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

Best EvoMaster code snippet using org.evomaster.client.java.instrumentation.Instrumentator

Source:InstrumentingAgent.java

...25     * WARN: static variable with dynamic state.26     * Forced to use it due to very special nature of how27     * JavaAgents are handled28     */29    private static Instrumentator instrumentator;30    private static String packagePrefixesToCover;31    private static boolean active = false;32    /**33     * This is called to init the JavaAgent when starting a new JVM, eg34     * the config of JavaAgent is passed by command line when the JVM starts.35     *36     * @param args37     * @param inst38     */39    public static void premain(String args, Instrumentation inst) {40        agentmain(args, inst);41    }42    /**43     * Actual method that is going to be called when the JavaAgent is started.44     * This is called to init the JavaAgent when attached to an already running JVM.45     *46     * @param agentArgs in this case, the {@code packagePrefixesToCover}47     * @param inst48     */49    public static void agentmain(String agentArgs, Instrumentation inst) {50        packagePrefixesToCover = agentArgs;51        instrumentator = new Instrumentator(packagePrefixesToCover);52        inst.addTransformer(new TransformerForTests());53        active = true;54        String port = System.getProperty(InputProperties.EXTERNAL_PORT_PROP);55        if (port != null) {56            SimpleLogger.info("Starting remote instrumenting Agent for packages: " + agentArgs);57            AgentController.start(Integer.parseInt(port));58        }59        String sqlDriver = System.getProperty(InputProperties.SQL_DRIVER);60        if (sqlDriver != null) {61            SimpleLogger.info("Initializing P6SPY with base driver " + sqlDriver);62            initP6Spy(sqlDriver);63        }64        String outputFile = System.getProperty(InputProperties.OUTPUT_FILE);65        if(outputFile != null){66            Runtime.getRuntime().addShutdownHook(new Thread(() -> {67                saveCoverageToDisk(outputFile);68            }));69        }70    }71    private static void saveCoverageToDisk(String outputFile) {72        try {73            SimpleLogger.info("Going to save coverage data to " + outputFile);74            ClassScanner.forceLoading(packagePrefixesToCover);75            Path path = Paths.get(outputFile);76            Files.deleteIfExists(path);77            Files.createFile(path);78            PrintWriter writer = new PrintWriter(outputFile, "UTF-8");79            ObjectiveRecorder.printCoveragePerTarget(writer);80            writer.close();81        } catch (IOException e) {82            SimpleLogger.error("Failed to save data to disk: "+e.getMessage());83            throw new RuntimeException(e);84        }85    }86    public static boolean isActive() {87        return active;88    }89    public static void changePackagesToInstrument(String packagePrefixesToCover) {90        instrumentator = new Instrumentator(packagePrefixesToCover);91    }92    public static void initP6Spy(String driver) {93        Objects.requireNonNull(driver);94        //see http://p6spy.readthedocs.io/en/latest/configandusage.html95        System.setProperty("p6spy.config.driverlist", driver);96        System.setProperty("p6spy.config.filter", "true");97        System.setProperty("p6spy.config.include", "select,insert,update,delete");98        System.setProperty("p6spy.config.autoflush", "true");99        System.setProperty("p6spy.config.appender", "com.p6spy.engine.spy.appender.StdoutLogger");100        System.setProperty("p6spy.config.jmx", "false");101        /*102            Note: this is a reference to a class in another module, although103            this module does NOT (and should not) reference it.104            Long story... see documentation on how P6Spy is used in EM....

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.