@Test
    public void testMissingTokendAuthenticator() {
        val client = new IpClient(null);
        TestsHelper.expectException(() -> client.getCredentials(new CallContext(MockWebContext.create(), new MockSessionStore())),
            TechnicalException.class, "authenticator cannot be null");
    }
This class tests the {@link IpClient} class.

@author Jerome Leleu
@since 1.8.0
pac4j-http/src/test/java/org/pac4j/http/client/direct/IpClientTests.java