chore: remove unreachable code (#997)

google/cloud/sql/connector/refresh_utils.py

@@ -79,13 +79,6 @@ async def _get_metadata(
     :raises TypeError: If any of the arguments are not the specified type.
     """
 
-    if not isinstance(project, str):
-        raise TypeError(f"project must be of type str, got {type(project)}")
-    if not isinstance(region, str):
-        raise TypeError(f"region must be of type str, got {type(region)}")
-    if not isinstance(instance, str):
-        raise TypeError(f"instance must be of type str, got {type(instance)}")
-
     if not credentials.valid:
         request = google.auth.transport.requests.Request()
         credentials.refresh(request)
@@ -167,10 +160,6 @@ async def _get_ephemeral(
 
     logger.debug(f"['{instance}']: Requesting ephemeral certificate")
 
-    if not isinstance(project, str):
-        raise TypeError(f"project must be of type str, got {type(project)}")
-    if not isinstance(instance, str):
-        raise TypeError(f"instance must be of type str, got {type(instance)}")
     if not isinstance(pub_key, str):
         raise TypeError(f"pub_key must be of type str, got {type(pub_key)}")
 

tests/unit/mocks.py

@@ -278,10 +278,6 @@ def generate_ephemeral(self, client_bytes: str) -> str:
             client_bytes.encode("UTF-8"), default_backend()
         )  # type: ignore
         ephemeral_cert = client_key_signed_cert(self.cert, self.key, client_key)
-        print(
-            "Test generate time: ",
-            datetime.datetime.utcnow() + datetime.timedelta(minutes=10),
-        )
         return json.dumps(
             {
                 "ephemeralCert": {

tests/unit/test_refresh_utils.py

@@ -93,38 +93,14 @@ async def test_get_ephemeral_TypeError(credentials: Credentials) -> None:
     when given incorrect input arg types.
     """
     client_session = Mock(aiohttp.ClientSession)
-    project = "my-project"
-    instance = "my-instance"
-    pub_key = "key"
-
-    # incorrect project type
-    with pytest.raises(TypeError):
-        await _get_ephemeral(
-            client_session=client_session,
-            sqladmin_api_endpoint="https://sqladmin.googleapis.com",
-            credentials=credentials,
-            project=12345,
-            instance=instance,
-            pub_key=pub_key,
-        )
-    # incorrect instance type
-    with pytest.raises(TypeError):
-        await _get_ephemeral(
-            client_session=client_session,
-            sqladmin_api_endpoint="https://sqladmin.googleapis.com",
-            credentials=credentials,
-            project=project,
-            instance=12345,
-            pub_key=pub_key,
-        )
     # incorrect pub_key type
     with pytest.raises(TypeError):
         await _get_ephemeral(
             client_session=client_session,
             sqladmin_api_endpoint="https://sqladmin.googleapis.com",
             credentials=credentials,
-            project=project,
-            instance=instance,
+            project="my-project",
+            instance="my-instance",
             pub_key=12345,
         )
 
@@ -166,50 +142,6 @@ async def test_get_metadata(
     )
 
 
-@pytest.mark.asyncio
-@no_type_check
-async def test_get_metadata_TypeError(credentials: Credentials) -> None:
-    """
-    Test to check whether _get_metadata throws proper TypeError
-    when given incorrect input arg types.
-    """
-    client_session = Mock(aiohttp.ClientSession)
-    project = "my-project"
-    region = "my-region"
-    instance = "my-instance"
-
-    # incorrect project type
-    with pytest.raises(TypeError):
-        await _get_metadata(
-            client_session=client_session,
-            sqladmin_api_endpoint="https://sqladmin.googleapis.com",
-            credentials=credentials,
-            project=12345,
-            region=region,
-            instance=instance,
-        )
-    # incorrect region type
-    with pytest.raises(TypeError):
-        await _get_metadata(
-            client_session=client_session,
-            sqladmin_api_endpoint="https://sqladmin.googleapis.com",
-            credentials=credentials,
-            project=project,
-            region=1,
-            instance=instance,
-        )
-    # incorrect instance type
-    with pytest.raises(TypeError):
-        await _get_metadata(
-            client_session=client_session,
-            sqladmin_api_endpoint="https://sqladmin.googleapis.com",
-            credentials=credentials,
-            project=project,
-            region=region,
-            instance=12345,
-        )
-
-
 @pytest.mark.asyncio
 @no_type_check
 async def test_get_metadata_region_mismatch(