Fix unit test with property name sanitize.

src/Mod/Path/Gui/Resources/panels/PropertyCreate.ui

@@ -24,7 +24,7 @@
    <item row="0" column="1">
     <widget class="QLineEdit" name="propertyName">
      <property name="toolTip">
-      <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;Name of property.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+      <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;Name of property. Can only contain letters, numbers, and underscores. MixedCase names will display with spaces &amp;quot;Mixed Case&amp;quot;&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
      </property>
     </widget>
    </item>

src/Mod/Path/PathScripts/PathPropertyBag.py

@@ -22,6 +22,7 @@
 
 import FreeCAD
 import PySide
+import re
 
 __title__ = 'Generic property container to store some values.'
 __author__ = 'sliptonic (Brad Collette)'
@@ -70,7 +71,7 @@ class PropertyBag(object):
     def __sanitizePropertyName(self, name):
         if(len(name) == 0):
             return
-        clean = name[0].lower()
+        clean = name[0]
         for i in range(1, len(name)):
             if (name[i] == ' '):
                 clean += name[i + 1].upper()
@@ -96,6 +97,8 @@ class PropertyBag(object):
         groups = self.obj.CustomPropertyGroups
 
         name = self.__sanitizePropertyName(name)
+        if not re.match("^[A-Za-z0-9_]*$", name):
+            raise ValueError('Property Name can only contain letters and numbers')
 
         if not group in groups:
             groups.append(group)

src/Mod/Path/PathScripts/PathPropertyBagGui.py

@@ -22,12 +22,13 @@
 
 import FreeCAD
 import FreeCADGui
-import PathGui
+#import PathGui
 import PathScripts.PathIconViewProvider as PathIconViewProvider
 import PathScripts.PathLog as PathLog
 import PathScripts.PathPropertyBag as PathPropertyBag
 import PathScripts.PathPropertyEditor as PathPropertyEditor
 import PathScripts.PathUtil as PathUtil
+import re
 
 from PySide import QtCore, QtGui
 
@@ -153,6 +154,7 @@ class PropertyCreate(object):
         self.form.propertyEnum.textChanged.connect(self.updateUI)
 
     def updateUI(self):
+
         typeSet = True
         if self.propertyIsEnumeration():
             self.form.labelEnum.setEnabled(True)
@@ -166,7 +168,10 @@ class PropertyCreate(object):
 
         ok = self.form.buttonBox.button(QtGui.QDialogButtonBox.Ok)
 
-        if typeSet and self.propertyName() and self.propertyGroup():
+        if not re.match("^[A-Za-z0-9_]*$", self.form.propertyName.text()):
+            typeSet = False
+
+        if typeSet and self.propertyGroup():
             ok.setEnabled(True)
         else:
             ok.setEnabled(False)