Unit test describing index behavior bug

.prettierignore

@@ -9,3 +9,4 @@ ts-rs/
 rust/perspective-python/perspective/labextension/
 rust/perspective-python/perspective.data/
 rust/perspective-python/*/data
+venv/

rust/perspective-python/perspective/__init__.py

@@ -61,7 +61,7 @@ def from_server(
         server: Server,
         loop_callback=default_loop_cb,
     ):
-        """Create a new `Client` instance bound synchronously to an Python
+        """Create a new `Client` instance bound synchronously to a Python
         instance of `PerspectiveServer`."""
 
         def handle_request(bytes):

rust/perspective-python/perspective/tests/table/test_table.py

@@ -605,6 +605,24 @@ def test_float32_table_construction(self):
         assert tbl.size() == 2
         assert tbl.schema() == {"a": "float", "b": "float"}
 
+    def test_constructor_and_update_congruence(self):
+        input_data = [{"a": 0}, {"a": 1}, {"a": 2}, {"a": 3} ,{"a": None}]
+        # a table constructed with a schema then update()
+        # ends up different than a table with data given on construction
+        # in respect to how it interacts with `index`.
+        # This test shows that through using the `limit`
+
+        # will show [3,1,2]
+        t1 = Table(input_data, limit=3)
+        j1 = t1.view().to_json()
+        # as of right now, second row is 1
+        assert j1 == [{"a": 3}, {"a": None}, {"a": 2}]
+
+        t2 = Table({"a": "integer"}, limit=3)
+        t2.update(input_data)
+        j2 = t2.view().to_json()
+        assert j2 == [{"a": 3}, {"a": None}, {"a": 2}]
+
 
 if __name__ == "__main__":
     import pytest