Update tests for dpnp.to_device

Author: antonwolfy

dpnp/tests/test_sycl_queue.py

@@ -1949,12 +1949,14 @@ def test_basic(self, device_from, device_to):
 
         y = x.to_device(device_to)
         assert y.sycl_device == device_to
+        assert (x.asnumpy() == y.asnumpy()).all()
 
     def test_to_queue(self):
         x = dpnp.full(100, 2, dtype=dpnp.int64)
         q_prof = dpctl.SyclQueue(x.sycl_device, property="enable_profiling")
 
         y = x.to_device(q_prof)
+        assert (x.asnumpy() == y.asnumpy()).all()
         assert_sycl_queue_equal(y.sycl_queue, q_prof)
 
     def test_stream(self):
@@ -1963,21 +1965,34 @@ def test_stream(self):
         q_exec = dpctl.SyclQueue(x.sycl_device)
 
         y = x.to_device(q_prof, stream=q_exec)
+        assert (x.asnumpy() == y.asnumpy()).all()
         assert_sycl_queue_equal(y.sycl_queue, q_prof)
 
         q_exec = dpctl.SyclQueue(x.sycl_device)
         _ = dpnp.linspace(0, 20, num=10**5, sycl_queue=q_exec)
         y = x.to_device(q_prof, stream=q_exec)
+        assert (x.asnumpy() == y.asnumpy()).all()
         assert_sycl_queue_equal(y.sycl_queue, q_prof)
 
     def test_stream_no_sync(self):
         x = dpnp.full(100, 2, dtype=dpnp.int64)
         q_prof = dpctl.SyclQueue(x.sycl_device, property="enable_profiling")
 
-        for stream in [None, 1, dpctl.SyclDevice(), x.sycl_queue]:
+        for stream in [None, x.sycl_queue]:
             y = x.to_device(q_prof, stream=stream)
+            assert (x.asnumpy() == y.asnumpy()).all()
             assert_sycl_queue_equal(y.sycl_queue, q_prof)
 
+    @pytest.mark.parametrize(
+        "stream",
+        [1, dict(), dpctl.SyclDevice()],
+        ids=["scalar", "dictionary", "device"],
+    )
+    def test_invalid_stream(self, stream):
+        x = dpnp.ones(2, dtype=dpnp.int64)
+        q_prof = dpctl.SyclQueue(x.sycl_device, property="enable_profiling")
+        assert_raises(TypeError, x.to_device, q_prof, stream=stream)
+
 
 @pytest.mark.parametrize(
     "device",