Really work around RT#108390 (630e2ea8a)

[dbsrgits/DBIx-Class.git] / t / lib / DBICTest / Util.pm

diff --git a/t/lib/DBICTest/Util.pm b/t/lib/DBICTest/Util.pm
index c8893c8..b084560 100644 (file)
--- a/t/lib/DBICTest/Util.pm
+++ b/t/lib/DBICTest/Util.pm
@@ -5,23 +5,39 @@ use strict;
 
 use ANFANG;
 
-use constant DEBUG_TEST_CONCURRENCY_LOCKS =>
-  ( ($ENV{DBICTEST_DEBUG_CONCURRENCY_LOCKS}||'') =~ /^(\d+)$/ )[0]
-    ||
-  0
-;
+use DBICTest::RunMode;
+
+use constant {
+
+  DEBUG_TEST_CONCURRENCY_LOCKS => (
+    ( ($ENV{DBICTEST_DEBUG_CONCURRENCY_LOCKS}||'') =~ /^(\d+)$/ )[0]
+      ||
+    0
+  ),
+
+  # During 5.13 dev cycle HELEMs started to leak on copy
+  # add an escape for these perls ON SMOKERS - a user/CI will still get death
+  # constname a homage to http://theoatmeal.com/comics/working_home
+  PEEPEENESS => (
+    DBICTest::RunMode->is_smoker
+      and
+    ! DBICTest::RunMode->is_ci
+      and
+    ( "$]" >= 5.013005 and "$]" <= 5.013006)
+  ),
+};
 
 use Config;
 use Carp qw(cluck confess croak);
 use Fcntl qw( :DEFAULT :flock );
-use Scalar::Util qw(blessed refaddr);
+use Scalar::Util qw( blessed refaddr openhandle );
 use DBIx::Class::_Util qw( scope_guard parent_dir mkdir_p );
 
 use base 'Exporter';
 our @EXPORT_OK = qw(
   dbg stacktrace
-  local_umask tmpdir find_co_root
-  visit_namespaces
+  local_umask slurp_bytes tmpdir find_co_root rm_rf
+  visit_namespaces PEEPEENESS
   check_customcond_args
   await_flock DEBUG_TEST_CONCURRENCY_LOCKS
 );
@@ -72,7 +88,21 @@ sub await_flock ($$) {
 
     # "say something" every 10 cycles to work around RT#108390
     # jesus christ our tooling is such a crock of shit :(
-    print "#\n" if not $tries % 10;
+    unless ( $tries % 10 ) {
+
+      # Turning on autoflush is crucial: if stars align just right buffering
+      # will ensure we never actually call write() underneath until the grand
+      # timeout is reached (and that's too long). Reproducible via
+      #
+      # DBICTEST_VERSION_WARNS_INDISCRIMINATELY=1 \
+      # DBICTEST_RUN_ALL_TESTS=1 \
+      # strace -f \
+      # prove -lj10 xt/extra/internals/
+      #
+      select( ( select(\*STDOUT), $|=1 )[0] );
+
+      print "#\n";
+    }
   }
 
   return $res;
@@ -86,7 +116,7 @@ sub local_umask ($) {
     if ! defined wantarray;
 
   my $old_umask = umask($_[0]);
-  die "Setting umask failed: $!" unless defined $old_umask;
+  croak "Setting umask failed: $!" unless defined $old_umask;
 
   scope_guard(sub {
     local ($@, $!, $?);
@@ -230,6 +260,86 @@ EOE
 }
 
 
+sub slurp_bytes ($) {
+  croak "Expecting a file name, not a filehandle" if openhandle $_[0];
+  croak "'$_[0]' is not a readable filename" unless -f $_[0] && -r $_[0];
+  open my $fh, '<:raw', $_[0] or croak "Unable to open '$_[0]': $!";
+  local $/ unless wantarray;
+  <$fh>;
+}
+
+
+sub rm_rf ($) {
+  croak "No valid argument supplied to rm_rf()" unless length "$_[0]";
+
+  return unless -e $_[0];
+
+### I do not trust myself - check for subsuming ( the right way )
+### Avoid things like https://rt.cpan.org/Ticket/Display.html?id=111637
+  require Cwd;
+
+  my ($target, $tmp, $co_tmp) = map {
+
+    my $abs_fn = Cwd::abs_path("$_");
+
+    if ( $^O eq 'MSWin32' and length $abs_fn ) {
+
+      # sometimes we can get a short/longname mix, normalize everything to longnames
+      $abs_fn = Win32::GetLongPathName($abs_fn);
+
+      # Fixup for unixy (as opposed to native) slashes
+      $abs_fn =~ s|\\|/|g;
+    }
+
+    $abs_fn =~ s| (?<! / ) $ |/|x
+      if -d $abs_fn;
+
+    ( $abs_fn =~ /(.+)/s )[0]
+
+  } ( $_[0], tmpdir, find_co_root . 't/var' );
+
+  croak(
+    "Path supplied to rm_rf() '$target' is neither within the local nor the "
+  . "global scratch dirs ( '$co_tmp' and '$tmp' ): REFUSING TO `rm -rf` "
+  . 'at random'
+  ) unless (
+    ( index($target, $co_tmp) == 0 and $target ne $co_tmp )
+      or
+    ( index($target, $tmp) == 0    and $target ne $tmp )
+  );
+###
+
+  require File::Path;
+
+  # do not ask for a recent version, use 1.x API calls
+  File::Path::rmtree([ $target ]);
+}
+
+
+# This is an absolutely horrible thing to do on an end-user system
+# DO NOT use it indiscriminately - ideally under nothing short of ->is_smoker
+# Not added to EXPORT_OK on purpose
+sub can_alloc_MB ($) {
+  my $arg = shift;
+  $arg = 'UNDEF' if not defined $arg;
+
+  croak "Expecting a positive integer, got '$arg'"
+    if $arg !~ /^[1-9][0-9]*$/;
+
+  my ($perl) = $^X =~ /(.+)/;
+  local $ENV{PATH};
+  local $ENV{PERL5LIB} = join ($Config{path_sep}, @INC);
+
+  local ( $!, $^E, $?, $@ );
+
+  system( $perl, qw( -Mt::lib::ANFANG -e ), <<'EOS', $arg );
+$0 = 'malloc_canary';
+my $tail_character_of_reified_megastring = substr( ( join '', map chr, 0..255 ) x (4 * 1024 * $ARGV[0]), -1 );
+EOS
+
+  !!( $? == 0 )
+}
+
 sub stacktrace {
   my $frame = shift;
   $frame++;