In a multithreaded environment, when using giveMeOne, ConcurrentModificationException and JqwikException exceptions will occur.

[NinthCode]

Describe the bug

In a multithreaded environment, when using giveMeOne, ConcurrentModificationException and JqwikException exceptions will occur.

Your environment

• Fixture Monkey 1.0.21
• Java 17

Steps to reproduce

` @Test public void test() throws Exception { CountDownLatch latch = new CountDownLatch(100); CountDownLatch mLatch = new CountDownLatch(100); for (int i = 0; i < 100; i++) { final Integer ii = i; new Thread(() -> { try { latch.await(); FixtureMonkey fixtureMonkey = FixtureMonkey.builder().defaultNotNull(true).objectIntrospector(FieldReflectionArbitraryIntrospector.INSTANCE).build(); System.out.println(ii + JSON.toJSONString(fixtureMonkey.giveMeOne(tt.class))); } catch (Exception e) { e.printStackTrace(); } finally { mLatch.countDown(); } }).start(); latch.countDown(); } mLatch.await(); }

@Data
public static class tt {
    public String name;
}`

Expected behaviour

Running normally.

Actual behaviour

java.util.ConcurrentModificationException at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1221) at net.jqwik.engine.execution.lifecycle.StoreRepository.addStore(StoreRepository.java:56) at net.jqwik.engine.execution.lifecycle.StoreRepository.create(StoreRepository.java:51) at net.jqwik.engine.facades.StoreFacadeImpl.create(StoreFacadeImpl.java:19) at net.jqwik.api.lifecycle.Store.create(Store.java:67) and net.jqwik.api.JqwikException: You cannot create Store(net.jqwik.engine.facades.Memoize, PROPERTY, [jqwik:samples]): [null] with identifier [class net.jqwik.engine.facades.Memoize]. It conflicts with existing Optional[Store(net.jqwik.engine.facades.Memoize, PROPERTY, [jqwik:samples]): [{}]] at net.jqwik.engine.execution.lifecycle.StoreRepository.lambda$addStore$2(StoreRepository.java:72) at java.base/java.util.Optional.ifPresent(Optional.java:178) at net.jqwik.engine.execution.lifecycle.StoreRepository.addStore(StoreRepository.java:65) at net.jqwik.engine.execution.lifecycle.StoreRepository.create(StoreRepository.java:51) at net.jqwik.engine.facades.StoreFacadeImpl.create(StoreFacadeImpl.java:19)

[seongahjo]

@NinthCode Hello, it is fixed in 1.0.25.

Please check that the problem has been resolved. Let me know if there is another problem.

Thank you.

[NinthCode]

@NinthCode Hello, it is fixed in 1.0.25.

Please check that the problem has been resolved. Let me know if there is another problem.

Thank you.

@seongahjo Hello! Thank you for your fix. It seems that the problem has been solved.