return a view for dpnp.ndarray.real/imag

Author: vtavana

dpnp/dpnp_array.py

@@ -831,7 +831,9 @@ def imag(self):
         array([0.        , 0.70710677])
 
         """
-        return dpnp.imag(self)
+        return dpnp_array._create_from_usm_ndarray(
+            dpnp.get_usm_ndarray(self).imag
+        )
 
     @imag.setter
     def imag(self, value):
@@ -1042,7 +1044,9 @@ def real(self):
         array([1.        , 0.70710677])
 
         """
-        return dpnp.real(self)
+        return dpnp_array._create_from_usm_ndarray(
+            dpnp.get_usm_ndarray(self).real
+        )
 
     @real.setter
     def real(self, value):

tests/test_dparray.py

@@ -86,6 +86,23 @@ def test_flags_strides(dtype, order, strides):
     assert numpy_array.flags.f_contiguous == dpnp_array.flags.f_contiguous
 
 
+def test_flags_writable():
+    a = dpnp.arange(10, dtype="f4")
+    a.flags["W"] = False
+
+    a.shape = (5, 2)
+    assert not a.flags.writable
+    assert not a.T.flags.writable
+    assert not a.real.flags.writable
+    assert not a[0:3].flags.writable
+
+    a = dpnp.arange(10, dtype="c8")
+    a.flags["W"] = False
+
+    assert not a.real.flags.writable
+    assert not a.imag.flags.writable
+
+
 def test_print_dpnp_int():
     result = repr(dpnp.array([1, 0, 2, -3, -1, 2, 21, -9], dtype="i4"))
     expected = "array([ 1,  0,  2, -3, -1,  2, 21, -9], dtype=int32)"