How to use CoverageClassVisitor class of org.evomaster.client.java.instrumentation.coverage package

Best EvoMaster code snippet using org.evomaster.client.java.instrumentation.coverage.CoverageClassVisitor

Source:CoverageClassVisitor.java

...9/**10 * Add instrumentations to keep track of which statements/lines11 * are covered during test execution12 */13public class CoverageClassVisitor extends ClassVisitor {14    private final String bytecodeClassName;15    public CoverageClassVisitor(ClassVisitor cv, ClassName className) {16        super(Constants.ASM, cv);17        bytecodeClassName = className.getBytecodeName();18        UnitsInfoRecorder.markNewUnit(className.getFullNameWithDots());19    }20    @Override21    public MethodVisitor visitMethod(int methodAccess,22                                     String name,23                                     String descriptor,24                                     String signature,25                                     String[] exceptions) {26        MethodVisitor mv = super.visitMethod(27                methodAccess, name, descriptor, signature, exceptions);28        /*29            Methods added by the compiler (eg synthetics and bridges) are...

CoverageClassVisitor

Using AI Code Generation

1package org.evomaster.client.java.instrumentation.example;2import org.evomaster.client.java.instrumentation.coverage.CoverageClassVisitor;3import org.evomaster.client.java.instrumentation.heuristic.CoverageTestFitness;4import org.evomaster.client.java.instrumentation.heuristic.Truthness;5import org.objectweb.asm.ClassReader;6import org.objectweb.asm.ClassWriter;7import org.objectweb.asm.Opcodes;8import org.objectweb.asm.util.CheckClassAdapter;9import java.io.IOException;10import java.util.List;11public class CoverageExample {12    public static void main(String[] args) throws IOException {13        String className = "org/evomaster/client/java/instrumentation/example/ExampleClass";14        ClassReader reader = new ClassReader(className);15        ClassWriter writer = new ClassWriter(ClassWriter.COMPUTE_FRAMES);16        CheckClassAdapter checkClassAdapter = new CheckClassAdapter(writer, false);17        CoverageClassVisitor coverageClassVisitor = new CoverageClassVisitor(Opcodes.ASM7, checkClassAdapter, className);18        reader.accept(coverageClassVisitor, ClassReader.EXPAND_FRAMES);19        List<CoverageTestFitness> testFitnesses = coverageClassVisitor.getCoverageGoals();20        for (CoverageTestFitness testFitness : testFitnesses) {21            System.out.println("goal: " + testFitness.getGoalClassName() + " " + testFitness.getTestMethodName());22            System.out.println("description: " + testFitness.getDescription());23            System.out.println("coverage: " + testFitness.getFitness(Truthness.TRUE));24            System.out.println("fitness: " + testFitness.getFitness(Truthness.FALSE));25        }26    }27}

CoverageClassVisitor

Using AI Code Generation

1import org.evomaster.client.java.instrumentation.coverage.CoverageClassVisitor;2import java.io.File;3import java.io.FileWriter;4import java.io.IOException;5import java.io.PrintWriter;6import java.lang.instrument.ClassFileTransformer;7import java.lang.instrument.IllegalClassFormatException;8import java.security.ProtectionDomain;9public class CoverageTransformer implements ClassFileTransformer {10    private static final String COVERAGE_FILE = "coverage.json";11    private final CoverageClassVisitor visitor;12    public CoverageTransformer() {13        visitor = new CoverageClassVisitor();14    }15    public byte[] transform(ClassLoader loader, String className, Class<?> classBeingRedefined, ProtectionDomain protectionDomain, byte[] classfileBuffer) throws IllegalClassFormatException {16        if (className.startsWith("java/") || className.startsWith("javax/")) {17            return classfileBuffer;18        }19        try {20            return visitor.transform(loader, className, classfileBuffer);21        } catch (Throwable e) {22            System.err.println("ERROR: " + e.getMessage());23            e.printStackTrace();24            return classfileBuffer;25        }26    }27    public static void writeCoverageToFile() {28        try {29            File file = new File(COVERAGE_FILE);30            file.createNewFile();31            FileWriter fileWriter = new FileWriter(file);32            PrintWriter printWriter = new PrintWriter(fileWriter);33            printWriter.print(CoverageClassVisitor.getJSON());34            printWriter.close();35        } catch (IOException e) {36            e.printStackTrace();37        }38    }39}

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.