@Test
  public void testSetOnCreate() {
    assertSetAndGetSucceedsOnCreate("permissions", PosixFilePermissions.fromString("rwxrwxrwx"));
    assertSetFailsOnCreate("group", createGroupPrincipal("foo"));
  }
Tests for {@link PosixAttributeProvider}.

@author Colin Decker
jimfs/src/test/java/com/google/common/jimfs/PosixAttributeProviderTest.java