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# byte repetoire to EBCDIC sets and back.

my $enc_as = 'iso8859-1';
foreach my $enc_eb (@ebcdic_sets)
 {
  foreach my $ord (0..255)
   {
    $str = chr($ord);
    my $rc = from_to($str,$enc_as,$enc_eb);
    $rc += from_to($str,$enc_eb,$enc_as);
    is $rc,2,"return code for $ord $enc_eb -> $enc_as -> $enc_eb was not obtained";
    is $ord,ord($str),"$enc_as mangled translating $ord to $enc_eb and back";
   }
 }

my $mime = find_encoding('iso-8859-2');
is defined($mime),1,"Cannot find MIME-ish'iso-8859-2'";
my $x11 = find_encoding('iso8859-2');
is defined($x11),1,"Cannot find X11-ish 'iso8859-2'";
is $mime,$x11,"iso8598-2 and iso-8859-2 not same";
my $spc = find_encoding('iso 8859-2');
is defined($spc),1,"Cannot find 'iso 8859-2'";
is $spc,$mime,"iso 8859-2 and iso-8859-2 not same";

for my $i (256,128,129,256)
 {
  my $c = chr($i);
  my $s = "$c\n".sprintf("%02X",$i);
  is utf8::valid($s),1,"concat of $i botched";
  utf8::upgrade($s);
  is utf8::valid($s),1,"concat of $i botched";
 }

# Spot check a few points in/out of utf8
for my $i (ord('A'),128,256,0x20AC)
 {
  my $c = chr($i);
  my $o = encode_utf8($c);
  is decode_utf8($o),$c,"decode_utf8 not inverse of encode_utf8 for $i";
  is encode('utf8',$c),$o,"utf8 encode by name broken for $i";
  is decode('utf8',$o),$c,"utf8 decode by name broken for $i";
 }


# is_utf8

ok(  is_utf8("\x{100}"));
ok(! is_utf8("a"));
ok(! is_utf8(""));
"\x{100}" =~ /(.)/;
ok(  is_utf8($1)); # ID 20011127.151
$a = $1;
ok(  is_utf8($a));
$a = "\x{100}";
chop $a;
ok(  is_utf8($a)); # weird but true: an empty UTF-8 string

# non-string arguments
package Encode::Dummy;
use overload q("") => sub { $_[0]->[0] };
sub new { my $class = shift; bless [ @_  ] => $class }
package main;
ok(decode(latin1 => Encode::Dummy->new("foobar")), "foobar");
ok(encode(utf8   => Encode::Dummy->new("foobar")), "foobar");

# RT#91569
# decode_utf8 with non-string arguments
ok(decode_utf8(*1), "*main::1");

# hash keys
foreach my $name ("UTF-16LE", "UTF-8", "Latin1") {
  my $key = (keys %{{ "whatever\x{CA}" => '' }})[0];
  my $kopy = $key;
  encode($name, $kopy, Encode::FB_CROAK);
  is $key, "whatever\x{CA}", "encode $name with shared hash key scalars";
  undef $key;
  $key = (keys %{{ "whatever\x{CA}" => '' }})[0];
  $kopy = $key;
  encode($name, $kopy, Encode::FB_CROAK | Encode::LEAVE_SRC);
  is $key, "whatever\x{CA}", "encode $name with LEAVE_SRC and shared hash key scalars";
  undef $key;
  $key = (keys %{{ "whatever" => '' }})[0];
  $kopy = $key;
  decode($name, $kopy, Encode::FB_CROAK);
  is $key, "whatever", "decode $name with shared hash key scalars";
  undef $key;
  $key = (keys %{{ "whatever" => '' }})[0];
  $kopy = $key;
  decode($name, $kopy, Encode::FB_CROAK | Encode::LEAVE_SRC);
  is $key, "whatever", "decode $name with LEAVE_SRC and shared hash key scalars";

  my $enc = find_encoding($name);
  undef $key;
  $key = (keys %{{ "whatever\x{CA}" => '' }})[0];
  $kopy = $key;
  $enc->encode($kopy, Encode::FB_CROAK);
  is $key, "whatever\x{CA}", "encode obj $name with shared hash key scalars";
  undef $key;
  $key = (keys %{{ "whatever\x{CA}" => '' }})[0];
  $kopy = $key;
  $enc->encode($kopy, Encode::FB_CROAK | Encode::LEAVE_SRC);
  is $key, "whatever\x{CA}", "encode obj $name with LEAVE_SRC and shared hash key scalars";
  undef $key;
  $key = (keys %{{ "whatever" => '' }})[0];
  $kopy = $key;
  $enc->decode($kopy, Encode::FB_CROAK);
  is $key, "whatever", "decode obj $name with shared hash key scalars";
  undef $key;
  $key = (keys %{{ "whatever" => '' }})[0];
  $kopy = $key;
  $enc->decode($kopy, Encode::FB_CROAK | Encode::LEAVE_SRC);
  is $key, "whatever", "decode obj $name with LEAVE_SRC and shared hash key scalars";
}

my $latin1 = find_encoding('latin1');
my $orig = "\316";
$orig =~ /(.)/;
is $latin1->encode($1), $orig, '[cpan #115168] passing magic regex globals to encode';
SKIP: {
    skip "Perl Version ($]) is older than v5.16", 1 if $] < 5.016;
    *a = $orig;