java – 使用参数进行并发JUnit测试

所以我试图运行并行参数化测试.我有一个解决方案,其中相同的测试可以与提供的参数并行运行,例如说我有以下内容：

@Test
public void someTest1(){
}

@Test
public void someTest2(){
}

我可以让someTest1()同时运行所有参数,但someTest2()仍然必须等待someTest1()在执行之前完成所有参数.我想知道是否有人知道一个解决方案能够同时运行带有所有参数的someTest1()和带有所有参数的someTest2()？我试过tempus-fugit concurrent test runner,这对于没有参数化的测试非常有用……

下面是我目前并行运行每个参数测试的代码.

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;

import org.junit.runners.Parameterized;
import org.junit.runners.model.RunnerScheduler;

/**
 * Class used from the following source:
 * http://jankesterblog.blogspot.com/2011/10
 * /junit4-running-parallel-junit-classes.html
 * 
 * @author Jan Kester
 * 
 */
public class Parallelized extends Parameterized {

    private static class ThreadPoolScheduler implements RunnerScheduler {
        private ExecutorService executor;

        public ThreadPoolScheduler() {
            String threads = System.getProperty("junit.parallel.threads", "16");
            int numThreads = Integer.parseInt(threads);
            executor = Executors.newFixedThreadPool(numThreads);
        }

        public void finished() {
            executor.shutdown();
            try {
                executor.awaitTermination(12, TimeUnit.HOURS);
            } catch (InterruptedException exc) {
                throw new RuntimeException(exc);
            }
        }

        public void schedule(Runnable childStatement) {
            executor.submit(childStatement);
        }
    }

    /**
     * Instantiates a new parallelized.
     * 
     * @param klass
     *            the klass
     * @throws Throwable
     *             the throwable
     */
    public Parallelized(Class<?> klass) throws Throwable {
        super(klass);
        setScheduler(new ThreadPoolScheduler());
    }
}

下面的代码是一个示例测试,BaseSuite不包含任何重要的内容.这些与selenium一起使用,所以它只是设置webDriver. getAllButopera()方法返回包含Internet Explorer,Firefox和Chrome的浏览器类型集合.这些参数用于在firefox上同时运行相同的测试,即和chrome.我想同时在课堂上进行两个测试,这是我遇到的麻烦.

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;

import java.util.Collection;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized.Parameters;
import org.openqa.selenium.WebDriver;


/**
 * The Class SampleSuite1.
 * 
 * @author Reid McPherson
 */
@RunWith(Parallelized.class)
public class SampleSuite1 {
    WebDriver driver;
    /**
     * Data.
     * 
     * @return the collection
     */
    @Parameters
    public static Collection<Object[]> data(){
          List<Object[]> browsers = new ArrayList<Object[]>();
    browsers.add(new String[]{"Firefox"});
    browsers.add(new String[]{"Chrome"});
    browsers.add(new String[]{"IE"});
    return browsers;
    }

    /**
     * Instantiates a new sample suite1.
     * 
     * @param type
     *            the type
     */
    public SampleSuite1(String type){
        switch (type) {
    case "FIREFOX":
        driver = new FirefoxDriver();
        break;
    case "IE":
        driver = new InternetExplorerDriver();
        break;
    case "CHROME":
        System.setProperty("webdriver.chrome.driver", PATHtochROMEEXE);
        driver = new ChromeDriver();
        break;
    case "OPERA":
        driver = new OperaDriver();
        break;
    default:
        throw new RuntimeException("browser type unsupported");
    }
    // Set the timeout.
    driver.manage().timeouts().implicitlyWait(60, TimeUnit.SECONDS);
    }

    /**
     * Sets the up.
     */
    @Before
    public void setUp() {
        driver.get("http://www.google.com");
    }

    /**
     * Test navigation succeeded.
     */
    @Test
    @TestDescription("Navigation Test")
    public void navigationShouldSucceed() {
        String pageSource = driver.getPageSource();
        assertTrue(pageSource.contains("Google"));
    }

    /**
     * Test title.
     */
    @Test
    @TestDescription("This method tests the web page title.")
    public void titleShouldBeGoogle() {
        assertEquals(driver.getTitle(), "Google");
    }

    @After
    public void finished(){
    driver.close();
    }


}

解决方法:

正如我所说的那样,问题在于JUnit的实现.

你可以看到：

Parallelized extends Parametrized extends Suite extends ParentRunner

另一方面：

ConcurrentTestRunner extends BlockJUnit4ClassRunner extends ParentRunner

因此它们来自不同的继承层次.

现在您需要了解的是：

org.junit.runners.ParentRunner#getChildren

方法.对于org.junit.runners.BlockJUnit4ClassRunner,它是：

protected List<FrameworkMethod> computeTestMethods() {
    return getTestClass().getAnnotatedMethods(Test.class);
}

它生成带注释的所有方法.但是对于org.junit.runners.Parameterized它是：

for (int i= 0; i < parametersList.size(); i++)
  runners.add(newtestClassRunnerForParameters(getTestClass().getJavaClass(),
                parametersList, i));

而最后一个只提供课程.

Proposal：使用BlockJUnit4ClassRunner中的org.junit.runners.ParentRunner#getChildren定义覆盖您的Parallelized类.

java – 使用参数进行并发JUnit测试

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