# -*- perl -*-
#$Id: 04_body_suppress.t 1121 2007-01-01 14:43:51Z jimk $
# t/04_body_suppress.tt - test what happens when body_suppress element is supplied
use strict;
use warnings;
use Test::More tests => 34;
use_ok( 'List::RewriteElements' );
use_ok( 'Cwd' );
use_ok( 'File::Temp', qw| tempdir | );
use_ok( 'Tie::File' );
use_ok( 'File::Copy' );
use lib ( "t/testlib" );
use_ok( 'IO::Capture::Stdout' );
use Carp;;
my $lre;
my @lines;
$lre = List::RewriteElements->new ( {
list => [ map {"$_\n"} (1..10) ],
body_rule => sub {
my $record = shift;
return (10 * $record);
},
body_suppress => sub {
my $record = shift;
chomp $record;
return if $record eq '10';
},
} );
isa_ok ($lre, 'List::RewriteElements');
my $cap = IO::Capture::Stdout->new();
$cap->start();
$lre->generate_output();
$cap->stop();
chomp( @lines = $cap->read() );
is($lines[0], q{10}, "First element of list is correct");
is($lines[-1], q{90}, "Last element of list is correct");
{
my $cwd = cwd();
my $tdir = tempdir( CLEANUP => 1);
ok(chdir $tdir, 'changed to temp directory for testing');
my $output = "./output";
$lre = List::RewriteElements->new ( {
list => [ map {"$_\n"} (1..10) ],
body_rule => sub {
my $record = shift;
return (10 * $record);
},
body_suppress => sub {
my $record = shift;
chomp $record;
return if $record eq '10';
},
output_file => $output,
} );
isa_ok ($lre, 'List::RewriteElements');
is($lre->get_records_deleted(), 0,
"Count of records deleted not yet determined");
is($lre->get_total_records(), 0,
"Count of records out not yet determined");
is($lre->get_records_changed(), 0,
"Count of records changed not yet determined");
is($lre->get_records_unchanged(), 0,
"Count of records unchanged not yet determined");
is($lre->get_total_rows(), 0,
"Count of rows out not yet determined");
$lre->generate_output();
ok(-f $output, "Output file created");
is($lre->get_records_deleted(), 1,
"Confirmed count of records deleted");
is($lre->get_total_records(), 9,
"Confirmed count of records out");
is($lre->get_records_changed(), 9,
"Count of records changed confirmed");
is($lre->get_records_unchanged(), 0,
"Count of records unchanged confirmed");
is($lre->get_total_rows(), 9,
"Confirmed count of rows out");
my @lines;
open my $FH, $output or croak "Unable to open $output for reading";
while (<$FH>) {
chomp;
push @lines, $_;
}
close $FH or croak "Unable to close $output";
is($lines[0], q{10}, "First element of list is correct");
is($lines[-1], q{90}, "Last element of list is correct");
ok(chdir $cwd, 'changed back to original directory after testing');
}
# In case below, body rule requires fetching an item from external
# environment, thereby changing the state of the external environment.
{
my $cwd = cwd();
my $tdir = tempdir( CLEANUP => 1);
ok(chdir $tdir, 'changed to temp directory for testing');
my $dupe = qq{$tdir/complex.txt};
copy(qq{$cwd/t/testlib/complex.txt}, $dupe);
ok(-f $dupe, "sample file copied correctly");
my @greeks;
tie @greeks, 'Tie::File', $dupe, recsep => "\n";
my $numcount = scalar(@greeks);
my $snatch_number_ref = sub {
return (shift @greeks);
};
my $output = "./output";
$lre = List::RewriteElements->new ( {
list => [ map {"$_\n"} (1..10) ],
body_rule => sub {
my $record = shift;
my $rv;
chomp $record;
if ($record eq '9') {
$rv = &{$snatch_number_ref};
} else {
$rv = (10 * $record);
}
return $rv;
},
body_suppress => sub {
my $record = shift;
chomp $record;
return if $record eq '10';
},
output_file => $output,
} );
isa_ok ($lre, 'List::RewriteElements');
$lre->generate_output();
ok(-f $output, "Output file created");
my @lines;
open my $FH, $output or croak "Unable to open $output for reading";
while (<$FH>) {
chomp;
push @lines, $_;
}
close $FH or croak "Unable to close $output";
is($lines[0], q{10}, "First element of list is correct");
is($lines[-2], q{80}, "Next to last element of list is correct");
is($lines[-1], q{alpha}, "Last element of list is correct");
is(scalar(@greeks), $numcount - 1,
"Count of items in external file is correct");
untie @greeks;
ok(chdir $cwd, 'changed back to original directory after testing');
}