100% coverage for codec.py

src/zope/mimetype/codec.py

@@ -10,6 +10,7 @@
 # FOR A PARTICULAR PURPOSE.
 #
 ##############################################################################
+from __future__ import absolute_import
 
 import codecs
 import os
@@ -70,7 +71,7 @@ def addCharset(encoding, name, preferred=False):
 
 def initialize(_context):
     # if any ICodec has been registered, we're done:
-    for unused in component.getUtilitiesFor(ICodec):
+    for _ in component.getUtilitiesFor(ICodec):
         return
     _names = []
     _codecs = {}
@@ -106,7 +107,7 @@ def findPyCodecs(self):
 
         type, name, preferred = m.groups()
         if type == "Name":
-            if name in _codecs:
+            if name in _codecs: # pragma: no cover (its our datafile, this shouldn't happen)
                 raise ValueError("codec %s already exists" % name)
             _names.append(name)
             lastname = name
@@ -115,10 +116,10 @@ def findPyCodecs(self):
                 _codecs[name].preferred_alias = name.lower()
 
         elif type == "Alias" and name != "None":
-            if not lastname:
+            if not lastname: # pragma: no cover (its our datafile, this shouldn't happen)
                 raise ValueError("Parsing failed. Alias found without a name.")
             name = name.lower()
-            if name in _aliases:
+            if name in _aliases: # pragma: no cover (its our datafile, this shouldn't happen)
                 raise ValueError("Alias %s already exists." % name)
             codec = _codecs[lastname]
             codec.aliases.append(name)

src/zope/mimetype/tests/test_codec.py

@@ -0,0 +1,38 @@
+##############################################################################
+#
+# Copyright (c) 2005 Zope Foundation and Contributors.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+# -*- coding: utf-8 -*-
+"""
+Tests for codec.py.
+
+"""
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+
+import unittest
+
+from zope import component
+from zope.testing import cleanup
+
+class TestCodecInitialize(cleanup.CleanUp,
+                          unittest.TestCase):
+
+    def test_does_nothing_if_codec_registered(self):
+        from zope.mimetype.interfaces import ICodec
+        from zope.mimetype import codec
+
+        component.provideUtility(self, ICodec)
+        codec.initialize(None)
+
+        self.assertEqual(list(component.getUtilitiesFor(ICodec)),
+                         [('', self)])