One more test added, to cover different dtypes copy with strides

Author: oleksandr-pavlyk

dpctl/tensor/_copy_utils.py

@@ -194,9 +194,6 @@ def copy_same_shape(dst, src):
     sh_i, dst_st, dst_disp, src_st, src_disp = contract_iter2(
         dst.shape, dst.strides, src.strides
     )
-    # sh_i, dst_st, dst_disp, src_st, src_disp = (
-    #    dst.shape, dst.strides, 0, src.strides, 0
-    # )
     src_iface = src.__sycl_usm_array_interface__
     dst_iface = dst.__sycl_usm_array_interface__
     src_iface["shape"] = tuple()

dpctl/tests/test_usm_ndarray_ctor.py

@@ -676,6 +676,15 @@ def test_setitem_errors():
     X[:] = Y[None, :, 0]
 
 
+def test_setitem_different_dtypes():
+    X = dpt.from_numpy(np.ones(10, "f4"))
+    Y = dpt.from_numpy(np.zeros(10, "f4"))
+    Z = dpt.usm_ndarray((20,), "d")
+    Z[::2] = X
+    Z[1::2] = Y
+    assert np.allclose(dpt.asnumpy(Z), np.tile(np.array([1, 0], "d"), 10))
+
+
 def test_shape_setter():
     def cc_strides(sh):
         return np.empty(sh, dtype="u1").strides