opendir doesn't know about mocked directories in a directory.

[toddr]

my @m;
push @m, Test::MockFile->dir('/a/long/path');
push @m, Test::MockFile->dir('/a/long/path/here');
mkdir '/a/long/path';
mkdir '/a/long/path/here';
opendir(my $fh, '/a/long/path');
my @files = readdir $fh;
is(\@files, [qw/. .. here/], "opendir for only dirs dir is right");

not ok 31 - opendir for only dirs dir is right

# Failed test 'opendir for only dirs dir is right'
# at t/opendir.t line 80.
# +------+------------------+-------+
# | PATH | GOT              | CHECK |
# +------+------------------+-------+
# | [2]  | <DOES NOT EXIST> | here  |
# +------+------------------+-------+

[atoomic]

moved this comment to an isolated case #108