Examples with TargetLoader org.jacoco.core.test.TargetLoader used on opensource projects

Example 1 with TargetLoader

use of org.jacoco.core.test.TargetLoader in project jacoco by jacoco.

the class CyclomaticComplexityTest method instrument.

private void instrument(final Class<? extends Target> clazz) throws Exception {
    bytes = TargetLoader.getClassDataAsBytes(clazz);
    final byte[] instrumented = new Instrumenter(runtime).instrument(bytes, "TestTarget");
    final TargetLoader loader = new TargetLoader();
    target = (Target) loader.add(clazz, instrumented).newInstance();
}

Example 2 with TargetLoader

use of org.jacoco.core.test.TargetLoader in project jacoco by jacoco.

the class ResizeInstructionsTest method should_not_require_computation_of_common_superclass.

/**
 * Test of ASM bug
 * <a href= "https://gitlab.ow2.org/asm/asm/issues/317630">#317630</a> that
 * caused {@code java.lang.ClassNotFoundException}.
 */
@Test
public void should_not_require_computation_of_common_superclass() throws Exception {
    final String className = "Example";
    final ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES) {

        @Override
        protected String getCommonSuperClass(final String type1, final String type2) {
            computedCommonSuperClass |= className.equals(type1) || className.equals(type2);
            return "java/lang/Object";
        }
    };
    cw.visit(Opcodes.V1_5, Opcodes.ACC_PUBLIC, className, null, "java/lang/Object", null);
    final MethodVisitor mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "m", "()V", null, null);
    mv.visitCode();
    addCauseOfResizeInstructions(mv);
    addCauseOfGetCommonSuperClass(mv);
    mv.visitMaxs(1, 1);
    mv.visitEnd();
    cw.visitEnd();
    final byte[] original = cw.toByteArray();
    assertTrue(computedCommonSuperClass);
    new TargetLoader().add(className, original);
    final byte[] instrumented = instrumenter.instrument(original, className);
    new TargetLoader().add(className, instrumented);
}

Example 3 with TargetLoader

use of org.jacoco.core.test.TargetLoader in project jacoco by jacoco.

the class ResizeInstructionsTest method should_not_loose_InnerClasses_attribute.

/**
 * Test of ASM bug
 * <a href="https://gitlab.ow2.org/asm/asm/issues/317792">#317792</a>.
 */
@Test
public void should_not_loose_InnerClasses_attribute() throws Exception {
    // FIXME fails without COMPUTE_FRAMES because of
    // https://gitlab.ow2.org/asm/asm/issues/317800
    byte[] source = TargetLoader.getClassDataAsBytes(Inner.class);
    final int version = BytecodeVersion.get(source);
    source = BytecodeVersion.downgradeIfNeeded(version, source);
    final ClassReader cr = new ClassReader(source);
    final ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES);
    cr.accept(new ClassVisitor(InstrSupport.ASM_API_VERSION, cw) {

        @Override
        public void visitEnd() {
            final MethodVisitor mv = cv.visitMethod(0, "m", "()V", null, null);
            mv.visitCode();
            addCauseOfResizeInstructions(mv);
            mv.visitInsn(Opcodes.NOP);
            mv.visitMaxs(2, 1);
            mv.visitEnd();
            super.visitEnd();
        }
    }, 0);
    source = cw.toByteArray();
    BytecodeVersion.set(source, version);
    final byte[] bytes = instrumenter.instrument(source, "");
    final TargetLoader targetLoader = new TargetLoader();
    final Class<?> outer = targetLoader.add(ResizeInstructionsTest.class, TargetLoader.getClassDataAsBytes(ResizeInstructionsTest.class));
    final Class<?> inner = targetLoader.add(Inner.class, bytes);
    assertSame(outer, inner.getEnclosingClass());
    assertNotNull(inner.getEnclosingClass());
    assertSame(outer, inner.getDeclaringClass());
    assertNotNull(inner.getDeclaringClass());
}

Example 4 with TargetLoader

use of org.jacoco.core.test.TargetLoader in project jacoco by jacoco.

the class RuntimeTestBase method generateAndInstantiateClass.

/**
 * Creates a new class with the given id, loads this class and instantiates
 * it. The constructor of the generated class will request the probe array
 * from the runtime under test.
 */
private ITarget generateAndInstantiateClass(int classid) throws InstantiationException, IllegalAccessException {
    final String className = "org/jacoco/test/targets/RuntimeTestTarget_" + classid;
    Type classType = Type.getObjectType(className);
    final ClassWriter writer = new ClassWriter(0);
    writer.visit(Opcodes.V1_5, Opcodes.ACC_PUBLIC, className, null, "java/lang/Object", new String[] { Type.getInternalName(ITarget.class) });
    writer.visitField(InstrSupport.DATAFIELD_ACC, InstrSupport.DATAFIELD_NAME, InstrSupport.DATAFIELD_DESC, null, null);
    // Constructor
    GeneratorAdapter gen = new GeneratorAdapter(writer.visitMethod(Opcodes.ACC_PUBLIC, "<init>", "()V", null, new String[0]), Opcodes.ACC_PUBLIC, "<init>", "()V");
    gen.visitCode();
    gen.loadThis();
    gen.invokeConstructor(Type.getType(Object.class), new Method("<init>", "()V"));
    gen.loadThis();
    final int size = runtime.generateDataAccessor(classid, className, 2, gen);
    gen.putStatic(classType, InstrSupport.DATAFIELD_NAME, Type.getObjectType(InstrSupport.DATAFIELD_DESC));
    gen.returnValue();
    gen.visitMaxs(size + 1, 0);
    gen.visitEnd();
    // get()
    gen = new GeneratorAdapter(writer.visitMethod(Opcodes.ACC_PUBLIC, "get", "()[Z", null, new String[0]), Opcodes.ACC_PUBLIC, "get", "()[Z");
    gen.visitCode();
    gen.getStatic(classType, InstrSupport.DATAFIELD_NAME, Type.getObjectType(InstrSupport.DATAFIELD_DESC));
    gen.returnValue();
    gen.visitMaxs(1, 0);
    gen.visitEnd();
    // a()
    gen = new GeneratorAdapter(writer.visitMethod(Opcodes.ACC_PUBLIC, "a", "()V", null, new String[0]), Opcodes.ACC_PUBLIC, "a", "()V");
    gen.visitCode();
    gen.getStatic(classType, InstrSupport.DATAFIELD_NAME, Type.getObjectType(InstrSupport.DATAFIELD_DESC));
    gen.push(0);
    gen.push(1);
    gen.arrayStore(Type.BOOLEAN_TYPE);
    gen.returnValue();
    gen.visitMaxs(3, 0);
    gen.visitEnd();
    // b()
    gen = new GeneratorAdapter(writer.visitMethod(Opcodes.ACC_PUBLIC, "b", "()V", null, new String[0]), Opcodes.ACC_PUBLIC, "b", "()V");
    gen.visitCode();
    gen.getStatic(classType, InstrSupport.DATAFIELD_NAME, Type.getObjectType(InstrSupport.DATAFIELD_DESC));
    gen.push(1);
    gen.push(1);
    gen.arrayStore(Type.BOOLEAN_TYPE);
    gen.returnValue();
    gen.visitMaxs(3, 0);
    gen.visitEnd();
    writer.visitEnd();
    final TargetLoader loader = new TargetLoader();
    return (ITarget) loader.add(className.replace('/', '.'), writer.toByteArray()).newInstance();
}

Example 5 with TargetLoader

use of org.jacoco.core.test.TargetLoader in project jacoco by jacoco.

the class OfflineInstrumentationAccessGeneratorTest method generateAndInstantiateClass.

/**
 * Creates a new class with the given id, loads this class and instantiates
 * it. The constructor of the generated class will request the probe array
 * from the access generator under test.
 */
private ITarget generateAndInstantiateClass(int classid) throws InstantiationException, IllegalAccessException {
    final String className = "org/jacoco/test/targets/RuntimeTestTarget_" + classid;
    Type classType = Type.getObjectType(className);
    final ClassWriter writer = new ClassWriter(0);
    writer.visit(Opcodes.V1_5, Opcodes.ACC_PUBLIC, className, null, "java/lang/Object", new String[] { Type.getInternalName(ITarget.class) });
    writer.visitField(InstrSupport.DATAFIELD_ACC, InstrSupport.DATAFIELD_NAME, InstrSupport.DATAFIELD_DESC, null, null);
    // Constructor
    GeneratorAdapter gen = new GeneratorAdapter(writer.visitMethod(Opcodes.ACC_PUBLIC, "<init>", "()V", null, new String[0]), Opcodes.ACC_PUBLIC, "<init>", "()V");
    gen.visitCode();
    gen.loadThis();
    gen.invokeConstructor(Type.getType(Object.class), new Method("<init>", "()V"));
    gen.loadThis();
    final int size = generator.generateDataAccessor(classid, className, 2, gen);
    gen.putStatic(classType, InstrSupport.DATAFIELD_NAME, Type.getObjectType(InstrSupport.DATAFIELD_DESC));
    gen.returnValue();
    gen.visitMaxs(size + 1, 0);
    gen.visitEnd();
    // get()
    gen = new GeneratorAdapter(writer.visitMethod(Opcodes.ACC_PUBLIC, "get", "()[Z", null, new String[0]), Opcodes.ACC_PUBLIC, "get", "()[Z");
    gen.visitCode();
    gen.getStatic(classType, InstrSupport.DATAFIELD_NAME, Type.getObjectType(InstrSupport.DATAFIELD_DESC));
    gen.returnValue();
    gen.visitMaxs(1, 0);
    gen.visitEnd();
    writer.visitEnd();
    final TargetLoader loader = new TargetLoader();
    return (ITarget) loader.add(className.replace('/', '.'), writer.toByteArray()).newInstance();
}