1 files changed, 79 insertions, 0 deletions
diff --git a/t/01_basic.t b/t/01_basic.t
new file mode 100644
index 0000000..c8d847f
--- /dev/null
+++ b/t/01_basic.t
@@ -0,0 +1,79 @@
+use strict;
+use warnings;
+
+BEGIN {
+  if ($ENV{DEVEL_GLOBALDESTRUCTION_PP_TEST}) {
+    unshift @INC, sub {
+      die 'no XS' if $_[1] eq 'Devel/GlobalDestruction/XS.pm';
+    };
+  }
+}
+
+BEGIN {
+  package Test::Scope::Guard;
+  sub new { my ($class, $code) = @_; bless [$code], $class; }
+  sub DESTROY { my $self = shift; $self->[0]->() }
+}
+
+print "1..9\n";
+
+our $had_error;
+
+# try to ensure this is the last-most END so we capture future tests
+# running in other ENDs
+if ($] >= 5.008) {
+  require B;
+  my $reinject_retries = my $max_retry = 5;
+  my $end_worker;
+  $end_worker = sub {
+    my $tail = (B::end_av()->ARRAY)[-1];
+    if (!defined $tail or $tail == $end_worker) {
+      $? = $had_error || 0;
+      $reinject_retries = 0;
+    }
+    elsif ($reinject_retries--) {
+      push @{B::end_av()->object_2svref}, $end_worker;
+    }
+    else {
+      print STDERR "\n\nSomething is racing with @{[__FILE__]} for final END block definition - can't win after $max_retry iterations :(\n\n";
+      require POSIX;
+      POSIX::_exit( 255 );
+    }
+  };
+  eval 'END { push @{B::end_av()->object_2svref}, $end_worker }';
+}
+# B::end_av isn't available on 5.6, so just use a basic end block
+else {
+  eval 'END { $? = $had_error || 0 }';
+}
+
+sub ok ($$) {
+  $had_error++, print "not " if !$_[0];
+  print "ok";
+  print " - $_[1]" if defined $_[1];
+  print "\n";
+}
+
+END {
+  ok( ! in_global_destruction(), 'Not yet in GD while in END block 2' )
+}
+
+ok( eval "use Devel::GlobalDestruction; 1", "use Devel::GlobalDestruction" );
+
+ok( defined &in_global_destruction, "exported" );
+
+ok( defined prototype \&in_global_destruction, "defined prototype" );
+
+ok( prototype \&in_global_destruction eq "", "empty prototype" );
+
+ok( ! in_global_destruction(), "Runtime is not GD" );
+
+our $sg1;
+$sg1 = Test::Scope::Guard->new(sub { ok( in_global_destruction(), "Final cleanup object destruction properly in GD" ) });
+
+END {
+  ok( ! in_global_destruction(), 'Not yet in GD while in END block 1' )
+}
+
+our $sg2 = Test::Scope::Guard->new(sub { ok( ! in_global_destruction(), "Object destruction in END not considered GD" ) });
+END { undef $sg2 }