final CompositeData message = queueView.browse()[0];
assertNotNull(message);
TabularDataSupport stringProperties = (TabularDataSupport) message.get(CompositeDataConstants.STRING_PROPERTIES);
assertNotNull(stringProperties);
assertThat(stringProperties.size(), is(greaterThan(0)));
Map.Entry<Object, Object> compositeDataEntry = (Map.Entry<Object, Object>) stringProperties.entrySet().toArray()[0];
CompositeData stringEntry = (CompositeData) compositeDataEntry.getValue();
assertThat(String.valueOf(stringEntry.get("key")), equalTo(KEY));
assertThat(String.valueOf(stringEntry.get("value")), equalTo(VALUE));
}