Add test for pickle with dill

Author: aseyboldt

pymc3/tests/test_parallel_sampling.py

@@ -51,13 +51,21 @@ def test_bad_unpickle():
 
 
 tt_vector = tt.TensorType(theano.config.floatX, [False])
+
+
 @theano.as_op([tt_vector, tt.iscalar], [tt_vector])
 def _crash_remote_process(a, master_pid):
     if os.getpid() != master_pid:
         os.exit(0)
     return 2 * np.array(a)
 
 
+def test_dill():
+    with pm.Model():
+        pm.Normal('x')
+        pm.sample(tune=1, draws=1, chains=2, cores=2, pickle_backend="dill", mp_ctx="spawn")
+
+
 def test_remote_pipe_closed():
     master_pid = os.getpid()
     with pm.Model():

requirements-dev.txt

@@ -18,3 +18,4 @@ seaborn>=0.8.1
 sphinx-autobuild==0.7.1
 sphinx>=1.5.5
 watermark
+dill