refactor: increase post module coverage (#3556)

* refactor: removing unused code and typos

* feat: increasing coverage

* chore: adding changelog file 3556.added.md [dependabot-skip]

* feat: fixing coverage

* refactor: removing unused code

* tests: increasing coverage

* fix: tests

* fix: all test

---------

Co-authored-by: pyansys-ci-bot <[email protected]>

doc/changelog.d/3556.added.md

@@ -0,0 +1 @@
+refactor: increase post module coverage

src/ansys/mapdl/core/post.py

@@ -130,22 +130,12 @@ def __init__(self, mapdl):
         if not isinstance(mapdl, MapdlBase):  # pragma: no cover
             raise TypeError("Must be initialized using Mapdl instance")
         self._mapdl_weakref = weakref.ref(mapdl)
-        self._set_loaded = False
 
     @property
     def _mapdl(self):
         """Return the weakly referenced instance of MAPDL"""
         return self._mapdl_weakref()
 
-    @property
-    def _log(self):
-        """Alias for mapdl log"""
-        return self._mapdl._log
-
-    def _set_log_level(self, level):
-        """Alias for mapdl._set_log_level"""
-        return self._mapdl._set_log_level(level)
-
     @supress_logging
     def __repr__(self):
         info = "PyMAPDL PostProcessing Instance\n"
@@ -157,7 +147,7 @@ def __repr__(self):
         if self._mapdl.parameters.routine == "POST1":
             info += "\n\n" + self._mapdl.set("LIST")
         else:
-            info += "\n\n Enable routine POST1 to see a table of available results"
+            info += "\n\nEnable routine POST1 to see a table of available results"
 
         return info
 
@@ -208,10 +198,6 @@ def frequency_values(self) -> np.ndarray:
         # Because in MAPDL is the same.
         return self.time_values
 
-    def _reset_cache(self):
-        """Reset local cache"""
-        self._set_loaded = False
-
     @property
     def filename(self) -> str:
         """Return the current result file name without extension.
@@ -732,19 +718,6 @@ def _plot_cell_scalars(self, scalars, show_elem_numbering=False, **kwargs):
         pl.plot(meshes, [], labels, mapdl=self, **kwargs)
         return pl.show(**kwargs)
 
-    @property
-    @supress_logging
-    def _all_nnum(self):
-        with self._mapdl.save_selection:
-            self._mapdl.allsel()
-            nnum = self._mapdl.get_array("NODE", item1="NLIST")
-
-            # rerun if encountered weird edge case of negative first index.
-            if nnum[0] == -1:
-                nnum = self._mapdl.get_array("NODE", item1="NLIST")
-
-        return nnum.astype(np.int32, copy=False)
-
     @property
     @supress_logging
     def _all_enum(self):
@@ -1046,7 +1019,7 @@ def plot_nodal_displacement(
         if isinstance(component, str):
             if component.upper() == "ALL":
                 raise ValueError(
-                    '"ALL" not allowed in this context.  Select a '
+                    '"ALL" not allowed in this context. Select a '
                     'single displacement component (e.g. "X")'
                 )
 
@@ -1156,7 +1129,7 @@ def plot_nodal_rotation(self, component, show_node_numbering=False, **kwargs):
         if isinstance(component, str):
             if component.upper() == "ALL":
                 raise ValueError(
-                    '"ALL" not allowed in this context.  Select a '
+                    '"ALL" not allowed in this context. Select a '
                     'single component (e.g. "X")'
                 )
 
@@ -1293,7 +1266,7 @@ def plot_element_displacement(
         """
         if component.upper() == "ALL":
             raise ValueError(
-                '"ALL" not allowed in this context.  Select a '
+                '"ALL" not allowed in this context. Select a '
                 'single displacement component (e.g. "X" or "NORM")'
             )
 
@@ -1364,6 +1337,8 @@ def element_stress(self, component, option="AVG") -> np.ndarray:
                 0.        ,  0.        ])
 
         """
+        if not isinstance(component, str):
+            component = str(component)
         component = elem_check_inputs(component, option, STRESS_TYPES)
         return self.element_values("S", component, option)
 
@@ -2119,8 +2094,6 @@ def nodal_total_component_strain(self, component) -> np.ndarray:
         array([   1,    2,    3, ..., 7215, 7216, 7217], dtype=int32)
 
         """
-        if isinstance(component, int):
-            component = str(component)
         component = check_comp(component, COMPONENT_STRESS_TYPE)
         return self.nodal_values("EPTO", component)
 
@@ -2497,8 +2470,6 @@ def nodal_elastic_component_strain(self, component) -> np.ndarray:
         array([   1,    2,    3, ..., 7215, 7216, 7217], dtype=int32)
 
         """
-        if isinstance(component, int):
-            component = str(component)
         component = check_comp(component, COMPONENT_STRESS_TYPE)
         return self.nodal_values("EPEL", component)
 
@@ -2838,7 +2809,7 @@ def plot_nodal_elastic_eqv_strain(self, show_node_numbering=False, **kwargs):
         """
         scalars = self.nodal_elastic_eqv_strain()
         kwargs.setdefault(
-            "scalar_bar_args", {"title": "Elastic Nodal\n Equivalent Strain"}
+            "scalar_bar_args", {"title": "Elastic Nodal\nEquivalent Strain"}
         )
         return self._plot_point_scalars(
             scalars, show_node_numbering=show_node_numbering, **kwargs
@@ -2878,8 +2849,6 @@ def nodal_plastic_component_strain(self, component) -> np.ndarray:
         array([   1,    2,    3, ..., 7215, 7216, 7217], dtype=int32)
 
         """
-        if isinstance(component, int):
-            component = str(component)
         component = check_comp(component, COMPONENT_STRESS_TYPE)
         return self.nodal_values("EPPL", component)
 
@@ -3221,7 +3190,7 @@ def plot_nodal_plastic_eqv_strain(self, show_node_numbering=False, **kwargs):
         """
         scalars = self.nodal_plastic_eqv_strain()
         kwargs.setdefault(
-            "scalar_bar_args", {"title": "Plastic Nodal\n Equivalent Strain"}
+            "scalar_bar_args", {"title": "Plastic Nodal\nEquivalent Strain"}
         )
         return self._plot_point_scalars(
             scalars, show_node_numbering=show_node_numbering, **kwargs
@@ -3262,8 +3231,6 @@ def nodal_thermal_component_strain(self, component) -> np.ndarray:
         array([   1,    2,    3, ..., 7215, 7216, 7217], dtype=int32)
 
         """
-        if isinstance(component, int):
-            component = str(component)
         component = check_comp(component, COMPONENT_STRESS_TYPE)
         return self.nodal_values("EPTH", component)
 
@@ -3424,7 +3391,7 @@ def nodal_thermal_strain_intensity(self) -> np.ndarray:
 
         Equivalent MAPDL command:
 
-        * ``PRNSOL, EPTH, PRIN``
+        * ``PRNSOL, EPTH, INT``
 
         Returns
         -------
@@ -3611,7 +3578,7 @@ def plot_nodal_thermal_eqv_strain(self, show_node_numbering=False, **kwargs):
         """
         scalars = self.nodal_thermal_eqv_strain()
         kwargs.setdefault(
-            "scalar_bar_args", {"title": "Thermal Nodal\n Equivalent Strain"}
+            "scalar_bar_args", {"title": "Thermal Nodal\nEquivalent Strain"}
         )
         return self._plot_point_scalars(
             scalars, show_node_numbering=show_node_numbering, **kwargs
@@ -3702,7 +3669,7 @@ def plot_nodal_contact_friction_stress(self, show_node_numbering=False, **kwargs
 
         """
         kwargs.setdefault(
-            "scalar_bar_args", {"title": "Nodal Contact\n Friction Stress"}
+            "scalar_bar_args", {"title": "Nodal Contact\nFriction Stress"}
         )
         return self._plot_point_scalars(
             self.nodal_contact_friction_stress(),