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.\" ========================================================================
.\"
.IX Title "Test2::Formatter 3"
.TH Test2::Formatter 3 "2019-04-27" "perl v5.10.1" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.nh
.SH "NAME"
Test2::Formatter \- Namespace for formatters.
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This is the namespace for formatters. This is an empty package.
.SH "CREATING FORMATTERS"
.IX Header "CREATING FORMATTERS"
A formatter is any package or object with a \f(CW\*(C`write($event, $num)\*(C'\fR method.
.PP
.Vb 3
\&    package Test2::Formatter::Foo;
\&    use strict;
\&    use warnings;
\&
\&    sub write {
\&        my $self_or_class = shift;
\&        my ($event, $assert_num) = @_;
\&        ...
\&    }
\&
\&    sub hide_buffered { 1 }
\&
\&    sub terminate { }
\&
\&    sub finalize { }
\&
\&    sub supports_tables { return $BOOL }
\&
\&    sub new_root {
\&        my $class = shift;
\&        ...
\&        $class\->new(@_);
\&    }
\&
\&    1;
.Ve
.PP
The \f(CW\*(C`write\*(C'\fR method is a method, so it either gets a class or instance. The two
arguments are the \f(CW$event\fR object it should record, and the \f(CW$assert_num\fR
which is the number of the current assertion (ok), or the last assertion if
this event is not itself an assertion. The assertion number may be any integer 0
or greater, and may be undefined in some cases.
.PP
The \f(CW\*(C`hide_buffered()\*(C'\fR method must return a boolean. This is used to tell
buffered subtests whether or not to send it events as they are being buffered.
See \*(L"run_subtest(...)\*(R" in Test2::API for more information.
.PP
The \f(CW\*(C`terminate\*(C'\fR and \f(CW\*(C`finalize\*(C'\fR methods are optional methods called that you
can implement if the format you're generating needs to handle these cases, for
example if you are generating \s-1XML\s0 and need close open tags.
.PP
The \f(CW\*(C`terminate\*(C'\fR method is called when an event's \f(CW\*(C`terminate\*(C'\fR method returns
true, for example when a Test2::Event::Plan has a \f(CW\*(Aqskip_all\*(Aq\fR plan, or
when a Test2::Event::Bail event is sent. The \f(CW\*(C`terminate\*(C'\fR method is passed
a single argument, the Test2::Event object which triggered the terminate.
.PP
The \f(CW\*(C`finalize\*(C'\fR method is always the last thing called on the formatter, \fIexcept when C<terminate> is called for a Bail event\fR. It is passed the
following arguments:
.PP
The \f(CW\*(C`supports_tables\*(C'\fR method should be true if the formatter supports directly
rendering table data from the \f(CW\*(C`info\*(C'\fR facets. This is a newer feature and many
older formatters may not support it. When not supported the formatter falls
back to rendering \f(CW\*(C`detail\*(C'\fR instead of the \f(CW\*(C`table\*(C'\fR data.
.PP
The \f(CW\*(C`new_root\*(C'\fR method is used when constructing a root formatter. The default
is to just delegate to the regular \f(CW\*(C`new()\*(C'\fR method, most formatters can ignore
this.
.IP "\(bu" 4
The number of tests that were planned
.IP "\(bu" 4
The number of tests actually seen
.IP "\(bu" 4
The number of tests which failed
.IP "\(bu" 4
A boolean indicating whether or not the test suite passed
.IP "\(bu" 4
A boolean indicating whether or not this call is for a subtest
.PP
The \f(CW\*(C`new_root\*(C'\fR method is called when \f(CW\*(C`Test2::API::Stack\*(C'\fR Initializes the root
hub for the first time. Most formatters will simply have this call \f(CW\*(C`$class\->new\*(C'\fR, which is the default behavior. Some formatters however may want
to take extra action during construction of the root formatter, this is where
they can do that.
.SH "SOURCE"
.IX Header "SOURCE"
The source code repository for Test2 can be found at
\&\fIhttp://github.com/Test\-More/test\-more/\fR.
.SH "MAINTAINERS"
.IX Header "MAINTAINERS"
.IP "Chad Granum <exodist@cpan.org>" 4
.IX Item "Chad Granum <exodist@cpan.org>"
.SH "AUTHORS"
.IX Header "AUTHORS"
.PD 0
.IP "Chad Granum <exodist@cpan.org>" 4
.IX Item "Chad Granum <exodist@cpan.org>"
.PD
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright 2019 Chad Granum <exodist@cpan.org>.
.PP
This program is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.
.PP
See \fIhttp://dev.perl.org/licenses/\fR
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