Minor release testing updates

tes/client.py

@@ -93,10 +93,14 @@ def send_request(
     return response
 
 
+def process_url(value):
+    return re.sub("[/]+$", "", value)
+
+
 @attrs
 class HTTPClient(object):
     """HTTP client class for interacting with the TES API."""
-    url: str = attrib(converter=process_url)
+    url: str = attrib(converter=process_url, validator=instance_of(str))
     timeout: int = attrib(default=10, validator=instance_of(int))
     user: Optional[str] = attrib(
         default=None, converter=strconv, validator=optional(instance_of(str)))

tes/models.py

@@ -18,8 +18,6 @@ class _ListOfValidator(object):
 
     type: Type = attrib()
 
-    def __call__(self, inst, attr, value):
-        """We use a callable class to be able to change the ``__repr__``."""
     def __call__(self, inst, attr, value) -> None:
         """We use a callable class to be able to change the ``__repr__``."""
         if not all([isinstance(n, self.type) for n in value]):

tests/test_client.py

@@ -24,7 +24,7 @@ class TestHTTPClient(unittest.TestCase):
 
     def test_cli(self):
         cli = HTTPClient(url="http://fakehost:8000//", timeout=5)
-        self.assertEqual(cli.url, "http://fakehost:8000//")
+        self.assertEqual(cli.url, "http://fakehost:8000")
         self.assertEqual(cli.urls, [
             "http://fakehost:8000/ga4gh/tes/v1",
             "http://fakehost:8000/v1",