t/Data-Dump-Sexp.t

   1 #!/usr/bin/perl
   2 use strict;
   3 use warnings;
   4
   5 use Test::More tests => 16;
   6 use Test::Exception;
   7 BEGIN { use_ok('Data::Dump::Sexp') };
   8
   9 use Data::SExpression;
  10 use lib 't';
  11 use Opaque;
  12
  13 is dump_sexp(undef), '()';
  14 is dump_sexp([Opaque->new, 1, Opaque->new]), '(<opaque> 1 <opaque>)';
  15 is dump_sexp(5), 5;
  16 is dump_sexp('yes'), '"yes"';
  17 is dump_sexp('"ha\\ha\\ha"'), '"\\"ha\\\\ha\\\\ha\\""';
  18 is dump_sexp([1, "yes", 2]), '(1 "yes" 2)';
  19 is dump_sexp({b => 5, a => "yes"}), '(("a" . "yes") ("b" . 5))';
  20
  21 is dump_sexp(\42), 42;
  22 is dump_sexp(\\\\"aaaa"), '"aaaa"';
  23 is dump_sexp(\substr "abcd", 1, 2), '"bc"';
  24
  25 throws_ok { dump_sexp {key => sub{}} } qr/Cannot dump value of type CODE as sexp/;
  26
  27 sub roundtrip_test {
  28         my ($sexp) = @_;
  29         my $ds = Data::SExpression->new({use_symbol_class => 1, fold_lists => 0});
  30         my $parsed = $ds->read($sexp);
  31         is dump_sexp($parsed), $sexp, "roundtrip: $sexp";
  32 }
  33
  34 roundtrip_test 'symbol';
  35 roundtrip_test '(HA-HA 111 "text")';
  36 roundtrip_test '(cons . cell)';
  37 roundtrip_test '(1 2 3 . 4)';