public function testGroupPermissionsAreCalculatedCorrectly()
{
$file = new File('file');
$file->chgrp($this->gid);
$ph = new PermissionHelper();
$ph->setNode($file);
$file->chmod(00);
$this->assertFalse($ph->groupCanRead(), 'group can\'t read with 0000');
$this->assertFalse($ph->groupCanWrite(), 'group can\'t write with 0000');
$file->chmod(010);
$this->assertFalse($ph->groupCanRead(), 'group can\'t read with 0010');
$this->assertFalse($ph->groupCanWrite(), 'group can\'t write with 0010');
$file->chmod(020);
$this->assertFalse($ph->groupCanRead(), 'group can\'t read with 0020');
$this->assertTrue($ph->groupCanWrite(), 'group can write with 0020');
$file->chmod(040);
$this->assertTrue($ph->groupCanRead(), 'group can read with 0040');
$this->assertFalse($ph->groupCanWrite(), 'group can\'t write with 0040');
$file->chmod(050);
$this->assertTrue($ph->groupCanRead(), 'group can read with 0050');
$this->assertFalse($ph->groupCanWrite(), 'group can\'t write with 0050');
$file->chmod(060);
$this->assertTrue($ph->groupCanRead(), 'group can read with 0060');
$this->assertTrue($ph->groupCanWrite(), 'group can read with 0060');
$file->chgrp(0);
$file->chmod(0666);
$this->assertFalse($ph->groupCanRead(), 'group can\'t read without ownership');
$this->assertFalse($ph->groupCanWrite(), 'group can\'t without ownership');
}
