diff --git a/coriolisclient/tests/test_client.py b/coriolisclient/tests/test_client.py
new file mode 100644
index 0000000..f4fdf41
--- /dev/null
+++ b/coriolisclient/tests/test_client.py
@@ -0,0 +1,40 @@
+# Copyright 2024 Cloudbase Solutions Srl
+# All Rights Reserved.
+
+from unittest import mock
+
+from coriolisclient import client as coriolis_client
+from coriolisclient.tests import test_base
+
+
+class _HTTPClientTestCase(test_base.CoriolisBaseTestCase):
+    """Test suite for the Coriolis HTTP Client."""
+
+    def test__init__(self):
+        session = mock.Mock()
+        self.client = coriolis_client._HTTPClient(
+            session, endpoint=mock.sentinel.endpoint, version='v0')
+        self.assertEqual(
+            "%s/%s" % (mock.sentinel.endpoint, 'v0'),
+            self.client.endpoint_override
+        )
+
+    def test__init__no_endpoint(self):
+        session = mock.Mock()
+        self.client = coriolis_client._HTTPClient(session)
+        self.assertEqual(
+            None,
+            self.client.endpoint_override
+        )
+
+
+class ClientTestCase(test_base.CoriolisBaseTestCase):
+    """Test suite for the Coriolis Client."""
+
+    @mock.patch.object(coriolis_client, "_HTTPClient")
+    def test__init__(self, mock_HTTPClient):
+        try:
+            self.client = coriolis_client.Client(session=mock.sentinel.session)
+        except Exception:
+            self.fail("Failed to initialize Client")
+        mock_HTTPClient.assert_called_once_with(session=mock.sentinel.session)