e2e test ChannelChainTestHelper is broken due to change to strict-subscriber feature flag

[haubenr]

Describe the bug
Ever since the introduction of the PR #6473 the e2e test helper ChannelChainTestHelper in https://github.com/knative/eventing/blob/main/test/e2e/helpers/channel_chain_test_helper.go is broken. The mentioned PR changed the default setting for feature flag strict-subscriber to true which renders this part of the test code invalid:

eventing/test/e2e/helpers/channel_chain_test_helper.go

Line 67 in c884e27

client.CreateSubscriptionsOrFail(

The ChannelChainTestHelper is part of the eventing-kafka e2e test suite which fails constantly due to this issue: https://prow.knative.dev/?job=*continuous_eventing-kafka_main_periodic*

Expected behavior
All component e2e tests making use of the ChannelChainTestHelper test code should pass.

To Reproduce
See: https://prow.knative.dev/?job=*continuous_eventing-kafka_main_periodic*

Knative release version
main

Additional context
must-fix

[haubenr]

@pierDipi

[pierDipi]

The test is deprecated

eventing/test/e2e/helpers/channel_chain_test_helper.go

Line 35 in c884e27

// Deprecated, use reconciler-test based tests.

, so eventing-kafka should move to the new implementation.

[haubenr]

Well, deleting the test case from eventing-kafka should be a quick fix then?

[haubenr]

Addressed by knative-extensions/eventing-kafka#1229