@Before
public void setUp() {
initMocks(this);
when(credentials.getRequest()).thenReturn(request);
provider = new HttpHeaderPrincipalProvider();
}
@Test
public void testNoRequest() {
provider.setHeaderName("Groups");
provider.setSeparator(",");
when(credentials.getRequest()).thenReturn(null);
final Set<Principal> principals = provider.getPrincipals(credentials);
assertTrue("Empty set expected when no request supplied", principals.isEmpty());
}