Reject patch if data type does not match.

Author: danielballan

tiled/_tests/test_writing.py

@@ -169,6 +169,9 @@ def test_extend_array(tree):
         ac.patch(ones * 8, offset=8, extend=True)
         numpy.testing.assert_equal(ac[8:9], ones * 8)
 
+        with fail_with_status_code(HTTP_409_CONFLICT):
+            ac.patch(ones.astype("uint8"), offset=9, extend=True)
+
 
 def test_write_dataframe_full(tree):
     with Context.from_app(

tiled/adapters/zarr.py

@@ -206,6 +206,11 @@ async def patch(
             If slice does not fit wholly with the shape of the existing array
             and expand is False
         """
+        if data.dtype != self._array.dtype:
+            raise Conflicts(
+                f"Patch data type {data.dtype} does not match array data type "
+                f"{self._array.dtype}."
+            )
         current_shape = self._array.shape
         normalized_offset = [0] * len(current_shape)
         normalized_offset[: len(offset)] = list(offset)