test middleware forward correlation_id to storage and search

tests/unit/middleware/client_test.py

+import pytest
+from pytest_httpx import HTTPXMock
+from app.clients import make_storage_record_client, make_search_client
+from app.utils import Context, get_or_create_ctx
+
+from tests.unit.test_utils import ctx_fixture, nope_logger_fixture
+
+@pytest.mark.asyncio
+async def test_fwd_correlation_id_to_outgoing_request_to_storage(ctx_fixture, httpx_mock: HTTPXMock):
+    storage_url = "http://example.com"  # well formed url required
+    expected_correlation_id = 'some-correlation-id'
+
+    storage_client = make_storage_record_client(storage_url)
+    httpx_mock.add_response(match_headers={'correlation-id': expected_correlation_id})
+
+    ctx = ctx_fixture.with_correlation_id(expected_correlation_id).with_auth("foobar")
+    Context.set_current(ctx)
+
+    # force to use endpoint which does not return a response to skip model validation
+    response = await storage_client.delete_record(id="123", data_partition_id="test")
+    assert response is not None
+
+
+@pytest.mark.asyncio
+async def test_fwd_correlation_id_to_outgoing_request_to_search(httpx_mock: HTTPXMock):
+    storage_url = "http://example.com"  # well formed url required
+    expected_correlation_id = 'some-correlation-id'
+
+    search_client = make_search_client(storage_url)
+    httpx_mock.add_response(match_headers={'correlation-id': expected_correlation_id})
+
+    ctx = get_or_create_ctx().with_correlation_id(expected_correlation_id).with_auth("foobar")
+    Context.set_current(ctx)
+
+    # force to use endpoint which does not return a response to skip model validation
+    response = await search_client.delete_index(kind="kind", data_partition_id="test")
+    assert response is not None