@Test
    public void testNullClientFinder() {
        logic.setClientFinder(null);
        TestsHelper.expectException(this::call, TechnicalException.class, "clientFinder cannot be null");
    }
Tests {@link DefaultSecurityLogic}.

@author Jerome Leleu
@since 1.9.0
pac4j-core/src/test/java/org/pac4j/core/engine/DefaultSecurityLogicTests.java