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How to use heuristic method of org.evomaster.client.java.instrumentation.coverage.noninteger.NonIntegerComparisons class

Best EvoMaster code snippet using org.evomaster.client.java.instrumentation.coverage.noninteger.NonIntegerComparisons.heuristic

Source:NonIntegerComparisons.java

1package org.evomaster.client.java.instrumentation.coverage.noninteger;2import org.evomaster.client.java.instrumentation.coverage.methodreplacement.DistanceHelper;3import org.evomaster.client.java.instrumentation.heuristic.TruthnessUtils;4import org.evomaster.client.java.instrumentation.staticstate.ExecutionTracer;5/**6 * Method replacement for LCMP, DCMPL, DCMPG, FCMPL, FCMPG instructions.7 * Those are used for when long, double and float numbers are compared.8 * See:9 * https://docs.oracle.com/javase/specs/jvms/se7/html/jvms-6.html10 *11 * Created by arcuri82 on 28-Feb-20.12 */13public class NonIntegerComparisons {14    /*15        WARN: all the names of the public methods here are used in the16        bytecode instrumentation. If change any name, should also change17        the instrumentator18     */19    private static final double REACHED = 0.2d;20    private static double heuristic(double distance){21        //value in [0,1], proportional to distance22        double normalized = TruthnessUtils.normalizeValue(distance);23        //the higher the distance, the worse the score24        double score = 1d - normalized;25        double scaled = REACHED + ((1d-REACHED) * score);26        return scaled;27    }28    public static int replaceLCMP(long a, long b, String id){29        double distance = DistanceHelper.getDistanceToEquality(a, b);30        double less = 0;31        double eq = 0;32        double greater = 0;33        int res;34        if(a == b){35            less = REACHED;36            eq = 1d;37            greater = REACHED;38            res = 0;39        } else if(a < b){40            less = 1d;41            eq = heuristic(distance);42            greater = heuristic(DistanceHelper.increasedDistance(distance, 1));43            res = -1;44        } else {45            assert  a > b;46            less = heuristic(DistanceHelper.increasedDistance(distance, 1));47            eq = heuristic(distance);48            greater = 1d;49            res = +1;50        }51        ExecutionTracer.executedNumericComparison(id, less, eq, greater);52        return res;53    }54    public static int replaceDCMPG(double a, double b, String id) {55        return replaceDCMP(a, b, id, 1);56    }57    public static int replaceDCMPL(double a, double b, String id) {58        return replaceDCMP(a, b, id, -1);59    }60    public static int replaceFCMPG(float a, float b, String id) {61        return replaceDCMP(a, b, id, 1);62    }63    public static int replaceFCMPL(float a, float b, String id) {64        return replaceDCMP(a, b, id, -1);65    }66    private static int replaceDCMP(double a, double b, String id, int resWhenNotFinite){67        double less = 0;68        double eq = 0;69        double greater = 0;70        int res;71        if (!Double.isFinite(a) || !Double.isFinite(b)) {72            less = REACHED;73            eq = REACHED;74            greater = REACHED;75            res = resWhenNotFinite;76        } else {77            double distance = DistanceHelper.getDistanceToEquality(a, b);78            if (a == b) {79                less = REACHED;80                eq = 1d;81                greater = REACHED;82                res = 0;83            } else if (a < b) {84                less = 1d;85                eq = heuristic(distance);86                greater = heuristic(DistanceHelper.increasedDistance(distance, 1));87                res = -1;88            } else {89                assert a > b;90                less = heuristic(DistanceHelper.increasedDistance(distance, 1));91                eq = heuristic(distance);92                greater = 1d;93                res = +1;94            }95        }96        ExecutionTracer.executedNumericComparison(id, less, eq, greater);97        return res;98    }99}...

heuristic

Using AI Code Generation

1    public void testNonIntegerComparisons() throws Exception {2        ControllerDto dto = getControllerDto(baseUrlOfSut, "org.evomaster.client.java.instrumentation.example.noninteger.NonIntegerComparisons");3        List<IndividualDto> inds = getTestSuiteSolution(dto, 10, 0.6);4        assertTrue(inds.size() > 0);5    }6}

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