Revert C3-fication d009cb7d and fixups 7f068248 and 983f766d

[dbsrgits/DBIx-Class.git] / xt / extra / c3_mro.t

BEGIN { do "./t/lib/ANFANG.pm" or die ( $@ || $! ) }

use warnings;
use strict;

use Test::More;
use DBICTest;
use DBIx::Class::Optional::Dependencies;
use DBIx::Class::_Util 'uniq';

my @global_ISA_tail = qw(
  DBIx::Class
  DBIx::Class::Componentised
  Class::C3::Componentised
  DBIx::Class::AccessorGroup
  DBIx::Class::MethodAttributes
  Class::Accessor::Grouped
);

{
  package AAA;

  use base "DBIx::Class::Core";
  use mro 'c3';
}

{
  package BBB;

  use base 'AAA';

  #Injecting a direct parent.
  __PACKAGE__->inject_base( __PACKAGE__, 'AAA' );
}

{
  package CCC;

  use base 'AAA';

  #Injecting an indirect parent.
  __PACKAGE__->inject_base( __PACKAGE__, 'DBIx::Class::Core' );
}

eval { mro::get_linear_isa('BBB'); };
ok (! $@, "Correctly skipped injecting a direct parent of class BBB");

eval { mro::get_linear_isa('CCC'); };
ok (! $@, "Correctly skipped injecting an indirect parent of class BBB");


my $art = DBICTest->init_schema->resultset("Artist")->next;

check_ancestry($_) for uniq map
  { length ref $_ ? ref $_ : $_ }
  (
    $art,
    $art->result_source,
    $art->result_source->resultset,
    ( map
      { $_, $_->result_class, $_->resultset_class }
      map
        { $art->result_source->schema->source($_) }
        $art->result_source->schema->sources
    ),
    qw( AAA BBB CCC ),
    ((! DBIx::Class::Optional::Dependencies->req_ok_for('cdbicompat') ) ? () : do {
      unshift @INC, 't/cdbi/testlib';
      map { eval "require $_" or die $@; $_ } qw(
        Film Lazy Actor ActorAlias ImplicitInflate
      );
    }),
  )
;

use DBIx::Class::Storage::DBI::Sybase::Microsoft_SQL_Server;

is_deeply (
  mro::get_linear_isa('DBIx::Class::Storage::DBI::Sybase::Microsoft_SQL_Server'),
  [qw/
    DBIx::Class::Storage::DBI::Sybase::Microsoft_SQL_Server
    DBIx::Class::Storage::DBI::Sybase
    DBIx::Class::Storage::DBI::MSSQL
    DBIx::Class::Storage::DBI::UniqueIdentifier
    DBIx::Class::Storage::DBI::IdentityInsert
    DBIx::Class::Storage::DBI
    DBIx::Class::Storage::DBIHacks
    DBIx::Class::Storage
  /, @global_ISA_tail],
  'Correctly ordered ISA of DBIx::Class::Storage::DBI::Sybase::Microsoft_SQL_Server'
);

my $storage = DBIx::Class::Storage::DBI::Sybase::Microsoft_SQL_Server->new;
$storage->connect_info(['dbi:SQLite::memory:']); # determine_driver's init() connects for this subclass
$storage->_determine_driver;
is (
  $storage->can('sql_limit_dialect'),
  'DBIx::Class::Storage::DBI::MSSQL'->can('sql_limit_dialect'),
  'Correct method picked'
);

if ( "$]" >= 5.010 ) {
  ok (! $INC{'Class/C3.pm'}, 'No Class::C3 loaded on perl 5.10+');

  # Class::C3::Componentised loads MRO::Compat unconditionally to satisfy
  # the assumption that once Class::C3::X is loaded, so is Class::C3
  #ok (! $INC{'MRO/Compat.pm'}, 'No MRO::Compat loaded on perl 5.10+');
}

sub check_ancestry {
  my $class = shift;

  die "Expecting classname" if length ref $class;

  my @linear_ISA = @{ mro::get_linear_isa($class) };

  # something is *VERY* wrong, the splice below won't make it
  unless (@linear_ISA > @global_ISA_tail) {
    fail(
      "Unexpectedly shallow \@ISA for class '$class': "
    . join ', ', map { "'$_'" } @linear_ISA
    );
    return;
  }

  is_deeply (
    [ splice @linear_ISA, ($#linear_ISA - $#global_ISA_tail) ],
    \@global_ISA_tail,
    "Correct end of \@ISA for '$class'"
  );

  is(
    mro::get_mro($class),
    'c3',
    "Expected mro on class '$class' automatically set",
  );
}

done_testing;