Make sure tests still pass in a fork-limited environment

[dbsrgits/DBIx-Class.git] / t / storage / txn.t

diff --git a/t/storage/txn.t b/t/storage/txn.t
index 41df4d5..3ce4162 100644 (file)
--- a/t/storage/txn.t
+++ b/t/storage/txn.t
@@ -1,10 +1,6 @@
 use strict;
 use warnings;
 
-BEGIN {
-  require threads if $^O eq 'MSWin32'; # preload due to fork errors
-}
-
 use Test::More;
 use Test::Warn;
 use Test::Exception;
@@ -30,9 +26,10 @@ my $code = sub {
     (ref $schema)->txn_do(sub{});
   }, qr/storage/, "can't call txn_do without storage");
 
-  throws_ok ( sub {
+  throws_ok {
     $schema->txn_do('');
-  }, qr/must be a CODE reference/, '$coderef parameter check ok');
+  } qr/\Qrun() requires a coderef to execute as its first argument/,
+  '$coderef parameter check ok';
 }
 
 # Test successful txn_do() - scalar/list context
@@ -110,6 +107,7 @@ for my $want (0,1) {
   is ($schema->storage->transaction_depth, 0, 'Start outside txn');
 
   my @pids;
+  SKIP:
   for my $action (
     sub {
       my $s = shift;
@@ -132,8 +130,13 @@ for my $want (0,1) {
     },
   ) {
     my $pid = fork();
-    die "Unable to fork: $!\n"
-      if ! defined $pid;
+
+    if( ! defined $pid ) {
+      skip "EAGAIN encountered, your system is likely bogged down: skipping forking test", 1
+        if $! == Errno::EAGAIN();
+
+      die "Unable to fork: $!"
+    }
 
     if ($pid) {
       push @pids, $pid;
@@ -209,8 +212,13 @@ sub _test_forking_action {
       if $^O eq 'MSWin32';
 
     my $pid = fork();
-    die "Unable to fork: $!\n"
-      if ! defined $pid;
+    if( ! defined $pid ) {
+
+      skip "EAGAIN encountered, your system is likely bogged down: skipping forking test", 1
+        if $! == Errno::EAGAIN();
+
+      die "Unable to fork: $!"
+    }
 
     if ($pid) {
       push @pids, $pid;
@@ -410,4 +418,41 @@ warnings_are {
 
 } [], 'No warnings on AutoCommit => 0 with txn_do';
 
+
+# make sure we are not fucking up the stacktrace on broken overloads
+{
+  package DBICTest::BrokenOverload;
+
+  use overload '""' => sub { $_[0] };
+}
+
+{
+  my @w;
+  local $SIG{__WARN__} = sub {
+    $_[0] =~ /\QExternal exception class DBICTest::BrokenOverload implements partial (broken) overloading preventing its instances from being used in simple (\E\$x eq \$y\Q) comparisons/
+      ? push @w, @_
+      : warn @_
+  };
+
+  my $s = DBICTest->init_schema(no_deploy => 1);
+  $s->stacktrace(0);
+  my $g = $s->storage->txn_scope_guard;
+  my $broken_exception = bless {}, 'DBICTest::BrokenOverload';
+
+  # FIXME - investigate what confuses the regex engine below
+
+  # do not reformat - line-num part of the test
+  my $ln = __LINE__ + 6;
+  throws_ok {
+    $s->txn_do( sub {
+      $s->txn_do( sub {
+        $s->storage->_dbh->disconnect;
+        die $broken_exception
+      });
+    })
+  } qr/\QTransaction aborted: $broken_exception. Rollback failed: lost connection to storage at @{[__FILE__]} line $ln\E\n/;  # FIXME wtf - ...\E$/m doesn't work here
+
+  is @w, 1, 'One matching warning only';
+}
+
 done_testing;