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#!/usr/local/bin/perl -w
# $Id: trace_filehandle.t,v 1.5 2004/12/15 15:47:35 johna Exp $
use strict;
use Test::More tests => 7;
# Find local libs unless running under Test::Harness
BEGIN { unshift @INC, -d 't' ? 'lib' : '../lib' unless grep /\bblib\b/, @INC }
require_ok('Log::Trace');
my $test_file = __FILE__;
my $timestamp = qr|\d{4}(?:-\d\d){2} \d\d(?::\d\d){2}(?:\.\d{6})?|;
my $message;
tie *TEST_HANDLE, 'CapturingFileHandle';
import Log::Trace print => \*TEST_HANDLE;
$message = 'Testing output to a filehandle';
TRACE($message);
is (<TEST_HANDLE>, "$message\n", 'message traced to supplied filehandle');
import Log::Trace print => \*TEST_HANDLE, {Level => 1};
$message = $0;
TRACE({Level => 1}, $message);
is (<TEST_HANDLE>, "$message\n", 'level 1 trace to filehandle ok');
TRACE({Level => 99}, $message);
is (<TEST_HANDLE>, undef, 'level 99 message not traced ok');
import Log::Trace print => \*TEST_HANDLE, {Verbose => 0};
TRACE(join '', reverse 0..9);
is (<TEST_HANDLE>, "9876543210\n", 'verbose:0 is also not verbose');
import Log::Trace print => \*TEST_HANDLE, {Verbose => 1};
TRACE(join '', ('a'..'f'));
like (<TEST_HANDLE>, qr/\Amain::__ANON__ \(\d+\) :: abcdef\n\Z/,
'verbose:1 adds some caller information');
import Log::Trace print => \*TEST_HANDLE, {Verbose => 2};
TRACE(join '', ('a'..'f'));
like (<TEST_HANDLE>, qr/\A\Q$test_file\E: main::__ANON__ \(\d+\) \[$timestamp\] abcdef\n\Z/,
'verbose:2 adds timstamp and file info');
sub TRACE {}
# A basic tied handle
package CapturingFileHandle;
sub TIEHANDLE {
bless \do {my $string = ''}, shift;
}
sub PRINT {
my $self = shift;
$$self .= shift;
}
sub READLINE {
my $self = shift;
if (my $data = $$self) {
$self->reset;
return $data
} else {
return;
}
}
sub reset {
my $self = shift;
$$self = '';
}
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