@Test
    public void testBlankClientName() {
        val currentClients = finder.find(new Clients(), MockWebContext.create(), "  ");
        assertEquals(0, currentClients.size());
    }
Tests {@link DefaultSecurityClientFinder}.

@author Jerome Leleu
@since 1.8.0
pac4j-core/src/test/java/org/pac4j/core/client/finder/DefaultSecurityClientFinderTests.java