Test2:...stance(3perl) Perl Programmers Reference Guide Test2:...stance(3perl)
NAME
Test2::API::Instance - Object used by Test2::API under the hood
DESCRIPTION
This object encapsulates the global shared state tracked by Test2. A
single global instance of this package is stored (and obscured) by the
Test2::API package.
There is no reason to directly use this package. This package is
documented for completeness. This package can change, or go away
completely at any time. Directly using, or monkeypatching this package
is not supported in any way shape or form.
SYNOPSIS
use Test2::API::Instance;
my $obj = Test2::API::Instance->new;
$pid = $obj->pid
PID of this instance.
$obj->tid
Thread ID of this instance.
$obj->reset()
Reset the object to defaults.
$obj->load()
Set the internal state to loaded, and run and stored post-load
callbacks.
$bool = $obj->loaded
Check if the state is set to loaded.
$arrayref = $obj->post_load_callbacks
Get the post-load callbacks.
$obj->add_post_load_callback(sub { ... })
Add a post-load callback. If load() has already been called then the
callback will be immediately executed. If load() has not been called
then the callback will be stored and executed later when load() is
called.
$hashref = $obj->contexts()
Get a hashref of all active contexts keyed by hub id.
$arrayref = $obj->context_acquire_callbacks
Get all context acquire callbacks.
$arrayref = $obj->context_init_callbacks
Get all context init callbacks.
$arrayref = $obj->context_release_callbacks
Get all context release callbacks.
$arrayref = $obj->pre_subtest_callbacks
Get all pre-subtest callbacks.
$obj->add_context_init_callback(sub { ... })
Add a context init callback. Subs are called every time a context is
created. Subs get the newly created context as their only argument.
$obj->add_context_release_callback(sub { ... })
Add a context release callback. Subs are called every time a context
is released. Subs get the released context as their only argument.
These callbacks should not call release on the context.
$obj->add_pre_subtest_callback(sub { ... })
Add a pre-subtest callback. Subs are called every time a subtest is
going to be run. Subs get the subtest name, coderef, and any
arguments.
$obj->set_exit()
This is intended to be called in an "END { ... }" block. This will
look at test state and set $?. This will also call any end
callbacks, and wait on child processes/threads.
$obj->set_ipc_pending($val)
Tell other processes and threads there is a pending event. $val
should be a unique value no other thread/process will generate.
Note: This will also make the current process see a pending event.
$pending = $obj->get_ipc_pending()
This returns -1 if it is not possible to know.
This returns 0 if there are no pending events.
This returns 1 if there are pending events.
$timeout = $obj->ipc_timeout;
$obj->set_ipc_timeout($timeout);
How long to wait for child processes and threads before aborting.
$drivers = $obj->ipc_drivers
Get the list of IPC drivers.
$obj->add_ipc_driver($DRIVER_CLASS)
Add an IPC driver to the list. The most recently added IPC driver
will become the global one during initialization. If a driver is
added after initialization has occurred a warning will be generated:
"IPC driver $driver loaded too late to be used as the global ipc driver"
$bool = $obj->ipc_polling
Check if polling is enabled.
$obj->enable_ipc_polling
Turn on polling. This will cull events from other processes and
threads every time a context is created.
$obj->disable_ipc_polling
Turn off IPC polling.
$bool = $obj->no_wait
$bool = $obj->set_no_wait($bool)
Get/Set no_wait. This option is used to turn off process/thread
waiting at exit.
$arrayref = $obj->exit_callbacks
Get the exit callbacks.
$obj->add_exit_callback(sub { ... })
Add an exit callback. This callback will be called by set_exit().
$bool = $obj->finalized
Check if the object is finalized. Finalization happens when either
ipc(), stack(), or format() are called on the object. Once
finalization happens these fields are considered unchangeable (not
enforced here, enforced by Test2).
$ipc = $obj->ipc
Get the one true IPC instance.
$obj->ipc_disable
Turn IPC off
$bool = $obj->ipc_disabled
Check if IPC is disabled
$stack = $obj->stack
Get the one true hub stack.
$formatter = $obj->formatter
Get the global formatter. By default this is the
'Test2::Formatter::TAP' package. This could be any package that
implements the write() method. This can also be an instantiated
object.
$bool = $obj->formatter_set()
Check if a formatter has been set.
$obj->add_formatter($class)
$obj->add_formatter($obj)
Add a formatter. The most recently added formatter will become the
global one during initialization. If a formatter is added after
initialization has occurred a warning will be generated:
"Formatter $formatter loaded too late to be used as the global formatter"
$obj->set_add_uuid_via(sub { ... })
$sub = $obj->add_uuid_via()
This allows you to provide a UUID generator. If provided UUIDs will
be attached to all events, hubs, and contexts. This is useful for
storing, tracking, and linking these objects.
The sub you provide should always return a unique identifier. Most
things will expect a proper UUID string, however nothing in
Test2::API enforces this.
The sub will receive exactly 1 argument, the type of thing being
tagged 'context', 'hub', or 'event'. In the future additional things
may be tagged, in which case new strings will be passed in. These
are purely informative, you can (and usually should) ignore them.
SOURCE
The source code repository for Test2 can be found at
<https://github.com/Test-More/test-more/>.
MAINTAINERS
Chad Granum <exodist@cpan.org>
AUTHORS
Chad Granum <exodist@cpan.org>
COPYRIGHT
Copyright 2020 Chad Granum <exodist@cpan.org>.
This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
See <https://dev.perl.org/licenses/>
perl v5.40.1 2026-08-30 Test2:...stance(3perl)
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