float fields were not able to display back string values (like in the case of validation failure)

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@18767 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Form/FormulatorPatch.py

@@ -1244,7 +1244,10 @@ class FloatWidget(TextWidget):
           original_value = value
           if input_style.find('%')>=0:
             percent=1
-            value = float(value) * 100
+            try:
+              value = float(value) * 100
+            except ValueError:
+              return value
           try :
             float_value = float(value)
             if precision:

product/ERP5Form/tests/testFields.py

@@ -106,6 +106,12 @@ class TestFloatField(unittest.TestCase):
     self.assertEquals('12.34', self.field.render("12.34"))
     self.assertEquals('not float', self.field.render("not float"))
 
+  def test_percent_style_render_string_value(self):
+    self.field.values['input_style'] = '-12.3%'
+    self.field.values['editable'] = 0
+    self.assertEquals('-12.34%', self.field.render("-0.1234"))
+    self.assertEquals('not float', self.field.render("not float"))
+
   def test_render_big_numbers(self):
     self.field.values['precision'] = 2
     self.field.values['editable'] = 0