Strictly forbid the use of chunks and blocks keys in cparams dict

Author: FrancescAlted

blosc2/ndarray.py

@@ -658,3 +658,7 @@ def _check_ndarray_kwargs(**kwargs):
                 f" keyword arguments"
                 f", and you passed {str(key)}"
             )
+    if "cparams" in kwargs and "chunks" in kwargs["cparams"]:
+        raise ValueError("You cannot pass chunks in cparams, use `chunks` argument instead")
+    if "cparams" in kwargs and "blocks" in kwargs["cparams"]:
+        raise ValueError("You cannot pass chunks in cparams, use `blocks` argument instead")

tests/ndarray/test_empty.py

@@ -110,3 +110,16 @@ def test_empty_minimal(shape, dtype):
     assert all(c >= b for c, b in zip(a.chunks, a.blocks))
     assert a.dtype == dtype
     assert a.schunk.typesize == dtype.itemsize
+
+
+@pytest.mark.parametrize(
+    "shape, cparams",
+    [
+        (100, dict(chunks=(10,))),
+        ((100,), dict(blocks=(10,))),
+        ((100,), dict(chunks=(10,), blocks=(10,))),
+    ],
+)
+def test_cparams_chunks_blocks(shape, cparams):
+    with pytest.raises(ValueError):
+        blosc2.empty(shape, cparams=cparams)