Correct misnamed nnum to enum (#1359)

* Correct misnamed `nnum` to `enum`

* add test

Co-authored-by: Alex Kaszynski <[email protected]>

Author: 2 people

src/ansys/mapdl/core/post.py

@@ -615,10 +615,10 @@ def _all_nnum(self):
     def _all_enum(self):
         self._mapdl.cm("__TMP_ELEM__", "ELEM")
         self._mapdl.allsel()
-        nnum = self._mapdl.get_array("ELEM", item1="ELIST")
+        enum = self._mapdl.get_array("ELEM", item1="ELIST")
 
         # rerun if encountered weird edge case of negative first index.
-        if nnum[0] == -1:
+        if enum[0] == -1:
             enum = self._mapdl.get_array("ELEM", item1="ELIST")
         self._mapdl.cmsel("S", "__TMP_ELEM__", "ELEM")
         return enum.astype(np.int32, copy=False)

tests/test_post.py

@@ -431,6 +431,19 @@ def test_disp(mapdl, static_solve, comp):
     assert np.allclose(disp_from_grpc, disp_from_prns)
 
 
+def test_enum_all(mapdl, static_solve):
+    # ensure that element selection status has no effect on the all_enum
+    try:
+        n_elem = mapdl.mesh.n_elem
+        mapdl.esel("S", "ELEM", vmin=10, vmax=19, mute=True)
+        mapdl.post_processing._all_enum
+        assert len(mapdl.post_processing._all_enum) == n_elem
+    finally:
+        # static solve is a module fixture, change in state here will affect
+        # downstream tests unless reset
+        mapdl.allsel(mute=True)
+
+
 def test_disp_norm_all(mapdl, static_solve):
 
     # test norm