Multiple iterable beans not resulting in `NonUniqueBeanException` on `getBean`

[dstepanov]

Expected Behavior

Expecting thrown NonUniqueBeanException.

Actual Behaviour

Looks like in DefaultApplicationContext there is some logic that is selecting the first one:

@Override
    protected <T> BeanDefinition<T> findConcreteCandidate(Class<T> beanType, Qualifier<T> qualifier, Collection<BeanDefinition<T>> candidates) {
        if (!(qualifier instanceof Named)) {
            return super.findConcreteCandidate(beanType, qualifier, candidates);
        }
        for (BeanDefinition<T> candidate : candidates) {
            if (!candidate.isIterable()) {
                return super.findConcreteCandidate(beanType, qualifier, candidates);
            }
        }
        for (BeanDefinition<T> candidate : candidates) {
            if (candidate instanceof BeanDefinitionDelegate) {
                Qualifier<T> delegateQualifier = candidate.resolveDynamicQualifier();
                if (delegateQualifier != null && delegateQualifier.equals(qualifier)) {
                    return candidate; // ???
                }
            }
        }
        return super.findConcreteCandidate(beanType, qualifier, candidates);
    }

I think the correct way is to filter them, not returning the first that is matching.

Steps To Reproduce

No response

Environment Information

No response

Example Application

No response

Version

3.6