protected void testEqualityAndSubstitutionNoAxiomsKBabcdPFFASucceeds(
mf_i_InferenceProcedure infp, boolean expectedToFail) {
mf_KnowledgeBase akb =
mf_KnowledgeBaseExamples.createABCDEqualityAndSubstitutionKnowledgeBase(infp, false);
List<mf_i_NodeTerm> terms = new ArrayList<mf_i_NodeTerm>();
terms.add(new mf_SymbolConstant("A"));
mf_NodeTermFunction fa = new mf_NodeTermFunction("F", terms);
terms = new ArrayList<mf_i_NodeTerm>();
terms.add(fa);
mf_NodeTermFunction ffa = new mf_NodeTermFunction("F", terms);
terms = new ArrayList<mf_i_NodeTerm>();
terms.add(ffa);
mf_Predicate query = new mf_Predicate("P", terms);
mf_i_InferenceResult answer = akb.ask(query);
Assert.assertTrue(null != answer);
if (expectedToFail) {
Assert.assertTrue(answer.isPossiblyFalse());
Assert.assertFalse(answer.isTrue());
Assert.assertFalse(answer.isUnknownDueToTimeout());
Assert.assertFalse(answer.isPartialResultDueToTimeout());
Assert.assertTrue(0 == answer.getProofs().size());
} else {
Assert.assertFalse(answer.isPossiblyFalse());
Assert.assertTrue(answer.isTrue());
Assert.assertFalse(answer.isUnknownDueToTimeout());
Assert.assertFalse(answer.isPartialResultDueToTimeout());
Assert.assertTrue(1 == answer.getProofs().size());
Assert.assertTrue(0 == answer.getProofs().get(0).getAnswerBindings().size());
}
}
protected void testEqualityNoAxiomsKBabcAEqualsCSucceeds(
mf_i_InferenceProcedure infp, boolean expectedToFail) {
mf_KnowledgeBase akb = mf_KnowledgeBaseExamples.createABCEqualityKnowledgeBase(infp, false);
mf_SentenceAtomicTermEquality query =
new mf_SentenceAtomicTermEquality(new mf_SymbolConstant("A"), new mf_SymbolConstant("C"));
mf_i_InferenceResult answer = akb.ask(query);
Assert.assertTrue(null != answer);
if (expectedToFail) {
Assert.assertTrue(answer.isPossiblyFalse());
Assert.assertFalse(answer.isTrue());
Assert.assertFalse(answer.isUnknownDueToTimeout());
Assert.assertFalse(answer.isPartialResultDueToTimeout());
Assert.assertTrue(0 == answer.getProofs().size());
} else {
Assert.assertFalse(answer.isPossiblyFalse());
Assert.assertTrue(answer.isTrue());
Assert.assertFalse(answer.isUnknownDueToTimeout());
Assert.assertFalse(answer.isPartialResultDueToTimeout());
Assert.assertTrue(1 == answer.getProofs().size());
Assert.assertTrue(0 == answer.getProofs().get(0).getAnswerBindings().size());
}
}
protected void testFullFOLKBLovesAnimalQueryKillsJackTunaFalse(
mf_i_InferenceProcedure infp, boolean expectedToTimeOut) {
mf_KnowledgeBase akb = mf_KnowledgeBaseExamples.createLovesAnimalKnowledgeBase(infp);
List<mf_i_NodeTerm> terms = new ArrayList<mf_i_NodeTerm>();
terms.add(new mf_SymbolConstant("Jack"));
terms.add(new mf_SymbolConstant("Tuna"));
mf_Predicate query = new mf_Predicate("Kills", terms);
mf_i_InferenceResult answer = akb.ask(query);
Assert.assertTrue(null != answer);
if (expectedToTimeOut) {
Assert.assertFalse(answer.isPossiblyFalse());
Assert.assertFalse(answer.isTrue());
Assert.assertTrue(answer.isUnknownDueToTimeout());
Assert.assertFalse(answer.isPartialResultDueToTimeout());
Assert.assertTrue(0 == answer.getProofs().size());
} else {
Assert.assertTrue(answer.isPossiblyFalse());
Assert.assertFalse(answer.isTrue());
Assert.assertFalse(answer.isUnknownDueToTimeout());
Assert.assertFalse(answer.isPartialResultDueToTimeout());
Assert.assertTrue(0 == answer.getProofs().size());
}
}
protected void testHornClauseKBRingOfThievesQuerySkisXReturnsNancyRedBertDrew(
mf_i_InferenceProcedure infp) {
mf_KnowledgeBase rotkb = mf_KnowledgeBaseExamples.createRingOfThievesKnowledgeBase(infp);
List<mf_i_NodeTerm> terms = new ArrayList<mf_i_NodeTerm>();
terms.add(new mf_NodeTermVariable("x"));
mf_Predicate query = new mf_Predicate("Skis", terms);
mf_i_InferenceResult answer = rotkb.ask(query);
Assert.assertTrue(null != answer);
Assert.assertFalse(answer.isPossiblyFalse());
Assert.assertTrue(answer.isTrue());
Assert.assertFalse(answer.isUnknownDueToTimeout());
// DB can expand infinitely so is only partial.
Assert.assertTrue(answer.isPartialResultDueToTimeout());
Assert.assertEquals(4, answer.getProofs().size());
Assert.assertEquals(1, answer.getProofs().get(0).getAnswerBindings().size());
Assert.assertEquals(1, answer.getProofs().get(1).getAnswerBindings().size());
Assert.assertEquals(1, answer.getProofs().get(2).getAnswerBindings().size());
Assert.assertEquals(1, answer.getProofs().get(3).getAnswerBindings().size());
List<mf_SymbolConstant> expected = new ArrayList<mf_SymbolConstant>();
expected.add(new mf_SymbolConstant("Nancy"));
expected.add(new mf_SymbolConstant("Red"));
expected.add(new mf_SymbolConstant("Bert"));
expected.add(new mf_SymbolConstant("Drew"));
for (mf_i_Proof p : answer.getProofs()) {
expected.remove(p.getAnswerBindings().get(new mf_NodeTermVariable("x")));
}
Assert.assertEquals(0, expected.size());
}
protected void testDefiniteClauseKBKingsQueryKingXReturnsJohnAndRichardSucceeds(
mf_i_InferenceProcedure infp) {
mf_KnowledgeBase kkb = mf_KnowledgeBaseExamples.createKingsKnowledgeBase(infp);
List<mf_i_NodeTerm> terms = new ArrayList<mf_i_NodeTerm>();
terms.add(new mf_NodeTermVariable("x"));
mf_Predicate query = new mf_Predicate("King", terms);
mf_i_InferenceResult answer = kkb.ask(query);
Assert.assertTrue(null != answer);
Assert.assertFalse(answer.isPossiblyFalse());
Assert.assertTrue(answer.isTrue());
Assert.assertFalse(answer.isUnknownDueToTimeout());
Assert.assertFalse(answer.isPartialResultDueToTimeout());
Assert.assertTrue(2 == answer.getProofs().size());
Assert.assertTrue(1 == answer.getProofs().get(0).getAnswerBindings().size());
Assert.assertTrue(1 == answer.getProofs().get(1).getAnswerBindings().size());
boolean gotJohn, gotRichard;
gotJohn = gotRichard = false;
mf_SymbolConstant cJohn = new mf_SymbolConstant("John");
mf_SymbolConstant cRichard = new mf_SymbolConstant("Richard");
for (mf_i_Proof p : answer.getProofs()) {
Map<mf_NodeTermVariable, mf_i_NodeTerm> ans = p.getAnswerBindings();
Assert.assertEquals(1, ans.size());
if (cJohn.equals(ans.get(new mf_NodeTermVariable("x")))) {
gotJohn = true;
}
if (cRichard.equals(ans.get(new mf_NodeTermVariable("x")))) {
gotRichard = true;
}
}
Assert.assertTrue(gotJohn);
Assert.assertTrue(gotRichard);
}
protected void testDefiniteClauseKBKingsQueryRichardEvilFalse(mf_i_InferenceProcedure infp) {
mf_KnowledgeBase kkb = mf_KnowledgeBaseExamples.createKingsKnowledgeBase(infp);
List<mf_i_NodeTerm> terms = new ArrayList<mf_i_NodeTerm>();
terms.add(new mf_SymbolConstant("Richard"));
mf_Predicate query = new mf_Predicate("Evil", terms);
mf_i_InferenceResult answer = kkb.ask(query);
Assert.assertTrue(null != answer);
Assert.assertTrue(answer.isPossiblyFalse());
Assert.assertFalse(answer.isTrue());
Assert.assertFalse(answer.isUnknownDueToTimeout());
Assert.assertFalse(answer.isPartialResultDueToTimeout());
Assert.assertTrue(0 == answer.getProofs().size());
}
protected void testDefiniteClauseKBKingsQueryEvilXReturnsJohnSucceeds(
mf_i_InferenceProcedure infp) {
mf_KnowledgeBase kkb = mf_KnowledgeBaseExamples.createKingsKnowledgeBase(infp);
List<mf_i_NodeTerm> terms = new ArrayList<mf_i_NodeTerm>();
terms.add(new mf_NodeTermVariable("x"));
mf_Predicate query = new mf_Predicate("Evil", terms);
mf_i_InferenceResult answer = kkb.ask(query);
Assert.assertTrue(null != answer);
Assert.assertFalse(answer.isPossiblyFalse());
Assert.assertTrue(answer.isTrue());
Assert.assertFalse(answer.isUnknownDueToTimeout());
Assert.assertFalse(answer.isPartialResultDueToTimeout());
Assert.assertTrue(1 == answer.getProofs().size());
Assert.assertTrue(1 == answer.getProofs().get(0).getAnswerBindings().size());
Assert.assertEquals(
new mf_SymbolConstant("John"),
answer.getProofs().get(0).getAnswerBindings().get(new mf_NodeTermVariable("x")));
}
protected void testEqualityAndSubstitutionAxiomsKBabcdFFASucceeds(mf_i_InferenceProcedure infp) {
mf_KnowledgeBase akb =
mf_KnowledgeBaseExamples.createABCDEqualityAndSubstitutionKnowledgeBase(infp, true);
List<mf_i_NodeTerm> terms = new ArrayList<mf_i_NodeTerm>();
terms.add(new mf_SymbolConstant("A"));
mf_NodeTermFunction fa = new mf_NodeTermFunction("F", terms);
terms = new ArrayList<mf_i_NodeTerm>();
terms.add(fa);
mf_SentenceAtomicTermEquality query =
new mf_SentenceAtomicTermEquality(
new mf_NodeTermFunction("F", terms), new mf_SymbolConstant("A"));
mf_i_InferenceResult answer = akb.ask(query);
Assert.assertTrue(null != answer);
Assert.assertFalse(answer.isPossiblyFalse());
Assert.assertTrue(answer.isTrue());
Assert.assertFalse(answer.isUnknownDueToTimeout());
Assert.assertFalse(answer.isPartialResultDueToTimeout());
Assert.assertTrue(1 == answer.getProofs().size());
Assert.assertTrue(0 == answer.getProofs().get(0).getAnswerBindings().size());
}