fix: change eV/A to eV/Å for dp test (#4978)

change the unit eV/A to eV/Å for dp test

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

- Bug Fixes
- Standardized unit display from eV/A and eV/A^2 to eV/Å and eV/Å^2
across all distance-related logs. Affects force metrics (MAE/RMSE,
weighted, per-atom), Hessian, WFC, polarizability, dipole, and
corresponding system-average summaries. Improves readability, aligns
with scientific notation, and removes ambiguity in reported units. No
changes to calculations or results—only log message text was updated.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: OutisLi

deepmd/entrypoints/test.py

@@ -511,18 +511,18 @@ def test_ener(
         dict_to_return["rmse_e"] = (rmse_e, energy.size)
         dict_to_return["rmse_ea"] = (rmse_ea, energy.size)
     if not out_put_spin and find_force == 1:
-        log.info(f"Force  MAE         : {mae_f:e} eV/A")
-        log.info(f"Force  RMSE        : {rmse_f:e} eV/A")
+        log.info(f"Force  MAE         : {mae_f:e} eV/Å")
+        log.info(f"Force  RMSE        : {rmse_f:e} eV/Å")
         dict_to_return["mae_f"] = (mae_f, size_f)
         dict_to_return["rmse_f"] = (rmse_f, size_f)
         if find_atom_pref == 1:
-            log.info(f"Force weighted MAE : {mae_fw:e} eV/A")
-            log.info(f"Force weighted RMSE: {rmse_fw:e} eV/A")
+            log.info(f"Force weighted MAE : {mae_fw:e} eV/Å")
+            log.info(f"Force weighted RMSE: {rmse_fw:e} eV/Å")
             dict_to_return["mae_fw"] = (mae_fw, weight_sum)
             dict_to_return["rmse_fw"] = (rmse_fw, weight_sum)
     if out_put_spin and find_force == 1:
-        log.info(f"Force atom MAE      : {mae_fr:e} eV/A")
-        log.info(f"Force atom RMSE     : {rmse_fr:e} eV/A")
+        log.info(f"Force atom MAE      : {mae_fr:e} eV/Å")
+        log.info(f"Force atom RMSE     : {rmse_fr:e} eV/Å")
         dict_to_return["mae_fr"] = (mae_fr, force_r.size)
         dict_to_return["rmse_fr"] = (rmse_fr, force_r.size)
     if out_put_spin and find_force_mag == 1:
@@ -543,8 +543,8 @@ def test_ener(
         log.info(f"Atomic ener MAE    : {mae_ae:e} eV")
         log.info(f"Atomic ener RMSE   : {rmse_ae:e} eV")
     if dp.has_hessian:
-        log.info(f"Hessian MAE        : {mae_h:e} eV/A^2")
-        log.info(f"Hessian RMSE       : {rmse_h:e} eV/A^2")
+        log.info(f"Hessian MAE        : {mae_h:e} eV/Å^2")
+        log.info(f"Hessian RMSE       : {rmse_h:e} eV/Å^2")
         dict_to_return["mae_h"] = (mae_h, hessian.size)
         dict_to_return["rmse_h"] = (rmse_h, hessian.size)
 
@@ -663,24 +663,24 @@ def print_ener_sys_avg(avg: dict[str, float]) -> None:
     log.info(f"Energy MAE/Natoms  : {avg['mae_ea']:e} eV")
     log.info(f"Energy RMSE/Natoms : {avg['rmse_ea']:e} eV")
     if "rmse_f" in avg:
-        log.info(f"Force  MAE         : {avg['mae_f']:e} eV/A")
-        log.info(f"Force  RMSE        : {avg['rmse_f']:e} eV/A")
+        log.info(f"Force  MAE         : {avg['mae_f']:e} eV/Å")
+        log.info(f"Force  RMSE        : {avg['rmse_f']:e} eV/Å")
         if "rmse_fw" in avg:
-            log.info(f"Force weighted MAE : {avg['mae_fw']:e} eV/A")
-            log.info(f"Force weighted RMSE: {avg['rmse_fw']:e} eV/A")
+            log.info(f"Force weighted MAE : {avg['mae_fw']:e} eV/Å")
+            log.info(f"Force weighted RMSE: {avg['rmse_fw']:e} eV/Å")
     else:
-        log.info(f"Force atom MAE      : {avg['mae_fr']:e} eV/A")
+        log.info(f"Force atom MAE      : {avg['mae_fr']:e} eV/Å")
         log.info(f"Force spin MAE      : {avg['mae_fm']:e} eV/uB")
-        log.info(f"Force atom RMSE     : {avg['rmse_fr']:e} eV/A")
+        log.info(f"Force atom RMSE     : {avg['rmse_fr']:e} eV/Å")
         log.info(f"Force spin RMSE     : {avg['rmse_fm']:e} eV/uB")
     if "rmse_v" in avg:
         log.info(f"Virial MAE         : {avg['mae_v']:e} eV")
         log.info(f"Virial RMSE        : {avg['rmse_v']:e} eV")
         log.info(f"Virial MAE/Natoms  : {avg['mae_va']:e} eV")
         log.info(f"Virial RMSE/Natoms : {avg['rmse_va']:e} eV")
     if "rmse_h" in avg:
-        log.info(f"Hessian MAE         : {avg['mae_h']:e} eV/A^2")
-        log.info(f"Hessian RMSE        : {avg['rmse_h']:e} eV/A^2")
+        log.info(f"Hessian MAE         : {avg['mae_h']:e} eV/Å^2")
+        log.info(f"Hessian RMSE        : {avg['rmse_h']:e} eV/Å^2")
 
 
 def test_dos(
@@ -1070,7 +1070,7 @@ def test_wfc(
     rmse_f = rmse(wfc - test_data["wfc"][:numb_test])
 
     log.info("# number of test data : {numb_test:d} ")
-    log.info("WFC  RMSE : {rmse_f:e} eV/A")
+    log.info("WFC  RMSE : {rmse_f:e} eV/Å")
 
     if detail_file is not None:
         detail_path = Path(detail_file)
@@ -1097,7 +1097,7 @@ def print_wfc_sys_avg(avg: dict) -> None:
     avg : np.ndarray
         array with summaries
     """
-    log.info(f"WFC  RMSE : {avg['rmse']:e} eV/A")
+    log.info(f"WFC  RMSE : {avg['rmse']:e} eV/Å")
 
 
 def test_polar(
@@ -1239,7 +1239,7 @@ def print_polar_sys_avg(avg: dict) -> None:
     avg : np.ndarray
         array with summaries
     """
-    log.info(f"Polarizability  RMSE : {avg['rmse']:e} eV/A")
+    log.info(f"Polarizability  RMSE : {avg['rmse']:e} eV/Å")
 
 
 def test_dipole(
@@ -1353,4 +1353,4 @@ def print_dipole_sys_avg(avg: dict) -> None:
     avg : np.ndarray
         array with summaries
     """
-    log.info(f"Dipole  RMSE         : {avg['rmse']:e} eV/A")
+    log.info(f"Dipole  RMSE         : {avg['rmse']:e} eV/Å")