is( ref($r->{filter}), 'CODE', 'filter new(n)' );
$r->filter( undef );
ok( !defined $r->{filter}, 'filter(0)' );
}
*/
is($rt->_node_key(['a' => 1, 'b' => 2, 'c' => 3]), 'a', '_node_key(1)');
is($rt->_node_key(['b' => 3, 'c' => 2, 'z' => 1]), 'b', '_node_key(2)');
is($rt->_node_key(['a' => 1, 'a.' => 2, 'b' => 3]), 'a', '_node_key(3)');
is($rt->_node_key(['' => 0, 'a' => 1, 'a.' => 2, 'b' => 3]), 'a', '_node_key(4)');
is($rt->_node_key(['' => 0, 'abc' => 1, 'def' => 2, 'g' => 3]), 'abc', '_node_key(5)');
is($rt->_node_offset(['a', 'b', '\\d+', 'e', '\\d']), -1, '_node_offset(1)');
is($rt->_node_offset([['x' => ['x'], '' => 0], 'a', 'b', '\\d+', 'e', '\\d']), 0, '_node_offset(2)');
is($rt->_node_offset(['a', 'b', '\\d+', 'e', ['a' => 1, 'b' => 2], 'x', 'y', 'z']), 4, '_node_offset(3)');
is($rt->_node_offset([['z' => 1, 'x' => 2], 'b', '\\d+', 'e', ['a' => 1, 'b' => 2], 'z']), 0, '_node_offset(4)');
is($rt->_node_offset([[1, 2, 3, ['a' => ['a'], 'b' => ['b']]], 'a', ['z' => 1, 'x' => 2]]), 2, '_node_offset(5)');
is($rt->_node_eq([], []), 1, '{} eq {}');
is($rt->_node_eq(NULL, []), 0, 'undef ne {}');
is($rt->_node_eq([], NULL), 0, '{} ne undef');
is($rt->_node_eq(NULL, NULL), 0, 'undef ne undef');
is($rt->_node_eq([], []), 1, '[] eq []');
//is( $rt->_node_eq( [], []), 0, '[] ne {}'); //PHPなので同一扱い
//is( $rt->_node_eq( [], []), 0, '{} ne []'); //
is($rt->_node_eq([0], [0]), 1, 'eq [0]');
is($rt->_node_eq([0, 1, 2], [0, 1, 2]), 1, 'eq [0,1,2]');
is($rt->_node_eq([0, 1, 2], [0, 1, 3]), 0, 'ne [0,1,2]');
is($rt->_node_eq([1, 2], [0, 1, 2]), 0, 'ne [1,2]');
is($rt->_node_eq(['a' => ['a', 'b']], ['a' => ['a', 'b']]), 1, 'eq {a}');
is($rt->_node_eq(['a' => ['a', 'b']], ['a' => ['a', 'b'], '' => 0]), 0, 'ne {a}');
is($rt->_node_eq(['a' => ['a', 'b'], 'b' => ['b', 'c']], ['a' => ['a', 'b'], 'b' => ['b', 'c']]), 1, 'eq {a,b}');
is($rt->_node_eq(['a' => ['a', 'b'], 'b' => ['b', 'c']], ['a' => ['a', 'b'], 'b' => ['b', 'd']]), 0, 'ne {a,b}');
is($rt->_node_eq([['a' => ['a', 'b'], 'b' => ['b', 'c']], ['z' => ['z', 'y'], 'm' => ['m', 'n']]], [['a' => ['a', 'b'], 'b' => ['b', 'c']], ['z' => ['z', 'y'], 'm' => ['m', 'n']]]), 1, 'eq {a,b},{z,m}');
