Re: PATCH for study/foo/

[p5sagit/p5-mst-13.2.git] / t / op / gv.t

#!./perl

#
# various typeglob tests
#

print "1..16\n";

# type coersion on assignment
$foo = 'foo';
$bar = *main::foo;
$bar = $foo;
print ref(\$bar) eq 'SCALAR' ? "ok 1\n" : "not ok 1\n";
$foo = *main::bar;

# type coersion (not) on misc ops

if ($foo) {
  print ref(\$foo) eq 'GLOB' ? "ok 2\n" : "not ok 2\n";
}

unless ($foo =~ /abcd/) {
  print ref(\$foo) eq 'GLOB' ? "ok 3\n" : "not ok 3\n";
}

if ($foo eq '*main::bar') {
  print ref(\$foo) eq 'GLOB' ? "ok 4\n" : "not ok 4\n";
}

# type coersion on substitutions that match
$a = *main::foo;
$b = $a;
$a =~ s/^X//;
print ref(\$a) eq 'GLOB' ? "ok 5\n" : "not ok 5\n";
$a =~ s/^\*//;
print $a eq 'main::foo' ? "ok 6\n" : "not ok 6\n";
print ref(\$b) eq 'GLOB' ? "ok 7\n" : "not ok 7\n";

# typeglobs as lvalues
substr($foo, 0, 1) = "XXX";
print ref(\$foo) eq 'SCALAR' ? "ok 8\n" : "not ok 8\n";
print $foo eq 'XXXmain::bar' ? "ok 9\n" : "not ok 9\n";

# returning glob values
sub foo {
  local($bar) = *main::foo;
  $foo = *main::bar;
  return ($foo, $bar);
}

($fuu, $baa) = foo();
if (defined $fuu) {
  print ref(\$fuu) eq 'GLOB' ? "ok 10\n" : "not ok 10\n";
}

if (defined $baa) {
  print ref(\$baa) eq 'GLOB' ? "ok 11\n" : "not ok 11\n";
}

# nested package globs
# NOTE:  It's probably OK if these semantics change, because the
#        fact that %X::Y:: is stored in %X:: isn't documented.
#        (I hope.)

{ package Foo::Bar }
print exists $Foo::{'Bar::'} ? "ok 12\n" : "not ok 12\n";
print $Foo::{'Bar::'} eq '*Foo::Bar::' ? "ok 13\n" : "not ok 13\n";

# test undef operator clearing out entire glob
$foo = 'stuff';
@foo = qw(more stuff);
%foo = qw(even more random stuff);
undef *foo;
print +($foo || @foo || %foo) ? "not ok" : "ok", " 14\n";

# test warnings from assignment of undef to glob
{
    my $msg;
    local $SIG{__WARN__} = sub { $msg = $_[0] };
    local $^W = 1;
    *foo = 'bar';
    print $msg ? "not ok" : "ok", " 15\n";
    *foo = undef;
    print $msg ? "ok" : "not ok", " 16\n";
}