Update usage of get_worker() in tests

In dask/distributed#7580 `get_worker` was
modified to return the worker of a task, thus it cannot be used by
`client.run`, and we must now use `dask_worker` as the first argument to
`client.run` to obtain the worker.

dask_cuda/tests/test_explicit_comms.py

@@ -11,7 +11,7 @@
 from dask import dataframe as dd
 from dask.dataframe.shuffle import partitioning_index
 from dask.dataframe.utils import assert_eq
-from distributed import Client, get_worker
+from distributed import Client
 from distributed.deploy.local import LocalCluster
 
 import dask_cuda
@@ -314,8 +314,8 @@ def test_jit_unspill(protocol):
 
 
 def _test_lock_workers(scheduler_address, ranks):
-    async def f(_):
-        worker = get_worker()
+    async def f(info):
+        worker = info["worker"]
         if hasattr(worker, "running"):
             assert not worker.running
         worker.running = True

dask_cuda/tests/test_local_cuda_cluster.py

@@ -9,7 +9,6 @@
 from dask.distributed import Client
 from distributed.system import MEMORY_LIMIT
 from distributed.utils_test import gen_test, raises_with_cause
-from distributed.worker import get_worker
 
 from dask_cuda import CUDAWorker, LocalCUDACluster, utils
 from dask_cuda.initialize import initialize
@@ -140,7 +139,9 @@ async def test_no_memory_limits_cluster():
     ) as cluster:
         async with Client(cluster, asynchronous=True) as client:
             # Check that all workers use a regular dict as their "data store".
-            res = await client.run(lambda: isinstance(get_worker().data, dict))
+            res = await client.run(
+                lambda dask_worker: isinstance(dask_worker.data, dict)
+            )
             assert all(res.values())
 
 
@@ -161,7 +162,9 @@ async def test_no_memory_limits_cudaworker():
             await new_worker
             await client.wait_for_workers(2)
             # Check that all workers use a regular dict as their "data store".
-            res = await client.run(lambda: isinstance(get_worker().data, dict))
+            res = await client.run(
+                lambda dask_worker: isinstance(dask_worker.data, dict)
+            )
             assert all(res.values())
             await new_worker.close()
 

dask_cuda/tests/test_spill.py

@@ -6,7 +6,7 @@
 
 import dask
 from dask import array as da
-from distributed import Client, get_worker, wait
+from distributed import Client, wait
 from distributed.metrics import time
 from distributed.sizeof import sizeof
 from distributed.utils_test import gen_cluster, gen_test, loop  # noqa: F401
@@ -57,21 +57,25 @@ def assert_device_host_file_size(
     )
 
 
-def worker_assert(total_size, device_chunk_overhead, serialized_chunk_overhead):
+def worker_assert(
+    dask_worker, total_size, device_chunk_overhead, serialized_chunk_overhead
+):
     assert_device_host_file_size(
-        get_worker().data, total_size, device_chunk_overhead, serialized_chunk_overhead
+        dask_worker.data, total_size, device_chunk_overhead, serialized_chunk_overhead
     )
 
 
-def delayed_worker_assert(total_size, device_chunk_overhead, serialized_chunk_overhead):
+def delayed_worker_assert(
+    dask_worker, total_size, device_chunk_overhead, serialized_chunk_overhead
+):
     start = time()
     while not device_host_file_size_matches(
-        get_worker().data, total_size, device_chunk_overhead, serialized_chunk_overhead
+        dask_worker.data, total_size, device_chunk_overhead, serialized_chunk_overhead
     ):
         sleep(0.01)
         if time() < start + 3:
             assert_device_host_file_size(
-                get_worker().data,
+                dask_worker.data,
                 total_size,
                 device_chunk_overhead,
                 serialized_chunk_overhead,
@@ -143,17 +147,23 @@ async def test_cupy_cluster_device_spill(params):
                 await wait(xx)
 
                 # Allow up to 1024 bytes overhead per chunk serialized
-                await client.run(worker_assert, x.nbytes, 1024, 1024)
+                await client.run(
+                    lambda dask_worker: worker_assert(dask_worker, x.nbytes, 1024, 1024)
+                )
 
                 y = client.compute(x.sum())
                 res = await y
 
                 assert (abs(res / x.size) - 0.5) < 1e-3
 
-                await client.run(worker_assert, x.nbytes, 1024, 1024)
-                host_chunks = await client.run(lambda: len(get_worker().data.host))
+                await client.run(
+                    lambda dask_worker: worker_assert(dask_worker, x.nbytes, 1024, 1024)
+                )
+                host_chunks = await client.run(
+                    lambda dask_worker: len(dask_worker.data.host)
+                )
                 disk_chunks = await client.run(
-                    lambda: len(get_worker().data.disk or list())
+                    lambda dask_worker: len(dask_worker.data.disk or list())
                 )
                 for hc, dc in zip(host_chunks.values(), disk_chunks.values()):
                     if params["spills_to_disk"]:
@@ -245,9 +255,11 @@ async def test_cudf_cluster_device_spill(params):
 
                 del cdf
 
-                host_chunks = await client.run(lambda: len(get_worker().data.host))
+                host_chunks = await client.run(
+                    lambda dask_worker: len(dask_worker.data.host)
+                )
                 disk_chunks = await client.run(
-                    lambda: len(get_worker().data.disk or list())
+                    lambda dask_worker: len(dask_worker.data.disk or list())
                 )
                 for hc, dc in zip(host_chunks.values(), disk_chunks.values()):
                     if params["spills_to_disk"]:
@@ -256,8 +268,12 @@ async def test_cudf_cluster_device_spill(params):
                         assert hc > 0
                         assert dc == 0
 
-                await client.run(worker_assert, nbytes, 32, 2048)
+                await client.run(
+                    lambda dask_worker: worker_assert(dask_worker, nbytes, 32, 2048)
+                )
 
                 del cdf2
 
-                await client.run(delayed_worker_assert, 0, 0, 0)
+                await client.run(
+                    lambda dask_worker: delayed_worker_assert(dask_worker, 0, 0, 0)
+                )