org/licenses/

POD ERRORS

Hey! <B>The above document had some coding errors, which are explained below:B>
Around line 125: ’=item’ outside of any ’=over’
Around line 163: You forgot a ’=back’ before ’=head1’
Search for    or go to Top of page |  Section 3 |  Main Index


perl v5.20.3 TEST2::UTIL::GRABBER (3) 2016-03-20

Powered by GSP Visit the GSP FreeBSD Man Page Interface.
Output converted with manServer 1.07.