java - TestNG在多线程环境下重试测试

Question

我一直在使用 TestNG 重试机制，如下 -

public class TestRetryAnalyzer implements IRetryAnalyzer {

public static final int MAX_RETRY_COUNT = 3;
private static final AtomicInteger count = new AtomicInteger(MAX_RETRY_COUNT);

public static void resetCount() {
    count.set(MAX_RETRY_COUNT);
}

public int getCount() {
    return count.get();
}

private boolean isRetryAvailable() {
    return (count.get() > 0);
}

@Override
public boolean retry(ITestResult result) {
    boolean retry = false;
    if (isRetryAvailable()) {
        System.out.println("Going to retry test case: " + result.getMethod() + ", " + (((MAX_RETRY_COUNT - count.get()) + 1)) + " out of " + MAX_RETRY_COUNT);
        retry = true;
        count.decrementAndGet();
    }
    return retry;
}

}

public class TestRetryListener implements IAnnotationTransformer {

@Override
public void transform(final ITestAnnotation annotation, final Class testClass, final Constructor testConstructor,
                      final Method testMethod) {
    IRetryAnalyzer retryAnalyzer = annotation.getRetryAnalyzer();
    if (retryAnalyzer == null) {
        annotation.setRetryAnalyzer(TestRetryAnalyzer.class);
    }
}

和测试 -

public class SimpleTest {

private int count = 0;

@Test
public void test() {
    count++;
    if (count % 3 != 0) {
        Assert.fail("Injected Failure");
    }
    count = 0;
}

和 testng.xml 文件 -

<suite name="Suite1" verbose="1">
<listeners>
    <listener class-name="main.java.TestRetryListener" />
    <listener class-name="org.uncommons.reportng.HTMLReporter" />
    <listener class-name="org.uncommons.reportng.JUnitXMLReporter" />
</listeners>
<test name="Sample" >
    <classes>
        <class name="main.java.SimpleTest" />
    </classes>
</test>
<test name="Sample2" >
    <classes>
        <class name="main.java.SimpleTest" />
    </classes>
</test>
<test name="Sample3" >
    <classes>
        <class name="main.java.SimpleTest" />
    </classes>
</test>
<test name="Sample4" >
    <classes>
        <class name="main.java.SimpleTest" />
    </classes>
</test>
<test name="Sample5" >
    <classes>
        <class name="main.java.SimpleTest" />
    </classes>
</test>

当我只运行一个测试时，重试机制运行良好(1 次通过，2 次跳过)。但是当我运行上面 testng.xml 文件中提到的 5 个测试时，它们开始失败。我是否会在没有并行运行测试的情况下遇到并发问题？我该如何摆脱它？

我正在使用 testNG 6.9.10

Answer 1

TestRetryListener 仅由 TestNG 框架调用一次，因此堆中仅存在一个 TestRetryAnalyzer 实例。 实例变量“count”(AtomicInteger 类的实例)在多个测试之间共享。 每次测试都不会将其重置为 3，这意味着 AtomicInteger 对象仅实例化一次，并且 TestRetryAnalyzer 类使用相同的引用。

为了克服上述问题，我们必须在每次测试后将计数重置为 3。为此，您必须进行以下更改

public class SimpleTest {

private int count = 0;

@Test
public void test() {
    count++;
    System.out.println("Test Count ... " + count);
    if (count % 4 != 0) {
        Assert.fail("Injected Failure");
    }
    count = 0;
}

@AfterTest
public void afterTest() {
    TestRetryAnalyzer.resetCount();
}

}

公共(public)类 TestRetryAnalyzer 实现 IRetryAnalyzer {

private static int MAX_RETRY_COUNT = 3;

private static AtomicInteger count = new AtomicInteger(MAX_RETRY_COUNT);

public static void resetCount() {
    count.set(MAX_RETRY_COUNT);
}

private boolean isRetryAvailable() {
    return (count.intValue() > 0);
}

@Override
public boolean retry(ITestResult result) {
    boolean retry = false;
    if (isRetryAvailable()) {
        retry = true;
        count.decrementAndGet();
        System.out.println("Retry Analyzer count is : " + count);
    }
    return retry;
}

}

希望这有帮助:)