1Test2::Tools::Grab(3) User Contributed Perl DocumentationTest2::Tools::Grab(3)
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NAME

6       Test2::Tools::Grab - Temporarily intercept all events without adding a
7       scope level.
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DESCRIPTION

10       This package provides a function that returns an object that grabs all
11       events.  Once the object is destroyed events will once again be sent to
12       the main hub.
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SYNOPSIS

15           use Test2::Tools::Grab;
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17           my $grab = grab();
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19           # Generate some events, they are intercepted.
20           ok(1, "pass");
21           ok(0, "fail");
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23           my $events_a = $grab->flush;
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25           # Generate some more events, they are intercepted.
26           ok(1, "pass");
27           ok(0, "fail");
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29           my $events_b = $grab->finish;
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EXPORTS

32       $grab = grab()
33           This lets you intercept all events for a section of code without
34           adding anything to your call stack. This is useful for things that
35           are sensitive to changes in the stack depth.
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37               my $grab = grab();
38                   ok(1, 'foo');
39                   ok(0, 'bar');
40
41               my $events = $grab->finish;
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43               is(@$events, 2, "grabbed 2 events.");
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45           If the $grab object is destroyed without calling "finish()", it
46           will automatically clean up after itself and restore the parent
47           hub.
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49               {
50                   my $grab = grab();
51                   # Things are grabbed
52               }
53               # Things are back to normal
54
55           By default the hub used has "no_ending" set to true. This will
56           prevent the hub from enforcing that you issued a plan and ran at
57           least 1 test. You can turn enforcement back one like this:
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59               $grab->hub->set_no_ending(0);
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61           With "no_ending" turned off, "finish" will run the post-test checks
62           to enforce the plan and that tests were run. In many cases this
63           will result in additional events in your events array.
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SEE ALSO

66       Test2::Util::Grabber - The object constructed and returned by this
67       tool.
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SOURCE

70       The source code repository for Test2 can be found at
71       https://github.com/Test-More/Test2-Suite/.
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MAINTAINERS

74       Chad Granum <exodist@cpan.org>
75

AUTHORS

77       Chad Granum <exodist@cpan.org>
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80       Copyright 2018 Chad Granum <exodist@cpan.org>.
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82       This program is free software; you can redistribute it and/or modify it
83       under the same terms as Perl itself.
84
85       See http://dev.perl.org/licenses/
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89perl v5.30.1                      2020-01-31             Test2::Tools::Grab(3)
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