public void testFeatureVersion() {
AuState aus = new AuState(mau, historyRepo);
assertNull(aus.getFeatureVersion(Plugin.Feature.Substance));
assertNull(aus.getFeatureVersion(Plugin.Feature.Metadata));
assertNull(aus.getFeatureVersion(Plugin.Feature.Poll));
aus.setFeatureVersion(Plugin.Feature.Metadata, "foo");
assertNull(aus.getFeatureVersion(Plugin.Feature.Substance));
assertEquals("foo", aus.getFeatureVersion(Plugin.Feature.Metadata));
aus.setFeatureVersion(Plugin.Feature.Substance, "sub_42");
assertEquals("sub_42", aus.getFeatureVersion(Plugin.Feature.Substance));
assertEquals("foo", aus.getFeatureVersion(Plugin.Feature.Metadata));
assertNull(aus.getFeatureVersion(Plugin.Feature.Poll));
}
