Added some tests to involve capsule

Added test to sycl context testing file to create a context
from a sub-device

Author: oleksandr-pavlyk

dpctl/tests/test_sycl_context.py

@@ -159,6 +159,16 @@ def test_context_multi_device():
     shmem_1 = dpmem.MemoryUSMShared(256, queue=q1)
     shmem_2 = dpmem.MemoryUSMDevice(256, queue=q2)
     shmem_2.copy_from_device(shmem_1)
+    # create context for single sub-device
+    ctx1 = dpctl.SyclContext(d1)
+    q1 = dpctl.SyclQueue(ctx1, d1)
+    shmem_1 = dpmem.MemoryUSMShared(256, queue=q1)
+    cap = ctx1._get_capsule()
+    del ctx1
+    ctx2 = dpctl.SyclContext(cap)
+    q2 = dpctl.SyclQueue(ctx2, d1)
+    shmem_2 = dpmem.MemoryUSMDevice(256, queue=q2)
+    shmem_2.copy_from_device(shmem_1)
 
 
 def test_hashing_of_context():
@@ -169,3 +179,8 @@ def test_hashing_of_context():
     """
     ctx_dict = {dpctl.SyclContext(): "default_context"}
     assert ctx_dict
+
+
+def test_context_repr():
+    ctx = dpctl.SyclContext()
+    assert type(ctx.__repr__()) is str

dpctl/tests/test_sycl_event.py

@@ -180,3 +180,10 @@ def test_sycl_timer():
         timer(queue=q_no_profiling)
     with pytest.raises(TypeError):
         timer(queue=None)
+
+
+def test_event_capsule():
+    ev = dpctl.SyclEvent()
+    cap = ev._get_capsule()
+    ev2 = dpctl.SyclEvent(cap)
+    assert type(ev2) == type(ev)

dpctl/tests/test_sycl_queue.py

@@ -424,3 +424,25 @@ def test_queue_submit_barrier(valid_filter):
     ev3.wait()
     ev1.wait()
     ev2.wait()
+
+
+def test_queue__repr__():
+    q1 = dpctl.SyclQueue()
+    r1 = q1.__repr__()
+    q2 = dpctl.SyclQueue(property="in_order")
+    r2 = q2.__repr__()
+    q3 = dpctl.SyclQueue(property="enable_profiling")
+    r3 = q3.__repr__()
+    q4 = dpctl.SyclQueue(property=["in_order", "enable_profiling"])
+    r4 = q4.__repr__()
+    assert type(r1) is str
+    assert type(r2) is str
+    assert type(r3) is str
+    assert type(r4) is str
+
+
+def test_queue_capsule():
+    q = dpctl.SyclQueue()
+    cap = q._get_capsule()
+    q2 = dpctl.SyclQueue(cap)
+    assert q == q2