tests: scheduler fixture: return 'multiprocessing' as string

Author: orbeckst

conftest.py

@@ -29,4 +29,4 @@ def scheduler(request, client):
     if request.param == 'distributed':
         return client
     else:
-        return multiprocessing
+        return request.param

pmda/test/test_parallel.py

@@ -102,15 +102,15 @@ def scheduler(request, client):
 def test_scheduler(analysis, scheduler):
     analysis.run(scheduler=scheduler)
 
-      
+
 def test_nframes_less_nblocks_warning(analysis):
     u = mda.Universe(analysis._top, analysis._traj)
     n_frames = u.trajectory.n_frames
     with pytest.warns(UserWarning):
         analysis.run(stop=2, n_blocks=4, n_jobs=2)
     assert len(analysis.res) == 2
-    
-    
+
+
 @pytest.mark.parametrize('n_blocks', np.arange(1, 11))
 def test_nblocks(analysis, n_blocks):
     analysis.run(n_blocks=n_blocks)