13034511199

Committed 29 Jan 2025 03:18PM UTC coverage: 94.304% (-0.09%) from 94.389%

Build # 13034511199

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push

github

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mtf90

Commit Message

spmm: improve assertions

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81.25

/oracles/equivalence-oracles/src/main/java/de/learnlib/oracle/equivalence/sba/WMethodEQOracle.java

/* Copyright (C) 2013-2025 TU Dortmund University
 * This file is part of LearnLib <https://learnlib.de>.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package de.learnlib.oracle.equivalence.sba;

import java.util.Collection;
import java.util.stream.Stream;

import de.learnlib.oracle.MembershipOracle;
import de.learnlib.oracle.equivalence.AbstractTestWordEQOracle;
import net.automatalib.alphabet.ProceduralInputAlphabet;
import net.automatalib.automaton.concept.FiniteRepresentation;
import net.automatalib.automaton.procedural.SBA;
import net.automatalib.common.util.collection.IteratorUtil;
import net.automatalib.util.automaton.conformance.SBAWMethodTestsIterator;
import net.automatalib.util.automaton.conformance.WMethodTestsIterator;
import net.automatalib.word.Word;

/**
 * An {@link SBA} version of {@link de.learnlib.oracle.equivalence.WMethodEQOracle} which generates test sequences based
 * on the {@link SBAWMethodTestsIterator W-method} for each procedure.
 *
 * @param <I>
 *         input symbol type
 */
public class WMethodEQOracle<I> extends AbstractTestWordEQOracle<SBA<?, I>, I, Boolean> {

    private final int lookahead;
    private final int expectedSize;

    /**
     * Constructor. Convenience method for {@link #WMethodEQOracle(MembershipOracle, int)} that sets {@code lookahead}
     * to 1.
     *
     * @param sulOracle
     *         interface to the system under learning
     */
    public WMethodEQOracle(MembershipOracle<I, Boolean> sulOracle) {
        this(sulOracle, 1);
    }

    /**
     * Constructor. Convenience method for {@link #WMethodEQOracle(MembershipOracle, int, int)} that sets
     * {@code expectedSize} to 0.
     *
     * @param sulOracle
     *         interface to the system under learning
     * @param lookahead
     *         the maximum length of the "middle" part of the test cases
     */
    public WMethodEQOracle(MembershipOracle<I, Boolean> sulOracle, int lookahead) {
        this(sulOracle, lookahead, 0);
    }

    /**
     * Constructor. Convenience method for {@link #WMethodEQOracle(MembershipOracle, int, int, int)} that sets
     * {@code batchSize} to 1.
     *
     * @param sulOracle
     *         interface to the system under learning
     * @param lookahead
     *         the (minimal) maximum length of the "middle" part of the test cases
     * @param expectedSize
     *         the expected size of the system under learning
     */
    public WMethodEQOracle(MembershipOracle<I, Boolean> sulOracle, int lookahead, int expectedSize) {
        this(sulOracle, lookahead, expectedSize, 1);
    }

    /**
     * Constructor. Uses
     * {@link Math#max(int, int) Math.max}{@code (lookahead, expectedSize - }{@link FiniteRepresentation#size()
     * hypothesis.size()}{@code )} to determine the maximum length of sequences, that should be appended to the
     * transition-cover part of the test sequence to account for the fact that the system under learning may have more
     * states than the current hypothesis.
     *
     * @param sulOracle
     *         interface to the system under learning
     * @param lookahead
     *         the (minimal) maximum length of the "middle" part of the test cases
     * @param expectedSize
     *         the expected size of the system under learning
     * @param batchSize
     *         size of the batches sent to the membership oracle
     *
     * @see WMethodTestsIterator
     */
    public WMethodEQOracle(MembershipOracle<I, Boolean> sulOracle, int lookahead, int expectedSize, int batchSize) {
        super(sulOracle, batchSize);
        this.lookahead = lookahead;
        this.expectedSize = expectedSize;
    }

    @Override
    protected Stream<Word<I>> generateTestWords(SBA<?, I> hypothesis, Collection<? extends I> inputs) {
        if (!(inputs instanceof ProceduralInputAlphabet)) {
            throw new IllegalArgumentException("Inputs are not a procedural alphabet");
        }

        @SuppressWarnings("unchecked")
        final ProceduralInputAlphabet<I> alphabet = (ProceduralInputAlphabet<I>) inputs;

        return IteratorUtil.stream(new SBAWMethodTestsIterator<>(hypothesis,
                                                                 alphabet,
                                                                 Math.max(lookahead,
                                                                          expectedSize - hypothesis.size())));
    }
}

1	/* Copyright (C) 2013-2025 TU Dortmund University
2	* This file is part of LearnLib <https://learnlib.de>.
3	*
4	* Licensed under the Apache License, Version 2.0 (the "License");
5	* you may not use this file except in compliance with the License.
6	* You may obtain a copy of the License at
7	*
8	* http://www.apache.org/licenses/LICENSE-2.0
9	*
10	* Unless required by applicable law or agreed to in writing, software
11	* distributed under the License is distributed on an "AS IS" BASIS,
12	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13	* See the License for the specific language governing permissions and
14	* limitations under the License.
15	*/
16	package de.learnlib.oracle.equivalence.sba;
17
18	import java.util.Collection;
19	import java.util.stream.Stream;
20
21	import de.learnlib.oracle.MembershipOracle;
22	import de.learnlib.oracle.equivalence.AbstractTestWordEQOracle;
23	import net.automatalib.alphabet.ProceduralInputAlphabet;
24	import net.automatalib.automaton.concept.FiniteRepresentation;
25	import net.automatalib.automaton.procedural.SBA;
26	import net.automatalib.common.util.collection.IteratorUtil;
27	import net.automatalib.util.automaton.conformance.SBAWMethodTestsIterator;
28	import net.automatalib.util.automaton.conformance.WMethodTestsIterator;
29	import net.automatalib.word.Word;
30
31	/**
32	* An {@link SBA} version of {@link de.learnlib.oracle.equivalence.WMethodEQOracle} which generates test sequences based
33	* on the {@link SBAWMethodTestsIterator W-method} for each procedure.
34	*
35	* @param <I>
36	* input symbol type
37	*/
38	public class WMethodEQOracle<I> extends AbstractTestWordEQOracle<SBA<?, I>, I, Boolean> {
39
40	private final int lookahead;
41	private final int expectedSize;
42
43	/**
44	* Constructor. Convenience method for {@link #WMethodEQOracle(MembershipOracle, int)} that sets {@code lookahead}
45	* to 1.
46	*
47	* @param sulOracle
48	* interface to the system under learning
49	*/
50	public WMethodEQOracle(MembershipOracle<I, Boolean> sulOracle) {
UNCOV 51	this(sulOracle, 1);	×
UNCOV 52	}	×
53
54	/**
55	* Constructor. Convenience method for {@link #WMethodEQOracle(MembershipOracle, int, int)} that sets
56	* {@code expectedSize} to 0.
57	*
58	* @param sulOracle
59	* interface to the system under learning
60	* @param lookahead
61	* the maximum length of the "middle" part of the test cases
62	*/
63	public WMethodEQOracle(MembershipOracle<I, Boolean> sulOracle, int lookahead) {
64	this(sulOracle, lookahead, 0);	2✔
65	}	2✔
66
67	/**
68	* Constructor. Convenience method for {@link #WMethodEQOracle(MembershipOracle, int, int, int)} that sets
69	* {@code batchSize} to 1.
70	*
71	* @param sulOracle
72	* interface to the system under learning
73	* @param lookahead
74	* the (minimal) maximum length of the "middle" part of the test cases
75	* @param expectedSize
76	* the expected size of the system under learning
77	*/
78	public WMethodEQOracle(MembershipOracle<I, Boolean> sulOracle, int lookahead, int expectedSize) {
79	this(sulOracle, lookahead, expectedSize, 1);	2✔
80	}	2✔
81
82	/**
83	* Constructor. Uses
84	* {@link Math#max(int, int) Math.max}{@code (lookahead, expectedSize - }{@link FiniteRepresentation#size()
85	* hypothesis.size()}{@code )} to determine the maximum length of sequences, that should be appended to the
86	* transition-cover part of the test sequence to account for the fact that the system under learning may have more
87	* states than the current hypothesis.
88	*
89	* @param sulOracle
90	* interface to the system under learning
91	* @param lookahead
92	* the (minimal) maximum length of the "middle" part of the test cases
93	* @param expectedSize
94	* the expected size of the system under learning
95	* @param batchSize
96	* size of the batches sent to the membership oracle
97	*
98	* @see WMethodTestsIterator
99	*/
100	public WMethodEQOracle(MembershipOracle<I, Boolean> sulOracle, int lookahead, int expectedSize, int batchSize) {
101	super(sulOracle, batchSize);	2✔
102	this.lookahead = lookahead;	2✔
103	this.expectedSize = expectedSize;	2✔
104	}	2✔
105
106	@Override
107	protected Stream<Word<I>> generateTestWords(SBA<?, I> hypothesis, Collection<? extends I> inputs) {
108	if (!(inputs instanceof ProceduralInputAlphabet)) {	2✔
UNCOV 109	throw new IllegalArgumentException("Inputs are not a procedural alphabet");	×
110	}
111
112	@SuppressWarnings("unchecked")
113	final ProceduralInputAlphabet<I> alphabet = (ProceduralInputAlphabet<I>) inputs;	2✔
114
115	return IteratorUtil.stream(new SBAWMethodTestsIterator<>(hypothesis,	2✔
116	alphabet,
117	Math.max(lookahead,	2✔
118	expectedSize - hypothesis.size())));	2✔
119	}
120	}

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