Changed setuptools.package_index.PackageIndex.open_url to include the

url in the exception.

--HG--
branch : setuptools-0.6
extra : convert_revision : svn%3A6015fed2-1504-0410-9fe1-9d1591cc4771/sandbox/branches/setuptools-0.6%4054241

setuptools/package_index.py

@@ -581,7 +581,9 @@ class PackageIndex(Environment):
             return v
         except urllib2.URLError, v:
             if warning: self.warn(warning, v.reason)
-            else: raise DistutilsError("Download error: %s" % v.reason)
+            else:
+                raise DistutilsError("Download error for %s: %s"
+                                     % (url, v.reason))
 
     def _download_url(self, scheme, url, tmpdir):
         # Determine download filename

setuptools/tests/test_packageindex.py

+"""Package Index Tests
+"""
+# More would be better!
+
+import os, shutil, tempfile, unittest
+import pkg_resources
+import setuptools.package_index
+
+class TestPackageIndex(unittest.TestCase):
+
+    def test_bad_urls(self):
+        index = setuptools.package_index.PackageIndex()
+        url = 'http://127.0.0.1/nonesuch/test_package_index'
+        try:
+            index.open_url(url)
+        except Exception, v:
+            self.assert_(url in str(v))
+        else:
+            self.assert_(False)