use strict;
use warnings;

use Test::More tests => 36;
use File::Temp 'tempfile';
use Text::CSV_XS;

## create a temp CSV file

my ($tmp_fh, $tmp_file) = tempfile( UNLINK => 1 );

print $tmp_fh <<EOCSV;
foo,Bar,BAZ
potato,monkey,rutabaga
fred,barney,wilma
EOCSV

close $tmp_fh;


## load module

use_ok('Tie::Handle::CSV');

## HEADER IN FILE

## test tie interface

eval { tie(*FH, 'Tie::Handle::CSV', '', header => 1, open_mode => '<') };
ok( $@, 'tie - bad - header' );
eval { tie(*FH, 'Tie::Handle::CSV', $tmp_file, header => 1, csv_parser => []) };
ok( $@, 'tie - bad - header' );
ok(  tie(*FH, 'Tie::Handle::CSV', $tmp_file, header => 1, force_lower => 1, key_case => 'lower', csv_parser => Text::CSV_XS->new() ), 'tie - good - header' );

## test new() interface

my $csv_fh;

ok(  $csv_fh = Tie::Handle::CSV->new($tmp_file, header => 1, force_lower => 1, openmode => '>>', open_mode => '<'), 'new - good - header' );
eval { Tie::Handle::CSV->new('', header => 1) };
ok( $@, 'new - bad - header' );

## test reading with no header

my $line1 = <FH>;
my $line2 = <FH>;
my $line3 = <FH>;

ok( ref $line1 eq 'Tie::Handle::CSV::Hash',              'tie - ref' );

ok( $line1 eq 'potato,monkey,rutabaga', 'tie - line1 - stringify' );
ok( $line2 eq 'fred,barney,wilma',      'tie - line2 - stringify' );
ok(! defined $line3,                    'tie - line3 - undef' );

is( $line1->{'foo'}, 'potato',   'tie - line1 - foo' );
is( $line1->{'bar'}, 'monkey',   'tie - line1 - bar' );
is( $line1->{'baz'}, 'rutabaga', 'tie - line1 - baz' );
is( $line1->{'not'}, undef,      'tie - line1 - not' );

is( $line2->{'foo'}, 'fred',     'tie - line2 - foo' );
is( $line2->{'bar'}, 'barney',   'tie - line2 - bar' );
is( $line2->{'baz'}, 'wilma',    'tie - line2 - baz' );
is( $line2->{'not'}, undef,      'tie - line2 - not' );

$line1 = <$csv_fh>;
$line2 = <$csv_fh>;
$line3 = <$csv_fh>;

ok( ref $line1 eq 'Tie::Handle::CSV::Hash',              'new - ref' );

is( $csv_fh->header, 'foo,Bar,BAZ',     'new - header - stringify' );

is_deeply( [ @{ $csv_fh->header } ], [ 'foo', 'Bar', 'BAZ' ], 'new - header - array' );  

ok( $line1 eq 'potato,monkey,rutabaga', 'new - line1 - stringify' );
ok( $line2 eq 'fred,barney,wilma',      'new - line2 - stringify' );
ok(! defined $line3,                    'new - line3 - undef' );

is( $line1->{'foo'}, 'potato',   'new - line1 - foo' );
is( $line1->{'bar'}, 'monkey',   'new - line1 - bar' );
is( $line1->{'baz'}, 'rutabaga', 'new - line1 - baz' );
is( $line1->{'not'}, undef,      'new - line1 - not' );

is( $line2->{'foo'}, 'fred',     'new - line2 - foo' );
is( $line2->{'bar'}, 'barney',   'new - line2 - bar' );
is( $line2->{'baz'}, 'wilma',    'new - line2 - baz' );
is( $line2->{'not'}, undef,      'new - line2 - not' );

ok( exists $line2->{'baz'},    'new - line2 - baz' );
is( delete $line2->{'baz'}, 'wilma',    'new - line2 - baz' );

ok( close(FH),      'tie - close' );
ok( close($csv_fh), 'new - close' );