I've written a test that inputs keystrokes into the terminal. To do this, I create a fork of my test code. The input from the terminal modifies the object. When my fork returns, however, the object is not modified. How do I return the object from the fork to my original test process?

# CODE:
my $obj = '';
lives_ok { $obj = Commander->new(valid_chars => [ qw ( a b c d ) ] ) }
+ 'Can pass it an array of valid chars';
lives_ok { issue_cmd("abcd\n") } 'Can get a command terminated with ne
+w line';
is ($obj->last_cmd, 'abcd', 'got expected input'); # this fails, retur
+ns empty string

# support methods
sub jam {
  $TIOCSTI = 0x80017472;
  for (split(//, $_[0])) {
    ioctl(STDIN, $TIOCSTI, $_) || die "bad TIOCSTI: $!";
  }
}

sub issue_cmd {
  my $cmd = shift;
  my $pid = fork();
  if (!defined $pid) {
    die "Cannot fork: $!";
  } elsif ($pid == 0) {
    $obj->get_cmd;
    exit 0;
  } else {
    jam($cmd);
    waitpid $pid, 0;
  }
}

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In reply to Modifying an object in a fork by nysus

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