Merge pull request #2122 from IntelPython/resolve-gh-2121

Fix for gh-2121

Author: ndgrigorian

dpctl/tensor/_copy_utils.py

@@ -742,6 +742,9 @@ def astype(
             order=copy_order,
             buffer_ctor_kwargs={"queue": usm_ary.sycl_queue},
         )
+    # see #2121
+    if ary_dtype == dpt.bool:
+        usm_ary = dpt.not_equal(usm_ary, 0, order=copy_order)
     _copy_from_usm_ndarray_to_usm_ndarray(R, usm_ary)
     return R
 

dpctl/tests/test_usm_ndarray_ctor.py

@@ -1541,6 +1541,16 @@ def test_astype_gh_1926():
     assert x is x__
 
 
+def test_astype_gh_2121():
+    get_queue_or_skip()
+
+    x_np = np.asarray([0, 3, 1, 2, 0, 1], dtype="u1").view("?")
+    x = dpt.asarray(x_np)
+    res = dpt.astype(x, dpt.uint8)
+    expected = dpt.asarray([0, 1, 1, 1, 0, 1], dtype="u1")
+    assert dpt.all(res == expected)
+
+
 def test_copy():
     try:
         X = dpt.usm_ndarray((5, 5), "i4")[2:4, 1:4]