assert not override4 or "x-level4" in response.headers
    assert not override5 or "x-level5" in response.headers


def test_openapi():
    client = TestClient(app)
    with warnings.catch_warnings(record=True) as w:
        warnings.simplefilter("always")
        response = client.get("/openapi.json")
        assert issubclass(w[-1].category, UserWarning)
        assert "Duplicate Operation ID" in str(w[-1].message)

## Changes by Kind

### Deprecation

- Added a [warning](https://k8s.io/blog/2020/09/03/warnings/) response when handling requests that set the deprecated `spec.externalID` field for a Node. ([#115944](https://github.com/kubernetes/kubernetes/pull/115944), [@SataQiu](https://github.com/SataQiu)) [SIG Node]
- Added warnings to the Services API. Kubernetes now warns for Services in the case of:

reliable across all browsers and versions. Non RFC2822/ISO date formats are discouraged. Please refer to http://momentjs.com/guides/#/warnings/js-date/ for more info.",function(e){e._d=new Date(e._i+(e._useUTC?" UTC":""))}),M.ISO_8601=function(){},M.RFC_2822=function(){};var ja=t("moment().min is deprecated, use moment.max instead. http://momentjs.com/guides/#/warnings/min-max/",function(){var e=Ha.apply(null,arguments);return this.isValid()&&e.isValid()?e<this?this:e:y()}),xa=t("moment().max is deprecated,...

- Graduated the `LegacyServiceAccountTokenTracking` feature gate to GA. The usage of auto-generated secret-based service account token now produces warnings, and relevant Secrets are labeled with a last-used timestamp (label key `kubernetes.io/legacy-token-last-used`). ([#117591](https://github.com/kubernetes/kubernetes/pull/117591), [@zshihang](https://github.com/zshihang)) [SIG API Machinery, Auth...

- Kubeadm: improve the strict parsing of user YAML/JSON configuration files. Next to printing warnings for unknown and duplicate fields (current state), also print warnings for fields with incorrect case sensitivity - e.g. `controlPlaneEndpoint` (valid), `ControlPlaneEndpoint` (invalid). Instead of only printing warnings during `init` and `join` also print warnings when downloading the ClusterConfiguration, KubeletConfiguration or KubeProxyConfiguration objects from the cluster....

- Validation rules for Custom Resource Definitions can be written in the [CEL expression language](https://gith...

- Kubeadm: perform pre-flight validation on host/node name upon `kubeadm init` and `kubeadm join`, showing warnings on non-compliant names ([#99194](https://github.com/kubernetes/kubernetes/pull/99194), [@pacoxu](https://github.com/pacoxu))

  - The `--experimental-encryption-provider-config` flag is deprecated in favor of `--encryption-provider-config`. The old flag is accepted with a warning but will be removed in 1.14. ([#71206](https://github.com/kubernetes/kubernetes/pull/71206),...

- Kubelet: remove alpha warnings for CNI flags. ([#94508](https://github.com/kubernetes/kubernetes/pull/94508), [@andrewsykim](https://github.com/andrewsykim)) [SIG Network and Node]
- Updates docs and guidance on cloud provider InstancesV2 and Zones interface for external cloud providers:
  - removes experimental warning for InstancesV2

* Added e2e test for watch ([#60331](https://github.com/kubernetes/kubernetes/pull/60331), [@jennybuckley](https://github.com/jennybuckley))
* add warnings on using pod-infra-container-image for remote container runtime ([#62982](https://github.com/kubernetes/kubernetes/pull/62982), [@dixudx](https://github.com/dixudx))