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|
use strict;
use warnings;
use Test::More;
use DateTime::Format::Builder::Parser;
{
my $new_sub = sub {
my $x = shift;
sub { $_[1] . $x }
};
my @cbs = ( map { $new_sub->($_) } qw( a b c d e f g ) );
my $cb = DateTime::Format::Builder::Parser->merge_callbacks(@cbs);
is( $cb->( input => "x" ) => "xabcdefg", "Callback chaining works." );
my $cbr = DateTime::Format::Builder::Parser->merge_callbacks( \@cbs );
is(
$cbr->( input => "x" ) => "xabcdefg",
"Callback chaining works on ref."
);
}
{
my $inout = sub { $_[0] . "foo" };
my $cb = DateTime::Format::Builder::Parser->merge_callbacks($inout);
is( $cb->("foo") => "foofoo", "Single callback works." );
}
{
my $empty = DateTime::Format::Builder::Parser->merge_callbacks(undef);
ok( !defined $empty, "Given undef, do bugger all." );
$empty = DateTime::Format::Builder::Parser->merge_callbacks();
ok( !defined $empty, "Given nothing, do bugger all." );
$empty = DateTime::Format::Builder::Parser->merge_callbacks( [] );
ok( !defined $empty, "Given empty arrayref, do bugger all." );
}
{
my $error = eval {
DateTime::Format::Builder::Parser->merge_callbacks( { foo => 4 } );
};
ok( $@, "Correctly faulted on bad arguments." );
}
done_testing();
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