diff --git a/setup.py b/setup.py
index 05e8ca67e1..ba0922b273 100644
--- a/setup.py
+++ b/setup.py
@@ -500,7 +500,7 @@ def setup_package():
         name=package_name,
         package_dir={"": NRN_PY_ROOT},
         packages=py_packages,
-        package_data={"neuron": ["*.dat", "tests/*.json"]},
+        package_data={"neuron": ["*.dat"]},
         ext_modules=extensions,
         scripts=[
             os.path.join(NRN_PY_SCRIPTS, f)
diff --git a/share/lib/python/neuron/tests/test_rxd.json b/share/lib/python/neuron/tests/test_rxd.json
deleted file mode 100644
index 10c681c18f..0000000000
--- a/share/lib/python/neuron/tests/test_rxd.json
+++ /dev/null
@@ -1,666 +0,0 @@
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-        4.33273265966826e-11,
-        1.9674719569026998e-10,
-        8.63399030466642e-10,
-        3.657079221471436e-09,
-        1.4932070567139546e-08,
-        5.869401066025267e-08,
-        2.218029569259483e-07,
-        8.04721279962928e-07,
-        2.79921382956858e-06,
-        9.323183477925758e-06,
-        2.969562407156746e-05,
-        9.035408030381584e-05,
-        0.0002623954841897342,
-        0.0007269141545185264,
-        0.0019207269099111785,
-        0.004841879243431059,
-        0.01164965343224167,
-        0.02674863273052536,
-        0.05846777500048251,
-        0.12067994530088386,
-        0.23084596756508963,
-        0.3962758789592411,
-        0.5900229199038892,
-        0.7586218889021915,
-        0.8722981880509894,
-        0.9370823930113995,
-        0.9705058492437157,
-        0.9867204567968437,
-        0.9942426940783657,
-        0.9975977799681778,
-        0.9990359504416326,
-        0.9996249801006252,
-        0.9998477834074035,
-        0.9999041758657206,
-        0.9998477834074035,
-        0.9996249801006252,
-        0.9990359504416326,
-        0.9975977799681778,
-        0.9942426940783657,
-        0.9867204567968437,
-        0.9705058492437147,
-        0.9370823930113918,
-        0.8722981880509718,
-        0.75862188890219,
-        0.5900229199038813,
-        0.39627587895923605,
-        0.2308459675650862,
-        0.12067994530088234,
-        0.058467775000481934,
-        0.026748632730525093,
-        0.011649653432241593,
-        0.0048418792434310265,
-        0.0019207269099111698,
-        0.0007269141545185239,
-        0.00026239548418973194,
-        9.035408030381517e-05,
-        2.9695624071567297e-05,
-        9.323183477925707e-06,
-        2.799213829568571e-06,
-        8.04721279962927e-07,
-        2.2180295692594684e-07,
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-        1.4932070567139493e-08,
-        3.6570792214714333e-09,
-        8.633990304666437e-10,
-        1.967471956902688e-10,
-        4.332732659668245e-11,
-        9.231798364410489e-12,
-        1.9053473045994673e-12,
-        3.813250931917625e-13,
-        7.407949505967726e-14,
-        1.3983268950494506e-14,
-        2.5670459658189344e-15,
-        4.587323676899693e-16,
-        7.986451339137798e-17,
-        1.3557115052023379e-17,
-        2.2456041210043886e-18,
-        3.632196361482047e-19,
-        5.740880124662945e-20,
-        8.872570814175644e-21,
-        1.341708879755948e-21,
-        1.9865049531958394e-22,
-        2.8887040073782976e-23,
-        4.66614436873957e-24
-    ]
-}
\ No newline at end of file
diff --git a/share/lib/python/neuron/tests/test_rxd.py b/share/lib/python/neuron/tests/test_rxd.py
index dc6cd2aef8..db85696c90 100644
--- a/share/lib/python/neuron/tests/test_rxd.py
+++ b/share/lib/python/neuron/tests/test_rxd.py
@@ -2,9 +2,7 @@
 import neuron
 import unittest
 import sys
-import os
-import json
-from multiprocessing import Process, Lock
+from multiprocessing import Process
 
 try:
     import multiprocessing as mp
@@ -13,12 +11,674 @@
 except:
     pass
 
-# load the reference data from rxd_data.json
-fdir = os.path.dirname(os.path.abspath(__file__))
-test_data = json.load(open(os.path.join(fdir, "test_rxd.json"), "r"))
+scalar_bistable_data = [
+    4.666144368739553e-24,
+    2.888704007378294e-23,
+    1.986504953195841e-22,
+    1.341708879755938e-21,
+    8.872570814175589e-21,
+    5.740880124662921e-20,
+    3.632196361482038e-19,
+    2.245604121004388e-18,
+    1.355711505202327e-17,
+    7.986451339137754e-17,
+    4.587323676899676e-16,
+    2.567045965818926e-15,
+    1.398326895049450e-14,
+    7.407949505967670e-14,
+    3.813250931917600e-13,
+    1.905347304599457e-12,
+    9.231798364410461e-12,
+    4.332732659668245e-11,
+    1.967471956902693e-10,
+    8.633990304666386e-10,
+    3.657079221471421e-09,
+    1.493207056713948e-08,
+    5.869401066025243e-08,
+    2.218029569259474e-07,
+    8.047212799629250e-07,
+    2.799213829568570e-06,
+    9.323183477925731e-06,
+    2.969562407156739e-05,
+    9.035408030381566e-05,
+    2.623954841897339e-04,
+    7.269141545185255e-04,
+    1.920726909911178e-03,
+    4.841879243431064e-03,
+    1.164965343224173e-02,
+    2.674863273052559e-02,
+    5.846777500048252e-02,
+    1.206799453008834e-01,
+    2.308459675650935e-01,
+    3.962758789592548e-01,
+    5.900229199039158e-01,
+    7.586218889022415e-01,
+    8.722981880510015e-01,
+    9.370823930114011e-01,
+    9.705058492437171e-01,
+    9.867204567968444e-01,
+    9.942426940783661e-01,
+    9.975977799681778e-01,
+    9.990359504416327e-01,
+    9.996249801006252e-01,
+    9.998477834074035e-01,
+    9.999041758657206e-01,
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+    9.996249801006252e-01,
+    9.990359504416326e-01,
+    9.975977799681777e-01,
+    9.942426940783655e-01,
+    9.867204567968437e-01,
+    9.705058492437160e-01,
+    9.370823930113995e-01,
+    8.722981880509845e-01,
+    7.586218889021992e-01,
+    5.900229199038706e-01,
+    3.962758789592359e-01,
+    2.308459675650852e-01,
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+    5.846777500048142e-02,
+    2.674863273052497e-02,
+    1.164965343224158e-02,
+    4.841879243431020e-03,
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+    7.269141545185224e-04,
+    2.623954841897313e-04,
+    9.035408030381501e-05,
+    2.969562407156726e-05,
+    9.323183477925702e-06,
+    2.799213829568569e-06,
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+    2.218029569259469e-07,
+    5.869401066025247e-08,
+    1.493207056713951e-08,
+    3.657079221471437e-09,
+    8.633990304666446e-10,
+    1.967471956902691e-10,
+    4.332732659668252e-11,
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+    1.905347304599471e-12,
+    3.813250931917631e-13,
+    7.407949505967741e-14,
+    1.398326895049453e-14,
+    2.567045965818940e-15,
+    4.587323676899705e-16,
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+    1.355711505202341e-17,
+    2.245604121004394e-18,
+    3.632196361482056e-19,
+    5.740880124662959e-20,
+    8.872570814175665e-21,
+    1.341708879755951e-21,
+    1.986504953195844e-22,
+    2.888704007378305e-23,
+    4.666144368739581e-24,
+]
 
+trivial_ecs_data = {
+    False: [
+        1.000000000000000e00,
+        9.999975013886804e-01,
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+    ],
+    1e-2: [
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+        3.261113573130471e-01,
+        3.234267379284118e-01,
+        3.207783627593125e-01,
+    ],
+}
 
-def scalar_bistable(lock, path=None):
+
+def scalar_bistable():
     from neuron import rxd
 
     h.load_file("stdrun.hoc")
@@ -34,25 +694,15 @@ def scalar_bistable(lock, path=None):
 
     # check the results
     result = h.Vector(c.nodes.concentration)
-    if path is not None:
-        lock.acquire()
-        if os.path.exists(path):
-            data = json.load(open(path, "r"))
-        else:
-            data = {}
-        data["scalar_bistable_data"] = list(result)
-        json.dump(data, open(path, "w"), indent=4)
-        lock.release()
-    else:
-        cmpV = h.Vector(test_data["scalar_bistable_data"])
-        cmpV.sub(result)
-        cmpV.abs()
-        if cmpV.sum() >= 1e-6:
-            sys.exit(-1)
-    sys.exit(0)
-
-
-def trivial_ecs(scale, lock, path=None):
+    cmpV = h.Vector(scalar_bistable_data)
+    cmpV.sub(result)
+    cmpV.abs()
+    if cmpV.sum() < 1e-6:
+        sys.exit(0)
+    sys.exit(-1)
+
+
+def trivial_ecs(scale):
     from neuron import h, crxd as rxd
     import numpy
     import warnings
@@ -64,7 +714,6 @@ def trivial_ecs(scale, lock, path=None):
         h.CVode().active(True)
         h.CVode().event(tstop)
     else:  # fixed step case
-        h.CVode().active(False)
         h.dt = 0.1
 
     sec = h.Section()  # NEURON requires at least 1 section
@@ -108,63 +757,40 @@ def trivial_ecs(scale, lock, path=None):
     h.finitialize()
     h.continuerun(tstop)  # run the simulation
 
-    if path is not None:
-        lock.acquire()
-        if os.path.exists(path):
-            data = json.load(open(path, "r"))
-        else:
-            data = {}
-        if "trivial_ecs_data" not in data:
-            data["trivial_ecs_data"] = {}
-        data["trivial_ecs_data"][str(scale)] = list(ecs_vec)
-        json.dump(data, open(path, "w"), indent=4)
-        lock.release()
-    else:
-        # compare with previous solution
-        ecs_vec.sub(h.Vector(test_data["trivial_ecs_data"][str(scale)]))
-        ecs_vec.abs()
-        if ecs_vec.sum() > 1e-9:
-            sys.exit(-1)
-    sys.exit(0)
+    # compare with previous solution
+    ecs_vec.sub(h.Vector(trivial_ecs_data[scale]))
+    ecs_vec.abs()
+    if ecs_vec.sum() > 1e-9:
+        return -1
+    return 0
 
 
 class RxDTestCase(unittest.TestCase):
     """Tests of rxd"""
 
-    @classmethod
-    def setUpClass(cls):
-        # Check for --save in command-line arguments
-        cls.path = None
-        cls.lock = Lock()
-        if len(sys.argv) > 1:
-            for arg1, arg2 in zip(sys.argv, sys.argv[1:]):
-                if arg1 == "--save":
-                    cls.path = arg2
-                    break
-
     def test_rxd(self):
-        p = Process(target=scalar_bistable, args=(self.lock, self.path))
+        p = Process(target=scalar_bistable)
         p.start()
         p.join()
         assert p.exitcode == 0
         return 0
 
     def test_ecs_diffusion_fixed_step(self):
-        p = Process(target=trivial_ecs, args=(False, self.lock, self.path))
+        p = Process(target=trivial_ecs, args=(False,))
         p.start()
         p.join()
         assert p.exitcode == 0
         return 0
 
     def test_ecs_diffusion_variable_step_coarse(self):
-        p = Process(target=trivial_ecs, args=(1e-2, self.lock, self.path))
+        p = Process(target=trivial_ecs, args=(1e-2,))
         p.start()
         p.join()
         assert p.exitcode == 0
         return 0
 
     def test_ecs_diffusion_variable_step_fine(self):
-        p = Process(target=trivial_ecs, args=(1e-5, self.lock, self.path))
+        p = Process(target=trivial_ecs, args=(1e-5,))
         p.start()
         p.join()
         assert p.exitcode == 0
@@ -181,7 +807,5 @@ def test():
 
 
 if __name__ == "__main__":
-    """Run the rxd tests unless --save <path> is given, in which case save the
-    test data to that path without comparing the results to the reference data.
-    """
+    # unittest.main()
     test()