@Test
  public void testGetAttributeRequest1() {
    doFilter();

    getFilteredRequest().setAttribute("foo", "bar");

    assertEquals("bar", getFilteredRequest().getAttribute("foo"));
    assertNull("Unknown attribute should be null", getFilteredRequest().getAttribute("baz"));
  }
This servlet tests the effects of the downstream SessionCachingFilter filter. When these tests
are performed, the filter would already have taken effect.
extensions/geode-modules-session/src/integrationTest/java/org/apache/geode/modules/session/internal/filter/CommonTests.java