use monkeypatch to set KIM_PROPERTY_PATH

.github/workflows/testing.yml

@@ -41,7 +41,6 @@ jobs:
         run: |
           export PATH=$PATH:$PWD/aflow.3.2.14
           cd tests
-          export KIM_PROPERTY_PATH=$PWD/mock-test-drivers-dir/*/local-props:$PWD/mock-test-drivers-dir/*/local_props          
           pytest
 
       - name: Run example

tests/test_KIMTest.py

@@ -3,6 +3,7 @@
 from kim_tools.test_driver import KIMTestDriver
 from ase.atoms import Atoms
 from ase.calculators.lj import LennardJones
+import os
 
 class TestTestDriver(KIMTestDriver):
     def _calculate(self,property_name):
@@ -18,7 +19,7 @@ def _calculate(self,property_name):
         self._add_key_to_current_property_instance("species", self.atoms.get_chemical_symbols()[0])
         self._add_key_to_current_property_instance("mass", self.atoms.get_masses()[0], "amu", {'source-std-uncert-value':1})
 
-def test_kimtest():
+def test_kimtest(monkeypatch):
     atoms = Atoms(['Ar'], [[0, 0, 0]], cell=[[1, 0, 0], [0, 2, 0], [0, 0, 2]])
     test = TestTestDriver(LennardJones())
     testing_property_names = [
@@ -30,13 +31,12 @@ def test_kimtest():
         'atomic-mass3', # found in $PWD/mock-test-drivers-dir/mock-td/local_props. For testing how KDP will set these.
                         # test this using `export KIM_PROPERTY_PATH=$PWD/mock-test-drivers-dir/*/local-props:$PWD/mock-test-drivers-dir/*/local_props`
     ]
+
+    monkeypatch.setenv("KIM_PROPERTY_PATH", os.path.join(os.getcwd(),'mock-test-drivers-dir/*/local-props')+':'+os.path.join(os.getcwd(),'mock-test-drivers-dir/*/local_props'))
 
     for prop_name in testing_property_names:
         test(atoms,property_name=prop_name)
 
     assert len(test.property_instances) == 6
     test.write_property_instances_to_file()
-
-
-if __name__ == '__main__':
-    test_kimtest()
+