### Question:
DefaultValueStandardizer implements StandardizationPolicy, AcceptsEmptyValues { public Boolean accepts (Object value) { return (value == null || value instanceof String); } DefaultValueStandardizer(@PolicyPropertyRef(name = "Default Value") String defaultStr); @Override String convertValue(String value); String getDefaultStr(); Boolean accepts(Object value); Object convertRawValue(Object value);  }### Answer:
@Test public void testAcceptValidType1() { DefaultValueStandardizer standardizer = new DefaultValueStandardizer("default"); assertTrue(standardizer.accepts("string-value")); }
@Test public void testAcceptValidType2() { DefaultValueStandardizer standardizer = new DefaultValueStandardizer("default"); assertTrue(standardizer.accepts(null)); }
@Test public void testAcceptInvalidType() { DefaultValueStandardizer standardizer = new DefaultValueStandardizer("default"); Double doubleValue = 100.01d; assertFalse(standardizer.accepts(doubleValue)); }