diff --git a/pinecone/data/features/bulk_import.py b/pinecone/data/features/bulk_import.py
index 43d9b079..3c4a8ac0 100644
--- a/pinecone/data/features/bulk_import.py
+++ b/pinecone/data/features/bulk_import.py
@@ -37,14 +37,17 @@ def __init__(self, **kwargs):
         )
         openapi_config = ConfigBuilder.build_openapi_config(config, kwargs.get("openapi_config", None))
 
-        self.__import_operations_api = setup_openapi_client(
-            api_client_klass=ApiClient,
-            api_klass=BulkOperationsApi,
-            config=config,
-            openapi_config=openapi_config,
-            pool_threads=kwargs.get("pool_threads", 1),
-            api_version=API_VERSION,
-        )
+        if kwargs.get("__import_operations_api", None):
+            self.__import_operations_api = kwargs.get("__import_operations_api")
+        else:
+            self.__import_operations_api = setup_openapi_client(
+                api_client_klass=ApiClient,
+                api_klass=BulkOperationsApi,
+                config=config,
+                openapi_config=openapi_config,
+                pool_threads=kwargs.get("pool_threads", 1),
+                api_version=API_VERSION,
+            )
 
     @prerelease_feature
     def start_import(self, uri: str, integration: Optional[str] = None) -> StartImportResponse:
diff --git a/tests/unit/data/test_bulk_import.py b/tests/unit/data/test_bulk_import.py
new file mode 100644
index 00000000..81c95e5f
--- /dev/null
+++ b/tests/unit/data/test_bulk_import.py
@@ -0,0 +1,88 @@
+import pytest
+import warnings
+
+from urllib3 import BaseHTTPResponse, HTTPResponse
+
+from datetime import datetime, date
+
+from pinecone.core_ea.openapi.db_data.api.bulk_operations_api import BulkOperationsApi
+from pinecone.core_ea.openapi.db_data.models import ImportModel, StartImportResponse
+from pinecone.core_ea.openapi.shared.api_client import ApiClient
+from pinecone.core_ea.openapi.shared.exceptions import PineconeApiException
+
+from pinecone.data.features.bulk_import import ImportFeatureMixin
+
+
+def build_api_w_faked_response(mocker, body: str, status: int = 200) -> BaseHTTPResponse:
+    response = mocker.Mock()
+    response.headers = {"content-type": "application/json"}
+    response.status = status
+    response.data = body.encode("utf-8")
+
+    api_client = ApiClient()
+    mocker.patch.object(api_client.rest_client.pool_manager, "request", return_value=response)
+    return BulkOperationsApi(api_client=api_client)
+
+
+def build_client_w_faked_response(mocker, body: str, status: int = 200):
+    api_client = build_api_w_faked_response(mocker, body, status)
+    return ImportFeatureMixin(__import_operations_api=api_client, api_key="asdf", host="asdf")
+
+
+class TestBulkImportStartImport:
+    def test_start_import(self, mocker):
+        body = """
+        {
+            "id": "1"
+        }
+        """
+        client = build_client_w_faked_response(mocker, body)
+
+        with pytest.warns(UserWarning, match="prerelease"):
+            my_import = client.start_import("s3://path/to/file.parquet")
+            assert my_import.id == "1"
+            assert my_import["id"] == "1"
+            assert my_import.to_dict() == {"id": "1"}
+            assert my_import.__class__ == StartImportResponse
+
+    def test_start_import_with_kwargs(self, mocker):
+        body = """
+        {
+            "id": "1"
+        }
+        """
+        client = build_client_w_faked_response(mocker, body)
+
+        with pytest.warns(UserWarning, match="prerelease"):
+            my_import = client.start_import(uri="s3://path/to/file.parquet")
+            assert my_import.id == "1"
+            assert my_import["id"] == "1"
+            assert my_import.to_dict() == {"id": "1"}
+            assert my_import.__class__ == StartImportResponse
+
+    def test_start_invalid_uri(self, mocker):
+        body = """
+        {
+            "code": "3",
+            "message": "Bulk import URIs must start with the scheme of a supported storage provider",
+            "details": []
+        }
+        """
+        client = build_client_w_faked_response(mocker, body, 400)
+
+        with pytest.warns(UserWarning, match="prerelease"):
+            with pytest.raises(PineconeApiException) as e:
+                my_import = client.start_import(uri="invalid path")
+
+        assert e.value.status == 400
+        assert e.value.body == body
+        assert "Bulk import URIs must start with the scheme of a supported storage provider" in str(e.value)
+
+    def test_no_arguments(self, mocker):
+        client = build_client_w_faked_response(mocker, "")
+
+        with pytest.warns(UserWarning, match="prerelease"):
+            with pytest.raises(TypeError) as e:
+                my_import = client.start_import()
+
+        assert "missing 1 required positional argument" in str(e.value)
diff --git a/tests/unit/data/test_import_datetime_parsing.py b/tests/unit/data/test_import_datetime_parsing.py
index aeddf121..cf6213f9 100644
--- a/tests/unit/data/test_import_datetime_parsing.py
+++ b/tests/unit/data/test_import_datetime_parsing.py
@@ -9,20 +9,21 @@
 from pinecone.core_ea.openapi.shared.api_client import ApiClient, Endpoint as _Endpoint
 from pinecone.core_ea.openapi.shared.rest import RESTResponse
 
+
 def fake_response(mocker, body: str, status: int = 200) -> BaseHTTPResponse:
     resp = HTTPResponse(
-        body=body.encode('utf-8'),
-        headers={'content-type': 'application/json'},
+        body=body.encode("utf-8"),
+        headers={"content-type": "application/json"},
         status=status,
         reason="OK",
-        preload_content=True
+        preload_content=True,
     )
     api_client = ApiClient()
-    mocker.patch.object(api_client, 'request', return_value=RESTResponse(resp))
+    mocker.patch.object(api_client, "request", return_value=RESTResponse(resp))
     return api_client
 
 
-class TestBulkImport():
+class TestBulkImport:
     def test_parsing_datetime_fields(self, mocker):
         body = """
         {
@@ -36,10 +37,9 @@ def test_parsing_datetime_fields(self, mocker):
         """
         api_client = fake_response(mocker, body, 200)
         api = BulkOperationsApi(api_client=api_client)
-        
-        r = api.describe_import(id='1')
+
+        r = api.describe_import(id="1")
         assert r.created_at.year == 2024
         assert r.created_at.month == 8
         assert r.created_at.date() == date(year=2024, month=8, day=27)
         assert r.created_at.time() == datetime.strptime("17:10:32.206413", "%H:%M:%S.%f").time()
-        
\ No newline at end of file