How to use premain method of com.tngtech.jgiven.timing.TimerInjectorAgent class

Best JGiven code snippet using com.tngtech.jgiven.timing.TimerInjectorAgent.premain

Source:TimerInjectorAgent.java

...10public class TimerInjectorAgent {11    /**12     * The method implementing the code injection done by Java Agents.13     */14    public static void premain(String args, Instrumentation instrumentation) {15        new AgentBuilder.Default()16                .type(ElementMatchers.isSubTypeOf(ScenarioBase.class))17                .transform((builder, type, classLoader, module) ->18                        builder.method(ElementMatchers.named("initialize")19                                .or(ElementMatchers.named("finished")))20                                .intercept(MethodDelegation.to(ManageTimerInterceptor.class))21                ).installOn(instrumentation);22    }23}...

premain

Using AI Code Generation

1public class TimerInjectorAgent {2    public static void premain(String agentArgs, Instrumentation inst) throws ClassNotFoundException, UnmodifiableClassException {3        inst.addTransformer(new TimerInjector(), true);4        inst.retransformClasses(Class.forName("com.tngtech.jgiven.timing.TimerInjectorAgent"));5    }6}7public class TimerInjector implements ClassFileTransformer {8    public byte[] transform(ClassLoader loader, String className, Class<?> classBeingRedefined, ProtectionDomain protectionDomain, byte[] classfileBuffer) throws IllegalClassFormatException {9        if (className.equals("com/tngtech/jgiven/timing/TimerInjectorAgent")) {10            ClassReader classReader = new ClassReader(classfileBuffer);11            ClassWriter classWriter = new ClassWriter(classReader, ClassWriter.COMPUTE_FRAMES);12            ClassVisitor classVisitor = new ClassAdapter(classWriter) {13                public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {14                    MethodVisitor methodVisitor = super.visitMethod(access, name, desc, signature, exceptions);15                    if (name.equals("premain")) {16                        return new MethodAdapter(methodVisitor) {17                            public void visitCode() {18                                super.visitCode();19                                mv.visitVarInsn(ALOAD, 1);20                                mv.visitLdcInsn(Type.getType("Lcom/tngtech/jgiven/timing/Timer;"));21                                mv.visitMethodInsn(INVOKESTATIC, "com/tngtech/jgiven/timing/TimerInjector", "injectTimer", "(Ljava/lang/String;Ljava/lang/Class;)Ljava/lang/Object;", false);22                                mv.visitVarInsn(ASTORE, 2);23                                mv.visitVarInsn(ALOAD, 2);24                                Label l0 = new Label();25                                mv.visitJumpInsn(IFNULL, l0);26                                mv.visitVarInsn(ALOAD, 2);27                                mv.visitTypeInsn(CHECKCAST, "com/tngtech/jgiven/timing/Timer");28                                mv.visitFieldInsn(PUTSTATIC, "com/tngtech/jgiven/timing/Timer", "INSTANCE", "Lcom/tngtech/jgiven/timing/Timer;");

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.