### Question:
HeaderExtractor implements EnumeratedValuesExtractor { @Override public String getValue(String key) { return request.getProperty(key); } HeaderExtractor(PortletRequest request,
            PortletResponse response); @Override Enumeration<String> getKeys(); @Override String getValue(String key); @Override Enumeration<String> getValues(String key); @Override void setValue(String key, String value);  }### Answer:
@Test public void testGetValue() { expect(request.getProperty("name")).andReturn("value"); replay(request, response); assertEquals("value", extractor.getValue("name")); verify(request, response); }