@Test
    public void testBadTimeUnit() {
        val store = new GuavaStore();
        store.setSize(15);
        store.setTimeout(20);
        TestsHelper.expectException(store::init, TechnicalException.class, "timeUnit cannot be null");
    }
Test {@link GuavaStore}.

@author Jerome Leleu
@since 2.0.0
pac4j-core/src/test/java/org/pac4j/core/store/GuavaStoreTests.java