Importing IPC-MorseSignals-0.06.tar.gz

[perl/modules/IPC-MorseSignals.git] / t / 11-ascii.t

diff --git a/t/11-ascii.t b/t/11-ascii.t
new file mode 100644 (file)
index 0000000..53890cc
--- /dev/null
+++ b/t/11-ascii.t
@@ -0,0 +1,91 @@
+#!perl -T
+
+use Test::More tests => 4 * 3;
+
+use POSIX qw/SIGINT SIGTERM SIGKILL SIGHUP EXIT_FAILURE/;
+
+use IPC::MorseSignals qw/msend mrecv mreset/;
+
+my $lives = 5;
+
+sub spawn {
+ --$lives;
+ die 'forked too many times' if $lives < 0;
+ pipe my $rdr, my $wtr or die "pipe() failed: $!";
+ my $pid = fork;
+ if (!defined $pid) {
+  die "fork() failed: $!";
+ } elsif ($pid == 0) {
+  close $rdr or die "close() failed: $!";
+  my $block = 0;
+  my $s = mrecv local %SIG, cb => sub {
+   if ($block) {
+    $block = 0;
+   } else {
+    select $wtr; $| = 1;
+    print $wtr $_[1], "\n";
+    select $wtr; $| = 1;
+   }
+  };
+  $SIG{HUP} = sub { mreset $s };
+  $SIG{__WARN__} = sub { $block = 1 };
+  1 while 1;
+  exit EXIT_FAILURE;
+ }
+ close $wtr or die "close() failed: $!";
+ return ($pid, $rdr);
+}
+
+sub slaughter {
+ my ($pid) = @_;
+ kill SIGINT  => $pid;
+ kill SIGTERM => $pid;
+ kill SIGKILL => $pid;
+ waitpid $pid, 0;
+}
+
+my ($pid, $rdr) = spawn;
+
+sub trysend {
+ my ($msg, $desc) = @_;
+ my $speed = 2 ** 16;
+ my $ok = 0;
+ while (!$ok && (($speed /= 2) >= 1)) {
+  my $r = '';
+  eval {
+   local $SIG{ALRM} = sub { die 'timeout' };
+   local $SIG{__WARN__} = sub { die 'do not want warnings' };
+   my $a = (int(100 * (3 * length $msg) / $speed) || 1);
+   $a = 10 if $a > 10;
+   alarm $a;
+   kill SIGHUP => $pid;
+   msend $msg => $pid, speed => $speed, sign => 0;
+   $r = <$rdr>;
+  };
+  kill SIGHUP => $pid if $@;
+  alarm 0;
+  if (!defined $r) { # Something bad happened, respawn
+   close $rdr or die "close() failed: $!";
+   slaughter $pid;
+   ($pid, $rdr) = spawn;
+   $speed *= 2;      # Retry this speed
+  } else {
+   chomp $r;
+   if ($r eq $msg) {
+    $ok = 1;
+   } else {
+    kill SIGHUP => $pid;
+   }
+  }
+ }
+ ok($ok, $desc);
+}
+
+for (1 .. 3) {
+ trysend 'hello', 'ascii';
+ trysend "\0" x 10, 'few bits';
+ trysend "\x{FF}" x 10, 'lots of bits';
+ trysend "a\0b", 'null character';
+}
+
+slaughter $pid;