Implement uplevel()

[perl/modules/Scope-Upper.git] / t / 69-uplevel-threads.t

diff --git a/t/69-uplevel-threads.t b/t/69-uplevel-threads.t
new file mode 100644 (file)
index 0000000..6ea386a
--- /dev/null
+++ b/t/69-uplevel-threads.t
@@ -0,0 +1,98 @@
+#!perl -T
+
+use strict;
+use warnings;
+
+sub skipall {
+ my ($msg) = @_;
+ require Test::More;
+ Test::More::plan(skip_all => $msg);
+}
+
+use Config qw<%Config>;
+
+BEGIN {
+ my $force = $ENV{PERL_SCOPE_UPPER_TEST_THREADS} ? 1 : !1;
+ my $t_v   = $force ? '0' : '1.67';
+ skipall 'This perl wasn\'t built to support threads'
+                                                    unless $Config{useithreads};
+ skipall 'perl 5.13.4 required to test thread safety'
+                                              unless $force or "$]" >= 5.013004;
+ skipall "threads $t_v required to test thread safety"
+                                              unless eval "use threads $t_v; 1";
+}
+
+use Test::More;
+
+use Scope::Upper qw<uplevel UP SU_THREADSAFE>;
+
+my $num;
+
+BEGIN {
+ skipall 'This Scope::Upper isn\'t thread safe' unless SU_THREADSAFE;
+ plan tests => 3 + ($num = 30) * 3;
+ defined and diag "Using threads $_" for $threads::VERSION;
+ if (eval "use Time::HiRes; 1") {
+  defined and diag "Using Time::HiRes $_" for $Time::HiRes::VERSION;
+  *usleep = \&Time::HiRes::usleep;
+ } else {
+  diag 'Using fallback usleep';
+  *usleep = sub {
+   my $s = int($_[0] / 2.5e5);
+   sleep $s if $s;
+  };
+ }
+}
+
+sub depth {
+ my $depth = 0;
+ while (1) {
+  my @c = caller($depth);
+  last unless @c;
+  ++$depth;
+ }
+ return $depth - 1;
+}
+
+is depth(),                           0, 'check top depth';
+is sub { depth() }->(),               1, 'check subroutine call depth';
+is do { local $@; eval { depth() } }, 1, 'check eval block depth';
+
+our $z;
+
+sub cb {
+ my $d   = splice @_, 1, 1;
+ my $p   = shift;
+ my $tid = pop;
+ is depth(), $d - 1, "$p: correct depth inside";
+ $tid, @_, $tid + 2
+}
+
+sub up1 {
+ my $tid  = threads->tid();
+ local $z = $tid;
+ my $p    = "[$tid] up1";
+
+ usleep rand(1e6);
+
+ my @res = (
+  -2,
+  sub {
+   my @dummy = (
+    -1,
+    sub {
+     my $d = depth();
+     my @ret = &uplevel(\&cb => ($p, $d, $tid + 1, $tid) => UP);
+     is depth(), $d, "$p: correct depth after uplevel";
+     @ret;
+    }->(),
+    1
+   );
+  }->(),
+  2
+ );
+
+ is_deeply \@res, [ -2, -1, $tid .. $tid + 2, 1, 2 ], "$p: returns correctly";
+}
+
+$_->join for map threads->create(\&up1), 1 .. $num;