File Coverage

blib/lib/Test/Tail/Multi.pm

Criterion	Covered	Total	%
statement	67	68	98.5
branch	16	18	88.8
condition	1	3	33.3
subroutine	16	16	100.0
pod	0	4	0.0
total	100	109	91.7

package Test::Tail::Multi;

use 5.006001;
use strict;
use warnings;

our $VERSION = '0.07';

use File::Tail;
use Test::Builder;
use Carp;

my $Test = Test::Builder->new();
our @monitored;
our $cached_output;
our $tail_delay = 5;

sub import {
  my $self = shift;
  my $caller = caller;

  no strict 'refs';
  *{$caller."::delay"} = \&delay;
  *{$caller."::add_file"} = \&add_file;
  *{$caller."::contents_like"} = \&contents_like;
  *{$caller."::contents_unlike"} = \&contents_unlike;

  my %params;
  {
    no warnings;
    %params = @_;
  }
  if (exists($params{'files'})) {
    my $contents = $params{'files'};
    if (ref($contents) eq 'ARRAY') {
      # list of files provided
      @monitored = map {File::Tail->new(name=>$_)} @$contents;
    }
    elsif (defined $contents and ($contents ne "")) {
      @monitored = File::Tail->new(name=>$contents);
    }
    else {
      croak "You must specify at least one file to monitor";
    }
  }
  delete $params{'files'};

  $Test->plan(%params) if int keys %params;
}

sub delay($;$) {
  my ($delay, $comment) = @_;
  $tail_delay = $delay if defined $delay;
  $Test->diag($comment) if defined $comment;
}


sub add_file($;$) {
  my($file, $comment) = @_;
  push @monitored, File::Tail->new($file);
  $Test->diag($comment) if defined $comment;
}

sub contents_like(&$;$) {
  my ($coderef, $pattern, $comment) = @_;
  _execute($coderef, $pattern, sub { $Test->like(@_) }, $comment);
}

sub contents_unlike(&$;$) {
  my ($coderef, $pattern, $comment) = @_;
  _execute($coderef, $pattern, sub { $Test->unlike(@_) }, $comment);
}

sub _execute {
  my ($coderef, $pattern, $testsub, $comment) = @_;
  if (defined $coderef) {
    # call code and capture output
    $coderef->();
    my ($nfound, $timeleft, @pending);
    $nfound = 1;
    while ($nfound) {
      ($nfound, $timeleft, @pending) =
        File::Tail::select(undef, undef, undef, $tail_delay, @monitored);
      last unless ($nfound);
      foreach (@pending) {
          $cached_output .=  $_->{"input"}." (".localtime(time).") ".$_->read;
      }
    }
  }
  # test vs. last output
  # (fall into here if coderef is not defined)
  $testsub->($cached_output, $pattern, $comment);
}

1;
__END__