expected.put("file", 0644);
        expected.put("folder", 0755);

        assertVisitsPermissions(tree, expected);
    }

    @Test
    public void readsTarFileWithNullPermissions() {
        resources.findResource("nullpermissions.tar").copyTo(archiveFile);

        final Map<String, Integer> expected = new HashMap<>();
        expected.put("bin", 0755);