testng的分析一

本文主要是介绍testng的分析一，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

运行的代码是 自己设置listener, test class 设置是.class, 看看这个是testng run的路线

	TestListenerAdapter testListenerAdapter = new TestListenerAdapter();TestNG testNG = new TestNG();testNG.setTestClasses(new Class[]{test2.class});testNG.addListener(testListenerAdapter);testNG.run();List<ITestResult> testresults =testListenerAdapter.getPassedTests();System.out.println(testresults.get(0).getStatus());

testNG.ru()
then we will enter TestNG 的方法，进入 这个方法之前，我们已经将testclass传入了testng对像，但是未设置testsuite。
问题，testclass什么时候会被testng使用，并且会传给什么对象去处理。

public void run() {initializeSuitesAndJarFile();initializeConfiguration();initializeDefaultListeners();initializeCommandLineSuites();initializeCommandLineSuitesParams();initializeCommandLineSuitesGroups();sanityCheck();List<ISuite> suiteRunners = null;runExecutionListeners(true /* start */);//// Regular mode//else if (m_masterfileName == null) {suiteRunners = runSuitesLocally();}//// Master mode//  

initializeSuitesAndJarFile() 主要是设置 m_jatPath ,m_suites.。 在我们的例子中，没有suite，也未设置jar path , 所以两个都是0.
initializeConfiguration()

• Install the listeners found in ServiceLoader (or use the class
  loader for tests, if specified).
• Install the listeners found in the suites
• Install the method selectors ？？？
• Find if we have an object factory
  下面是设置一些其他的

m_configuration.setAnnotationFinder(new JDK15AnnotationFinder(getAnnotationTransformer()));
m_configuration.setHookable(m_hookable);
m_configuration.setConfigurable(m_configurable);
m_configuration.setObjectFactory(factory);

接下来是进入runseiteslocally, 我们知道之前返回的m_suite是空的，至少在initialsuiteandjar时候是空的。

 public List<ISuite> runSuitesLocally() {SuiteRunnerMap suiteRunnerMap = new SuiteRunnerMap();if (m_suites.size() > 0) {if (m_suites.get(0).getVerbose() >= 2) {Version.displayBanner();}

运行到这里，我发现这个m_suites并不为空，说明前面那个步骤必然是将test.class加入了testsuite中。我们发现，执行到 initializeCommandLineSuitesParams();这时候 suite就不为0了，可见suute的初始化在这个函数中做掉了。

private void initializeCommandLineSuites() {if (m_commandLineTestClasses != null || m_commandLineMethods != null) {if (null != m_commandLineMethods) {m_cmdlineSuites = createCommandLineSuitesForMethods(m_commandLineMethods);}else {m_cmdlineSuites = createCommandLineSuitesForClasses(m_commandLineTestClasses);}for (XmlSuite s : m_cmdlineSuites) {for (XmlTest t : s.getTests()) {t.setPreserveOrder(m_preserveOrder ? "true " : "false");}m_suites.add(s);if (m_groupByInstances != null) {s.setGroupByInstances(m_groupByInstances);}}}}

发现，m_commandLineTestClasses 就是 com.test.test2， 因此会仅需执行，这里我们的m_commandLineMethods 是为null的，
所以最终会调用，
m_cmdlineSuites = createCommandLineSuitesForClasses(m_commandLineTestClasses);
接着会被m_suites加入到list中。

有了suite之后，我们再回到runsuitelocally()
加下来就是创建线程去run这些worker.

public List<ISuite> runSuitesLocally() {SuiteRunnerMap suiteRunnerMap = new SuiteRunnerMap();if (m_suites.size() > 0) {if (m_suites.get(0).getVerbose() >= 2) {Version.displayBanner();}// First initialize the suite runners to ensure there are no configuration issues.// Create a map with XmlSuite as key and corresponding SuiteRunner as valuefor (XmlSuite xmlSuite : m_suites) {createSuiteRunners(suiteRunnerMap, xmlSuite);}//// Run suites//if (m_suiteThreadPoolSize == 1 && !m_randomizeSuites) {// Single threaded and not randomized: run the suites in orderfor (XmlSuite xmlSuite : m_suites) {runSuitesSequentially(xmlSuite, suiteRunnerMap, getVerbose(xmlSuite),getDefaultSuiteName());}} else {// Multithreaded: generate a dynamic graph that stores the suite hierarchy. This is then// used to run related suites in specific order. Parent suites are run only// once all the child suites have completed executionDynamicGraph<ISuite> suiteGraph = new DynamicGraph<ISuite>();for (XmlSuite xmlSuite : m_suites) {populateSuiteGraph(suiteGraph, suiteRunnerMap, xmlSuite);}IThreadWorkerFactory<ISuite> factory = new SuiteWorkerFactory(suiteRunnerMap,0 /* verbose hasn't been set yet */, getDefaultSuiteName());GraphThreadPoolExecutor<ISuite> pooledExecutor =new GraphThreadPoolExecutor<ISuite>(suiteGraph, factory, m_suiteThreadPoolSize,m_suiteThreadPoolSize, Integer.MAX_VALUE, TimeUnit.MILLISECONDS,new LinkedBlockingQueue<Runnable>());Utils.log("TestNG", 2, "Starting executor for all suites");// Run all suites in parallelpooledExecutor.run();try {pooledExecutor.awaitTermination(Long.MAX_VALUE, TimeUnit.MILLISECONDS);pooledExecutor.shutdownNow();}catch (InterruptedException handled) {Thread.currentThread().interrupt();error("Error waiting for concurrent executors to finish " + handled.getMessage());}}}e//// Generate the suites report//return Lists.newArrayList(suiteRunnerMap.values());}

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