Fix/issue 609 (#616)

* Handle units withs exponant such as m2 or m2kg2.

* Refactor the way to get the units.

* Add the return value description and call find_units_in_dependent_variables.

* Add a unit test for the decompose_variable_value.

* Some units are still missing from the AEDT dictionary.

_unittest/test_09_VariableManager.py

@@ -4,6 +4,7 @@
 import math
 
 from pyaedt.application.Variables import Variable
+from pyaedt.application.Variables import decompose_variable_value
 from pyaedt.generic.filesystem import Scratch
 from pyaedt.generic.general_methods import isclose
 from pyaedt.hfss import Hfss
@@ -333,3 +334,13 @@ def test_10_division(self):
 
     def test_11_delete_variable(self):
         assert self.aedtapp.variable_manager.delete_variable("Var1")
+
+    def test_12_decompose_variable_value(self):
+        assert decompose_variable_value("3.123456m") == (3.123456, "m")
+        assert decompose_variable_value("3m") == (3, "m")
+        assert decompose_variable_value("3") == (3, "")
+        assert decompose_variable_value("3.") == (3., "")
+        assert decompose_variable_value("3.123456m2") == (3.123456, "m2")
+        assert decompose_variable_value("3.123456Nm-2") == (3.123456, "Nm-2")
+        assert decompose_variable_value("3.123456kg2m2") == (3.123456, "kg2m2")
+        assert decompose_variable_value("3.123456kgm2") == (3.123456, "kgm2")

pyaedt/application/Variables.py

@@ -251,9 +251,11 @@ def decompose_variable_value(variable_value, full_variables={}):
     ----------
     variable_value : float
     full_variables : dict
+
     Returns
     -------
-
+    tuples
+        tuples made of the float value of the variable and the units exposed as a string.
     """
     # set default return values - then check for valid units
     float_value = variable_value
@@ -267,18 +269,17 @@ def decompose_variable_value(variable_value, full_variables={}):
             float_value = float(variable_value)
         except ValueError:
             # search for a valid units string at the end of the variable_value
-            loc = re.search("[a-z_A-Z]+$", variable_value)
+            loc = re.search("[a-z_A-Z]+", variable_value)
             units = _find_units_in_dependent_variables(variable_value, full_variables)
 
             if loc:
                 loc_units = loc.span()[0]
                 extract_units = variable_value[loc_units:]
-                if unit_system(extract_units):
-                    try:
-                        float_value = float(variable_value[0:loc_units])
-                        units = extract_units
-                    except ValueError:
-                        float_value = variable_value
+                try:
+                    float_value = float(variable_value[0:loc_units])
+                    units = extract_units
+                except ValueError:
+                    float_value = variable_value
 
     return float_value, units