message: Tweak GPUCompatibleFIFOQueue's unit test so it runs more configurations
  tf.constant places on the CPU executing eagerly, which mismatched with GPU placements later in the test.
  Fixes
diff: @@ -415,7 +415,9 @@ class GPUCompatibleFIFOQueueTests(test.TestCase):
  with test_util.use_gpu():
  q = data_flow_ops.GPUCompatibleFIFOQueue(10, dtypes_lib.float32)
  elems_numpy = [10.0, 20.0, 30.0]
  - elems = [constant_op.constant(x) for x in elems_numpy]
  + # The identity ensures constants are copied to the GPU immediately
  + elems = [array_ops.identity(constant_op.constant(x))
  + for x in elems_numpy]
  for x in elems:
  self.evaluate(q.enqueue((x,)))
  