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use strict; use warnings;
BEGIN { require './t/lib/ok.pl' }
use Text::Tabs;
use Text::Wrap;
print "1..4\n";
my $w; $SIG{'__WARN__'} = sub { $w = join '', @_ };
sub cleanup { diag $w; undef $w }
expand( undef );
ok( !defined $w, 'expand accepts undef silently' ) or cleanup;
unexpand( undef, undef, undef );
ok( !defined $w, 'unexpand accepts undef silently' ) or cleanup;
wrap( undef, undef, undef, ( ( "abc " x 20 ) . "abc\n" ) x 5, undef );
ok( !defined $w, 'wrap accepts undef silently' ) or cleanup;
fill( undef, undef, undef, ( ( "abc " x 20 ) . "abc\n" ) x 5, undef );
ok( !defined $w, 'fill accepts undef silently' ) or cleanup;
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