use t::TestYAML;
use Test::More;
use FindBin '$RealBin';

chdir $RealBin;

unless ( -w $RealBin ) {
    plan skip_all => "Can't write to $RealBin";
    exit;
}

plan tests => 6;

*::DumpFile = *YAML::Syck::DumpFile;

sub file_contents_is {
    my ( $fn, $expected, $test_name ) = @_;
    local *FH;
    open FH, $fn or die $!;
    my $contents = do { local $/; <FH> };
    is( $contents, $expected, $test_name );
    close FH;
}

my $scalar        = 'a simple scalar';
my $expected_yaml = <<YAML;
--- a simple scalar
YAML

# using file name
{
    DumpFile( 'dumpfile.yml', $scalar );
    file_contents_is( 'dumpfile.yml', $expected_yaml, 'DumpFile works with filenames' );
    unlink 'dumpfile.yml' or die $!;
}

# dump to IO::File
{
    require IO::File;
    my $h = IO::File->new('>dumpfile.yml');
    DumpFile( $h, $scalar );
    close $h;
    file_contents_is( 'dumpfile.yml', $expected_yaml, 'DumpFile works with IO::File' );
    unlink 'dumpfile.yml' or die $!;
}

# dump to indirect file handles
SKIP: {
    skip "indirect file handles require 5.6 or later", 1 unless $] >= 5.006000;
    eval q[

    open(my $h, '>', 'dumpfile.yml');
    DumpFile($h, $scalar);
    close $h;
    file_contents_is('dumpfile.yml', $expected_yaml, 'DumpFile works with indirect file handles');
    unlink 'dumpfile.yml' or die $!;

];
}

# dump to ordinary filehandles
{
    local *H;
    open( H, '>dumpfile.yml' );
    DumpFile( *H, $scalar );
    close(H);
    file_contents_is( 'dumpfile.yml', $expected_yaml, 'DumpFile works with ordinary file handles' );
    unlink 'dumpfile.yml' or die $!;
}

# dump to ordinary filehandles (refs)
{
    local *H;
    open( H, '>dumpfile.yml' );
    DumpFile( \*H, $scalar );
    close(H);
    file_contents_is( 'dumpfile.yml', $expected_yaml, 'DumpFile works with glob refs' );
    unlink 'dumpfile.yml' or die $!;
}

# dump to "in memory" file
SKIP: {
    skip "in-memory files require 5.8 or later", 1 unless $] >= 5.00800;
    eval q[

    open(my $h, '>', \my $s);
    DumpFile($h, $scalar);
    close($h);
    is($s, $expected_yaml, 'DumpFile works with in-memory files');

];
}