Extended tests to check consistency of __eq__ and __hash__

Author: oleksandr-pavlyk

dpctl/tests/test_sycl_context.py

@@ -76,6 +76,7 @@ def test_context_not_equals():
     except ValueError:
         pytest.skip()
     assert ctx_cpu != ctx_gpu
+    assert hash(ctx_cpu) != hash(ctx_gpu)
 
 
 def test_context_not_equals2():
@@ -94,6 +95,7 @@ def test_context_equals():
     except ValueError:
         pytest.skip()
     assert ctx0 == ctx1
+    assert hash(ctx0) == hash(ctx1)
 
 
 def test_name():

dpctl/tests/test_sycl_device.py

@@ -615,6 +615,7 @@ def test_filter_string_property():
             dev_id = d.filter_string
             d_r = dpctl.SyclDevice(dev_id)
             assert d == d_r
+            assert hash(d) == hash(d_r)
 
 
 def test_filter_string_method():
@@ -631,6 +632,9 @@ def test_filter_string_method():
                     )
                     d_r = dpctl.SyclDevice(dev_id)
                     assert d == d_r, "Failed "
+                    assert hash(d) == hash(
+                        d_r
+                    ), "Hash equality is inconsistent with __eq__"
 
 
 def test_hashing_of_device():

dpctl/tests/test_sycl_queue.py

@@ -358,6 +358,7 @@ def test_context_not_equals():
         pytest.skip()
     ctx_cpu = cpuQ.get_sycl_context()
     assert ctx_cpu != ctx_gpu
+    assert hash(ctx_cpu) != hash(ctx_gpu)
 
 
 def test_context_equals():
@@ -369,6 +370,7 @@ def test_context_equals():
     ctx0 = gpuQ0.get_sycl_context()
     ctx1 = gpuQ1.get_sycl_context()
     assert ctx0 == ctx1
+    assert hash(ctx0) == hash(ctx1)
 
 
 def test_hashing_of_queue():