Request headers of type integer

[glockenbach]

Using connexion==3.0.6, we have api specifications that declares header parameters of type integer. However, I have been unable to create a successful test, containing headers of type integer. There is an exception raised from httpx trying to make encoding on its value. In the source code, I can see that starlette implements the header type from httpx https://github.com/encode/httpx/blob/3faa4a8f2e0d406167b913bbfd3afab087662d03/httpx/_types.py#L57.

Is there any way to use the starlette.testclient.TestClient with integer header values?

Example:

     parameters:
        - name: API-Version
          in: header
          type: integer
          required: false

/usr/local/lib/python3.8/site-packages/starlette/testclient.py:549: in get
    return super().get(
/usr/local/lib/python3.8/site-packages/httpx/_client.py:1055: in get
    return self.request(
/usr/local/lib/python3.8/site-packages/starlette/testclient.py:517: in request
    return super().request(
/usr/local/lib/python3.8/site-packages/httpx/_client.py:815: in request
    request = self.build_request(
/usr/local/lib/python3.8/site-packages/httpx/_client.py:348: in build_request
    headers = self._merge_headers(headers)
/usr/local/lib/python3.8/site-packages/httpx/_client.py:415: in _merge_headers
    merged_headers.update(headers)
/usr/local/lib/python3.8/site-packages/httpx/_models.py:199: in update
    headers = Headers(headers)
/usr/local/lib/python3.8/site-packages/httpx/_models.py:70: in __init__
    self._list = [
/usr/local/lib/python3.8/site-packages/httpx/_models.py:74: in <listcomp>
    normalize_header_value(v, encoding),
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

value = 1, encoding = None

    def normalize_header_value(
        value: typing.Union[str, bytes], encoding: typing.Optional[str] = None
    ) -> bytes:
        """
        Coerce str/bytes into a strictly byte-wise HTTP header value.
        """
        if isinstance(value, bytes):
            return value
>       return value.encode(encoding or "ascii")
E       AttributeError: 'int' object has no attribute 'encode'

/usr/local/lib/python3.8/site-packages/httpx/_utils.py:53: AttributeError

[glockenbach]

It seems that headers are always of type string and hence a specification of value type integer is invalid.