🐞: allure-spock2 tests uuid conflicts during parallel tests execution

[n1kolass]

What happened?

There is an issue with allure-results reporting during parallel tests execution using Spock framework:

// File SpockConfig.groovy
runner {
    parallel {
        enabled true
        dynamicWithReservedProcessors(1.0, 0)
    }
}

I am not 100% sure how to reproduce the issue, but with a large number of tests and with run in parallel, there is an issue, when allure-spock2 extension AllureSpock2 reuses ThreadLocal<String> testResults with already defined initial UUID. It leads to the tests being registered with a non-unique UUID.
The symptoms are:

2025-10-15 14:17:09,189 [ERROR] [ForkJoinPool-1-worker-9] [] - io.qameta.allure.AllureLifecycle.updateTestCase - Could not update test case: test case with uuid 4a4716fb-ada4-40ab-91a7-9fd615c19401 not found
2025-10-15 14:17:09,189 [ERROR] [ForkJoinPool-1-worker-9] [] - io.qameta.allure.AllureLifecycle.stopTestCase - Could not stop test case: test case with uuid 4a4716fb-ada4-40ab-91a7-9fd615c19401 not found
2025-10-15 14:17:09,189 [ERROR] [ForkJoinPool-1-worker-9] [] - io.qameta.allure.AllureLifecycle.writeTestCase - Could not write test case: test case with uuid 4a4716fb-ada4-40ab-91a7-9fd615c19401 not found

And there are fewer tests in the Allure report than were actually run.

I've prepared the fix, but I do not have permissions to push into the repo.

Please, take a look at the fix below, and if you find it suitable - apply the fix.

// allure-spock2/src/main/java/io/qameta/allure/spock2/AllureSpock2.java 
// instead of
private final ThreadLocal<String> testResults = new InheritableThreadLocal<String>() {
    @Override
    protected String initialValue() {
        return UUID.randomUUID().toString();
    }
};
// use
private final ThreadLocal<String> testResults = new ThreadLocal<>();

// in beforeIteration
@Override
public void beforeIteration(final IterationInfo iteration) {
    final String uuid = UUID.randomUUID().toString();
    testResults.set(uuid);
    // ...
}

// in afterIteration
@Override
public void afterIteration(final IterationInfo iteration) {
    final String uuid = testResults.get();

    if (uuid == null) {
        return;
    }

    try {
        getLifecycle().updateTestCase(uuid, testResult -> {
            if (Objects.isNull(testResult.getStatus())) {
                testResult.setStatus(Status.PASSED);
            }
        });
        getLifecycle().stopTestCase(uuid);
        getLifecycle().writeTestCase(uuid);
    } finally {
        testResults.remove();
    }
}

What Allure Integration are you using?

allure-spock2

What version of Allure Integration you are using?

2.30.0

What version of Allure Report you are using?

2.12.0

Code of Conduct

• I agree to follow this project's Code of Conduct