1 files changed, 189 insertions, 0 deletions
diff --git a/lib/Log/Log4perl/Appender/TestBuffer.pm b/lib/Log/Log4perl/Appender/TestBuffer.pm
new file mode 100644
index 0000000..a929a6e
--- /dev/null
+++ b/lib/Log/Log4perl/Appender/TestBuffer.pm
@@ -0,0 +1,189 @@
+package Log::Log4perl::Appender::TestBuffer;
+our @ISA = qw(Log::Log4perl::Appender);
+
+##################################################
+# Log dispatcher writing to a string buffer
+# For testing.
+# This is like having a Log::Log4perl::Appender::TestBuffer
+##################################################
+
+our %POPULATION       = ();
+our $LOG_PRIORITY     = 0;
+our $DESTROY_MESSAGES = "";
+
+##################################################
+sub new {
+##################################################
+    my $proto  = shift;
+    my $class  = ref $proto || $proto;
+    my %params = @_;
+
+    my $self = {
+        name      => "unknown name",
+        %params,
+    };
+
+    bless $self, $class;
+
+    $self->{stderr} = exists $params{stderr} ? $params{stderr} : 1;
+    $self->{buffer} = "";
+
+    $POPULATION{$self->{name}} = $self;
+
+    return $self;
+}
+
+##################################################
+sub log {   
+##################################################
+    my $self = shift;
+    my %params = @_;
+
+    if( !defined $params{level} ) {
+        die "No level defined in log() call of " . __PACKAGE__;
+    }
+    $self->{buffer} .= "[$params{level}]: " if $LOG_PRIORITY;
+    $self->{buffer} .= $params{message};
+}
+
+###########################################
+sub clear {
+###########################################
+    my($self) = @_;
+
+    $self->{buffer} = "";
+}
+
+##################################################
+sub buffer {   
+##################################################
+    my($self, $new) = @_;
+
+    if(defined $new) {
+        $self->{buffer} = $new;
+    }
+
+    return $self->{buffer};
+}
+
+##################################################
+sub reset {   
+##################################################
+    my($self) = @_;
+
+    %POPULATION = ();
+    $self->{buffer} = "";
+}
+
+##################################################
+sub DESTROY {   
+##################################################
+    my($self) = @_;
+
+    $DESTROY_MESSAGES .= __PACKAGE__ . " destroyed";
+
+    #this delete() along with &reset() above was causing
+    #Attempt to free unreferenced scalar at 
+    #blib/lib/Log/Log4perl/TestBuffer.pm line 69.
+    #delete $POPULATION{$self->name};
+}
+
+##################################################
+sub by_name {   
+##################################################
+    my($self, $name) = @_;
+
+    # Return a TestBuffer by appender name. This is useful if
+    # test buffers are created behind our back (e.g. via the
+    # Log4perl config file) and later on we want to 
+    # retrieve an instance to query its content.
+
+    die "No name given"  unless defined $name;
+
+    return $POPULATION{$name};
+
+}
+
+1;
+
+__END__
+
+=encoding utf8
+
+=head1 NAME
+
+Log::Log4perl::Appender::TestBuffer - Appender class for testing
+
+=head1 SYNOPSIS
+
+  use Log::Log4perl::Appender::TestBuffer;
+
+  my $appender = Log::Log4perl::Appender::TestBuffer->new( 
+      name      => 'mybuffer',
+  );
+
+      # Append to the buffer
+  $appender->log( 
+      level =  > 'alert', 
+      message => "I'm searching the city for sci-fi wasabi\n" 
+  );
+
+      # Retrieve the result
+  my $result = $appender->buffer();
+
+      # Clear the buffer to the empty string
+  $appender->clear();
+
+=head1 DESCRIPTION
+
+This class is used for internal testing of C<Log::Log4perl>. It
+is a C<Log::Dispatch>-style appender, which writes to a buffer 
+in memory, from where actual results can be easily retrieved later
+to compare with expected results.
+
+Every buffer created is stored in an internal global array, and can
+later be referenced by name:
+
+    my $app = Log::Log4perl::Appender::TestBuffer->by_name("mybuffer");
+
+retrieves the appender object of a previously created buffer "mybuffer".
+To reset this global array and have it forget all of the previously 
+created testbuffer appenders (external references to those appenders
+nonwithstanding), use
+
+    Log::Log4perl::Appender::TestBuffer->reset();
+
+=head1 SEE ALSO
+
+=head1 LICENSE
+
+Copyright 2002-2013 by Mike Schilli E<lt>m@perlmeister.comE<gt> 
+and Kevin Goess E<lt>cpan@goess.orgE<gt>.
+
+This library is free software; you can redistribute it and/or modify
+it under the same terms as Perl itself. 
+
+=head1 AUTHOR
+
+Please contribute patches to the project on Github:
+
+    http://github.com/mschilli/log4perl
+
+Send bug reports or requests for enhancements to the authors via our
+
+MAILING LIST (questions, bug reports, suggestions/patches): 
+log4perl-devel@lists.sourceforge.net
+
+Authors (please contact them via the list above, not directly):
+Mike Schilli <m@perlmeister.com>,
+Kevin Goess <cpan@goess.org>
+
+Contributors (in alphabetical order):
+Ateeq Altaf, Cory Bennett, Jens Berthold, Jeremy Bopp, Hutton
+Davidson, Chris R. Donnelly, Matisse Enzer, Hugh Esco, Anthony
+Foiani, James FitzGibbon, Carl Franks, Dennis Gregorovic, Andy
+Grundman, Paul Harrington, Alexander Hartmaier  David Hull, 
+Robert Jacobson, Jason Kohles, Jeff Macdonald, Markus Peter, 
+Brett Rann, Peter Rabbitson, Erik Selberg, Aaron Straup Cope, 
+Lars Thegler, David Viner, Mac Yang.
+