Fix tests which fail if GPU is not available (only CPU is available) (#359)

* Skip tests required OpenCL if GPU is not available
* Skip tests for SyclContext which require GPU

Author: PokhodenkoSA

dpctl/tests/test_sycl_context.py

@@ -356,7 +356,7 @@ def test_context_equals():
     try:
         ctx1 = dpctl.SyclContext("gpu")
         ctx0 = dpctl.SyclContext("gpu")
-    except dpctl.SyclQueueCreationError:
+    except ValueError:
         pytest.skip()
     assert ctx0.equals(ctx1)
 
@@ -373,7 +373,10 @@ def test_context_can_be_used_in_queue(valid_filter):
 
 
 def test_context_can_be_used_in_queue2(valid_filter):
-    d = dpctl.SyclDevice(valid_filter)
+    try:
+        d = dpctl.SyclDevice(valid_filter)
+    except ValueError:
+        pytest.skip()
     if d.default_selector_score < 0:
         # skip test for devices rejected by default selector
         pytest.skip()

dpctl/tests/test_sycl_queue_manager.py

@@ -43,6 +43,7 @@ def test_is_in_device_context_inside_nested_device_ctxt(self):
 
 
 @unittest.skipIf(not has_sycl_platforms(), "No SYCL platforms available")
+@unittest.skipUnless(has_gpu(), "No OpenCL GPU queues available")
 class TestGetCurrentDevice(unittest.TestCase):
     def test_get_current_device_type_outside_device_ctxt(self):
         self.assertNotEqual(dpctl.get_current_device_type(), None)