/** Make sure that we can augment a graph with a single state which is a reject-state. */
@Test
public void testPTAconstruction_singleRejectState() {
Configuration config = mainConfiguration.copy();
RPNIUniversalLearner l =
new RPNIUniversalLearner(
null, new LearnerEvaluationConfiguration(null, null, config, null, null));
config.setLearnerIdMode(Configuration.IDMode.POSITIVE_NEGATIVE);
// set the initial state to be reject
l.getTentativeAutomaton().initPTA();
l.getTentativeAutomaton().getVertex(new LinkedList<Label>()).setAccept(false);
// and check how augmentPTA works with such a PTA
for (boolean maxAutomaton : new boolean[] {true, false}) {
for (List<Label> sequence : buildSet(new String[][] {new String[] {}}, config, converter))
l.getTentativeAutomaton().paths.augmentPTA(sequence, false, maxAutomaton, null);
for (List<Label> sequence : buildSet(new String[][] {}, config, converter))
l.getTentativeAutomaton().paths.augmentPTA(sequence, true, maxAutomaton, null);
DirectedSparseGraph actualC = l.getTentativeAutomaton().pathroutines.getGraph();
Assert.assertEquals(1, actualC.getVertices().size());
Assert.assertEquals(
false,
DeterministicDirectedSparseGraph.isAccept(
((Vertex) actualC.getVertices().iterator().next())));
Assert.assertEquals(0, ((CmpVertex) (actualC.getVertices().iterator().next())).getDepth());
Assert.assertEquals(0, actualC.getEdges().size());
}
}
@Test
public void testAugmentPTA_Simple() // only two traces, both accept
{
Configuration config = mainConfiguration.copy();
config.setLearnerIdMode(Configuration.IDMode.POSITIVE_NEGATIVE);
Set<List<Label>> plusStrings =
buildSet(
new String[][] {new String[] {"a", "b", "c"}, new String[] {"a", "d", "c"}},
config,
converter);
DirectedSparseGraph actualA =
Test_Orig_RPNIBlueFringeLearner.augmentPTA(
DeterministicDirectedSparseGraph.initialise(), plusStrings, true);
DeterministicDirectedSparseGraph.numberVertices(
actualA); // Numbering is necessary to ensure uniqueness of labels used by LearnerGraph
// constructor.
config.setAllowedToCloneNonCmpVertex(true);
LearnerGraph l = new LearnerGraph(config);
LearnerGraph actualC = l.paths.augmentPTA(plusStrings, true, false);
DeterministicDirectedSparseGraph.numberVertices(actualA);
String expectedPTA = "A-a->B--b->C-c->Z1\nB--d->C2-c->Z2";
checkM(expectedPTA, new LearnerGraph(actualA, config), config, converter);
checkM(expectedPTA, actualC, config, converter);
}
private void checkEmptyPTA(
String[][] arrayPlusStrings,
String[][] arrayMinusStrings,
boolean expectMaxAutomataToBeTheSameAsPTA) {
Configuration conf = mainConfiguration.copy();
Set<List<Label>> plusStrings = buildSet(arrayPlusStrings, conf, converter),
minusStrings = buildSet(arrayMinusStrings, conf, converter);
DirectedSparseGraph actualA = null,
actualC = null,
actualD = null,
actualE = null,
actualF = null;
IllegalArgumentException eA = null, eC = null, eD = null, eE = null, eF = null;
try {
actualA = Test_Orig_RPNIBlueFringeLearner.createAugmentedPTA(plusStrings, minusStrings);
} catch (IllegalArgumentException e) {
// ignore this - it might be expected.
eA = e;
}
try {
Configuration config = mainConfiguration.copy();
RPNIUniversalLearner l =
new RPNIUniversalLearner(
null, new LearnerEvaluationConfiguration(null, null, config, null, null));
config.setLearnerIdMode(Configuration.IDMode.POSITIVE_NEGATIVE);
l.init(plusStrings, minusStrings);
actualC = l.getTentativeAutomaton().pathroutines.getGraph();
} catch (IllegalArgumentException e) {
// ignore this - it might be expected.
eC = e;
}
try {
Configuration config = mainConfiguration.copy();
RPNIUniversalLearner l =
new RPNIUniversalLearner(
null, new LearnerEvaluationConfiguration(null, null, config, null, null));
config.setLearnerIdMode(Configuration.IDMode.POSITIVE_NEGATIVE);
PTASequenceEngine engine = buildPTA(plusStrings, minusStrings);
checkPTAConsistency(engine, plusStrings, true);
if (engine.numberOfLeafNodes() > 0) checkPTAConsistency(engine, minusStrings, false);
l.init(engine, 0, 0);
actualD = l.getTentativeAutomaton().pathroutines.getGraph();
} catch (IllegalArgumentException e) {
// ignore this - it might be expected.
eD = e;
}
try {
Configuration config = mainConfiguration.copy();
RPNIUniversalLearner l =
new RPNIUniversalLearner(
null, new LearnerEvaluationConfiguration(null, null, config, null, null));
config.setLearnerIdMode(Configuration.IDMode.POSITIVE_NEGATIVE);
l.init(buildPTA(plusStrings, buildSet(new String[][] {}, config, converter)), 0, 0);
for (List<Label> seq : minusStrings) {
Set<List<Label>> negativeSeq = new HashSet<List<Label>>();
negativeSeq.add(seq);
l.getTentativeAutomaton()
.paths
.augmentPTA(buildPTA(buildSet(new String[][] {}, config, converter), negativeSeq));
}
actualE = l.getTentativeAutomaton().pathroutines.getGraph();
} catch (IllegalArgumentException e) {
// ignore this - it might be expected.
eE = e;
}
try {
Configuration config = mainConfiguration.copy();
RPNIUniversalLearner l =
new RPNIUniversalLearner(
null, new LearnerEvaluationConfiguration(null, null, config, null, null));
config.setLearnerIdMode(Configuration.IDMode.POSITIVE_NEGATIVE);
l.getTentativeAutomaton().initPTA();
l.getTentativeAutomaton().paths.augmentPTA(minusStrings, false, true);
l.getTentativeAutomaton().paths.augmentPTA(plusStrings, true, true);
actualF = l.getTentativeAutomaton().pathroutines.getGraph();
} catch (IllegalArgumentException e) {
// ignore this - it might be expected.
eF = e;
}
if (eA != null) { // an exception has been thrown, hence verify that all way of PTA construction
// have thrown too.
Assert.assertNotNull(eC);
Assert.assertNotNull(eD);
Assert.assertNotNull(eE);
if (expectMaxAutomataToBeTheSameAsPTA) Assert.assertNotNull(eF);
throw eA;
}
Assert.assertNull(eA);
Assert.assertNull(eC);
Assert.assertNull(eD);
Assert.assertNull(eE);
if (expectMaxAutomataToBeTheSameAsPTA) Assert.assertNull(eF);
Assert.assertEquals(1, actualA.getVertices().size());
Assert.assertEquals(
true,
DeterministicDirectedSparseGraph.isAccept(
((Vertex) actualA.getVertices().iterator().next())));
Assert.assertEquals(0, actualA.getEdges().size());
Assert.assertEquals(1, actualC.getVertices().size());
Assert.assertEquals(
true,
DeterministicDirectedSparseGraph.isAccept(
((Vertex) actualC.getVertices().iterator().next())));
Assert.assertEquals(0, ((CmpVertex) (actualC.getVertices().iterator().next())).getDepth());
Assert.assertEquals(0, actualC.getEdges().size());
Assert.assertEquals(1, actualD.getVertices().size());
Assert.assertEquals(
true,
DeterministicDirectedSparseGraph.isAccept(
((Vertex) actualD.getVertices().iterator().next())));
Assert.assertEquals(0, ((CmpVertex) (actualD.getVertices().iterator().next())).getDepth());
Assert.assertEquals(0, actualD.getEdges().size());
Assert.assertEquals(1, actualE.getVertices().size());
Assert.assertEquals(
true,
DeterministicDirectedSparseGraph.isAccept(
((Vertex) actualE.getVertices().iterator().next())));
Assert.assertEquals(0, ((CmpVertex) (actualE.getVertices().iterator().next())).getDepth());
Assert.assertEquals(0, actualE.getEdges().size());
if (expectMaxAutomataToBeTheSameAsPTA) {
Assert.assertEquals(1, actualF.getVertices().size());
Assert.assertEquals(
true,
DeterministicDirectedSparseGraph.isAccept(
((Vertex) actualF.getVertices().iterator().next())));
Assert.assertEquals(0, ((CmpVertex) (actualF.getVertices().iterator().next())).getDepth());
Assert.assertEquals(0, actualF.getEdges().size());
}
}