Make sure tests still pass in a fork-limited environment

[dbsrgits/DBIx-Class.git] / t / 51threadnodb.t

diff --git a/t/51threadnodb.t b/t/51threadnodb.t
index 52cdcd8..dd1a501 100644 (file)
--- a/t/51threadnodb.t
+++ b/t/51threadnodb.t
@@ -4,18 +4,27 @@ BEGIN {
     print "1..0 # SKIP your perl does not support ithreads\n";
     exit 0;
   }
+
+  if ($INC{'Devel/Cover.pm'}) {
+    print "1..0 # SKIP Devel::Cover does not work with threads yet\n";
+    exit 0;
+  }
 }
 use threads;
 
 use strict;
 use warnings;
 use Test::More;
+use DBIx::Class::_Util 'sigwarn_silencer';
+
+use lib qw(t/lib);
+use DBICTest;
 
 plan skip_all => 'DBIC does not actively support threads before perl 5.8.5'
   if $] < '5.008005';
 
-use lib qw(t/lib);
-use DBICTest;
+plan skip_all => 'Potential problems on Win32 Perl < 5.14 and Variable::Magic - investigation pending'
+  if $^O eq 'MSWin32' && $] < 5.014 && DBICTest::RunMode->is_plain;
 
 # README: If you set the env var to a number greater than 10,
 #   we will use that many children
@@ -28,14 +37,27 @@ my $schema = DBICTest->init_schema(no_deploy => 1);
 isa_ok ($schema, 'DBICTest::Schema');
 
 my @threads;
-push @threads, threads->create(sub {
-  my $rsrc = $schema->source('Artist');
-  undef $schema;
-  isa_ok ($rsrc->schema, 'DBICTest::Schema');
-  my $s2 = $rsrc->schema->clone;
-
-  sleep 1;  # without this many tasty crashes
-}) for (1.. $num_children);
+SKIP: {
+
+  local $SIG{__WARN__} = sigwarn_silencer( qr/Thread creation failed/i );
+
+  for (1.. $num_children) {
+    push @threads, threads->create(sub {
+      my $rsrc = $schema->source('Artist');
+      undef $schema;
+      isa_ok ($rsrc->schema, 'DBICTest::Schema');
+      my $s2 = $rsrc->schema->clone;
+
+      sleep 1;  # without this many tasty crashes
+    }) || do {
+      skip "EAGAIN encountered, your system is likely bogged down: skipping rest of test", 1
+        if $! == Errno::EAGAIN();
+
+      die "Unable to start thread: $!";
+    };
+  }
+}
+
 ok(1, "past spawning");
 
 $_->join for @threads;