public void testSubstanceState() {
AuState aus = new AuState(mau, historyRepo);
assertEquals(SubstanceChecker.State.Unknown, aus.getSubstanceState());
assertFalse(aus.hasNoSubstance());
aus.setSubstanceState(SubstanceChecker.State.Yes);
assertEquals(1, historyRepo.getAuStateStoreCount());
assertEquals(SubstanceChecker.State.Yes, aus.getSubstanceState());
assertFalse(aus.hasNoSubstance());
aus.setSubstanceState(SubstanceChecker.State.No);
assertEquals(2, historyRepo.getAuStateStoreCount());
assertEquals(SubstanceChecker.State.No, aus.getSubstanceState());
assertTrue(aus.hasNoSubstance());
assertNotEquals("2", aus.getFeatureVersion(Plugin.Feature.Substance));
mplug.setFeatureVersionMap(MapUtil.map(Plugin.Feature.Substance, "2"));
aus.setSubstanceState(SubstanceChecker.State.Yes);
// changing both the substance state and feature version should store
// only once
assertEquals(3, historyRepo.getAuStateStoreCount());
assertEquals(SubstanceChecker.State.Yes, aus.getSubstanceState());
assertEquals("2", aus.getFeatureVersion(Plugin.Feature.Substance));
}