Adapt to changes in zope.configuration 4.4.

The refactoring of exception nesting there breaks the wrongly imported ConfigurationError here.

CHANGES.rst

@@ -9,6 +9,8 @@ CHANGES
 
 - Drop support for Python 3.4.
 
+- Adapt to changes in ``zope.configuration >= 4.4``.
+
 
 5.1.0 (2018-10-22)
 ==================

setup.py

@@ -87,7 +87,7 @@ def read(*rnames):
           "zope.browserpage >= 3.10.1",
           "zope.browsermenu",
           "zope.component",
-          "zope.configuration >= 4.1.0",
+          "zope.configuration >= 4.4.0",
           "zope.datetime",
           "zope.exceptions",
           "zope.i18n",

src/zope/app/form/browser/form.rst

@@ -177,8 +177,7 @@ Now, if I do not specify my own template, and my class does not overwrite the
 
   >>> sys.modules['form'].NewDataHandler = NewDataHandler
 
-  >>> try:
-  ...   xmlconfig.string('''
+  >>> xmlconfig.string('''
   ...     <configure
   ...         xmlns:browser="http://namespaces.zope.org/browser"
   ...         i18n_domain="zope">
@@ -194,10 +193,11 @@ Now, if I do not specify my own template, and my class does not overwrite the
   ...
   ...     </configure>
   ...    ''', context)
-  ... except xmlconfig.ConfigurationError as e:
-  ...   print(e)
-  You must specify a class that implements `getData()` and `setData()`, if you do not overwrite `update()`.
+  Traceback (most recent call last):
+      ...
+  ZopeXMLConfigurationError: You must specify a class that implements `getData()` and `setData()`, if you do not overwrite `update()`.
       File "<string>", line 6.6
+      zope.configuration.exceptions.ConfigurationError
 
 Now we need to clean up afterwards.
 

src/zope/app/form/browser/metaconfigure.py

@@ -23,6 +23,7 @@
 from zope.security.checker import CheckerPublic
 from zope.interface import implementedBy
 from zope.configuration.exceptions import ConfigurationError
+from zope.configuration.xmlconfig import ZopeXMLConfigurationError
 
 from zope.browser.interfaces import IAdding
 from zope.schema import getFieldNamesInOrder
@@ -113,7 +114,7 @@ def _normalize(self):
         if self.template is not None:
             self.template = os.path.abspath(str(self.template))
             if not os.path.isfile(self.template):
-                raise ConfigurationError("No such file", self.template)
+                raise ZopeXMLConfigurationError("No such file", self.template)
         else:
             self.template = self.default_template
 
@@ -286,9 +287,10 @@ def __init__(self, _context, **kwargs):
         attrs = self.class_.__dict__.keys()
         if 'template' not in kwargs.keys() and 'update' not in attrs and \
                ('getData' not in attrs or 'setData' not in attrs):
-            raise ConfigurationError(
+            raise ZopeXMLConfigurationError(
                 "You must specify a class that implements `getData()` "
-                "and `setData()`, if you do not overwrite `update()`.")
+                "and `setData()`, if you do not overwrite `update()`.",
+                ConfigurationError())
 
 
 class SubeditFormDirective(EditFormDirectiveBase):

src/zope/app/form/browser/tests/test_form.py

@@ -33,8 +33,6 @@
 checker = renormalizing.RENormalizing([
     (re.compile("u('.*?')"), r"\1"),
     (re.compile('u(".*?")'), r"\1"),
-    # Python 3 adds module name to exceptions.
-    (re.compile('zope.configuration.xmlconfig.ZopeXMLConfigurationError'), 'ZopeXMLConfigurationError'),
 ])
 
 
@@ -47,7 +45,8 @@ def test_suite():
     return unittest.TestSuite((
         doctest.DocFileSuite('../form.rst',
                              setUp=setUp, tearDown=testing.tearDown,
-                             optionflags=doctest.NORMALIZE_WHITESPACE),
+                             optionflags=doctest.NORMALIZE_WHITESPACE
+                             | doctest.IGNORE_EXCEPTION_DETAIL),
         ))
 
 if __name__ == '__main__':