Fixed gh-1272

dpnp/dpnp_iface_arraycreation.py

@@ -48,6 +48,7 @@
 from dpnp.dpnp_utils import *
 
 import dpnp.dpnp_container as dpnp_container
+import dpctl.tensor as dpt
 
 
 __all__ = [
@@ -530,7 +531,7 @@ def empty_like(x1,
 
     Limitations
     -----------
-    Parameters ``x1`` is supported only as :class:`dpnp.dpnp_array`.
+    Parameter ``x1`` is supported as :class:`dpnp.dpnp_array` or :class:`dpctl.tensor.usm_ndarray`
     Parameter ``order`` is supported with values ``"C"`` or ``"F"``.
     Parameter ``subok`` is supported only with default value ``False``.
     Otherwise the function will be executed sequentially on CPU.
@@ -552,7 +553,7 @@ def empty_like(x1,
 
     """
 
-    if not isinstance(x1, dpnp.ndarray):
+    if not isinstance(x1, (dpnp.ndarray, dpt.usm_ndarray)):
         pass
     elif order not in ('C', 'c', 'F', 'f', None):
         pass
@@ -762,7 +763,7 @@ def full_like(x1,
 
     Limitations
     -----------
-    Parameters ``x1`` is supported only as :class:`dpnp.dpnp_array`.
+    Parameter ``x1`` is supported as :class:`dpnp.dpnp_array` or :class:`dpctl.tensor.usm_ndarray`
     Parameter ``order`` is supported only with values ``"C"`` and ``"F"``.
     Parameter ``subok`` is supported only with default value ``False``.
     Otherwise the function will be executed sequentially on CPU.
@@ -783,7 +784,7 @@ def full_like(x1,
     [1.0, 1.0, 1.0, 1.0, 1.0, 1.0]
 
     """
-    if not isinstance(x1, dpnp.ndarray):
+    if not isinstance(x1, (dpnp.ndarray, dpt.usm_ndarray)):
         pass
     elif order not in ('C', 'c', 'F', 'f', None):
         pass
@@ -1189,7 +1190,7 @@ def ones_like(x1,
 
     Limitations
     -----------
-    Parameters ``x1`` is supported only as :class:`dpnp.dpnp_array`.
+    Parameter ``x1`` is supported as :class:`dpnp.dpnp_array` or :class:`dpctl.tensor.usm_ndarray`
     Parameter ``order`` is supported with values ``"C"`` or ``"F"``.
     Parameter ``subok`` is supported only with default value ``False``.
     Otherwise the function will be executed sequentially on CPU.
@@ -1211,7 +1212,7 @@ def ones_like(x1,
     [1.0, 1.0, 1.0, 1.0, 1.0, 1.0]
 
     """
-    if not isinstance(x1, dpnp.ndarray):
+    if not isinstance(x1, (dpnp.ndarray, dpt.usm_ndarray)):
         pass
     elif order not in ('C', 'c', 'F', 'f', None):
         pass
@@ -1502,7 +1503,7 @@ def zeros_like(x1,
 
     Limitations
     -----------
-    Parameters ``x1`` is supported only as :class:`dpnp.dpnp_array`.
+    Parameter ``x1`` is supported as :class:`dpnp.dpnp_array` or :class:`dpctl.tensor.usm_ndarray`
     Parameter ``order`` is supported with values ``"C"`` or ``"F"``.
     Parameter ``subok`` is supported only with default value ``False``.
     Otherwise the function will be executed sequentially on CPU.
@@ -1523,8 +1524,8 @@ def zeros_like(x1,
     >>> [i for i in np.zeros_like(x)]
     [0.0, 0.0, 0.0, 0.0, 0.0, 0.0]
 
-"""
-    if not isinstance(x1, dpnp.ndarray):
+    """
+    if not isinstance(x1, (dpnp.ndarray, dpt.usm_ndarray)):
         pass
     elif order not in ('C', 'c', 'F', 'f', None):
         pass

tests/test_arraycreation.py

@@ -485,3 +485,26 @@ def test_ones_like(array, dtype, order):
     a = numpy.array(array)
     ia = dpnp.array(array)
     assert_array_equal(func(numpy, a), func(dpnp, ia))
+
+
+@pytest.mark.parametrize(
+    "func, args",
+    [
+        pytest.param("full_like",
+                     ['x0', '4']),
+        pytest.param("zeros_like",
+                     ['x0']),
+        pytest.param("ones_like",
+                     ['x0']),
+        pytest.param("empty_like",
+                     ['x0']),
+    ])
+def test_dpctl_tensor_input(func, args):
+    x0 = dpt.reshape(dpt.arange(9), (3,3))
+    new_args = [eval(val, {'x0' : x0}) for val in args]
+    X = getattr(dpt, func)(*new_args)
+    Y = getattr(dpnp, func)(*new_args)
+    if func is 'empty_like':
+        assert X.shape == Y.shape
+    else:
+        assert_array_equal(X, Y)