use read/write_events in tests

Author: alexfikl

test/test_array.py

@@ -1345,36 +1345,55 @@ def test_event_management(ctx_factory):
     from pyopencl.clrandom import rand as clrand
 
     x = clrand(queue, (5, 10), dtype=np.float32)
-    assert len(x.events) == 1, len(x.events)
+    assert len(x.write_events) == 1, x.write_events
+    assert len(x.read_events) == 0, x.read_events
 
     x.finish()
 
-    assert len(x.events) == 0
-
-    y = x+x
-    assert len(y.events) == 1
-    y = x*x
-    assert len(y.events) == 1
-    y = 2*x
-    assert len(y.events) == 1
-    y = 2/x
-    assert len(y.events) == 1
-    y = x/2
-    assert len(y.events) == 1
-    y = x**2
-    assert len(y.events) == 1
-    y = 2**x
-    assert len(y.events) == 1
+    assert len(x.write_events) == 0
+    assert len(x.read_events) == 0
+
+    y = x + x
+    assert len(y.write_events) == 1 and len(y.read_events) == 0
+    assert len(x.write_events) == 0 and len(x.read_events) == 1
+
+    y = x * x
+    assert len(y.write_events) == 1 and len(y.read_events) == 0
+    assert len(x.write_events) == 0 and len(x.read_events) == 2
+
+    y = 2 * x
+    assert len(y.write_events) == 1 and len(y.read_events) == 0
+    assert len(x.write_events) == 0 and len(x.read_events) == 3
+
+    y = 2 / x
+    assert len(y.write_events) == 1 and len(y.read_events) == 0
+    assert len(x.write_events) == 0 and len(x.read_events) == 4
+
+    y = x / 2
+    assert len(y.write_events) == 1 and len(y.read_events) == 0
+    assert len(x.write_events) == 0 and len(x.read_events) == 5
+
+    y = x ** 2
+    assert len(y.write_events) == 1 and len(y.read_events) == 0
+    assert len(x.write_events) == 0 and len(x.read_events) == 6
+
+    y = 2 ** x
+    assert len(y.write_events) == 1 and len(y.read_events) == 0
+    assert len(x.write_events) == 0 and len(x.read_events) == 7
+
+    x.finish()
 
     for _i in range(10):
         x.fill(0)
 
-    assert len(x.events) == 10
+    assert len(x.write_events) == 10
+    assert len(x.read_events) == 0
 
     for _i in range(1000):
         x.fill(0)
 
-    assert len(x.events) < 100
+    assert len(x.write_events) < 100
+    assert len(x.read_events) == 0
 
 # }}}
 
@@ -1618,7 +1637,7 @@ def test_get_async(ctx_factory):
     assert np.abs(b1 - b).mean() < 1e-5
 
     wait_event = cl.UserEvent(context)
-    b_gpu.add_event(wait_event)
+    b_gpu.add_write_event(wait_event)
     b, evt = b_gpu.get_async()  # testing that this doesn't hang
     wait_event.set_status(cl.command_execution_status.COMPLETE)
     evt.wait()