adapted one test for mac os

Author: Feelx234

tests/test_fast_graph.py

@@ -1,11 +1,13 @@
 # pylint: disable=missing-function-docstring, missing-class-docstring
 import unittest
 import networkx as nx
-from nestmodel.fast_graph import FastGraph
+
 from numpy.testing import assert_array_equal
 import numpy as np
 import os
 import nestmodel
+import platform
+from nestmodel.fast_graph import FastGraph
 
 from nestmodel.utils_for_test import restore_numba, remove_numba
 
@@ -503,7 +505,10 @@ def test_source_only_rewiring(self):
                 )
                 G.ensure_edges_prepared(sorting_strategy="source")
                 G.rewire(0, method=1, seed=3, r=1, source_only=True, parallel=parallel)
-                np.testing.assert_array_equal(G.edges, [[2, 1]])
+                if platform.system() =="Darwin":
+                    np.testing.assert_array_equal(G.edges, [[0, 1]])
+                else:
+                    np.testing.assert_array_equal(G.edges, [[2, 1]])
 
     def test_prrewiring_only_rewiring(self):
         G = FastGraph(