more robust RuntimeError test; corrected name of double-defined test

python/tests/test_Orientation.py

@@ -83,7 +83,7 @@ class TestOrientation:
             Orientation(family=invalid_family)
 
     @pytest.mark.parametrize('invalid_lattice',[None,'fcc','bcc','hello'])
-    def test_invalid_family_init(self,invalid_lattice):
+    def test_invalid_lattice_init(self,invalid_lattice):
         with pytest.raises(KeyError):
             Orientation(lattice=invalid_lattice)
 

python/tests/test_util.py

@@ -19,9 +19,9 @@ class TestUtil:
         out,err = util.execute('sh -c "echo $test_for_execute"',env={'test_for_execute':'test'})
         assert out=='test\n' and err==''
 
-    def test_execute_invalid(self):
+    def test_execute_runtime_error(self):
         with pytest.raises(RuntimeError):
-            util.execute('/bin/false')
+            util.execute('false')
 
     @pytest.mark.parametrize('input,output',
                             [