to_device array method impl (#1143)

* to_device array method impl

Author: Alexander-Makaryev

dpnp/dpnp_array.py

@@ -97,6 +97,13 @@ def T(self):
         else:
             return dpnp.transpose(self)
 
+    def to_device(self, target_device):
+        """
+        Transfer array to target device
+        """
+
+        return dpnp_array(shape=self.shape, buffer=self.get_array().to_device(target_device))
+
     def __abs__(self):
         return dpnp.abs(self)
 

tests/test_sycl_queue.py

@@ -83,3 +83,18 @@ def test_2in_1out(func, device):
 
     assert_sycl_queue_equal(result_queue, expected_queue)
     assert result_queue.sycl_device == expected_queue.sycl_device
+
+
+@pytest.mark.parametrize("device_from",
+                         valid_devices,
+                         ids=[device.filter_string for device in valid_devices])
+@pytest.mark.parametrize("device_to",
+                         valid_devices,
+                         ids=[device.filter_string for device in valid_devices])
+def test_to_device(device_from, device_to):
+    data = [1., 1., 1., 1., 1.]
+
+    x = dpnp.array(data, device=device_from)
+    y = x.to_device(device_to)
+
+    assert y.get_array().sycl_device == device_to