bitbake: Add start of bitbake regression/self testing

This adds some basic unit testing for the codeparser and data store code. Many of
the actual test cases were taken from work by Chris Larson's OE-Signatures work but with
changes to adapt to the current bitbake APIs we need to test.

I also imported CoW tests written by Holger Freyther from the original bitbake-test
codebase: http://svn.berlios.de/wsvn/bitbake/trunk/bitbake-tests/tests/ and
some tests from the doctests that were removed in commit:
http://git.openembedded.org/bitbake/commit?id=3a11c2807972bbbddffde2fa67fc380d159da467

(Bitbake rev: ae4a95780e3e08cf73c854efa8cd93379e00c4e5)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/tests/fetch.py

@@ -0,0 +1,42 @@
+#
+# BitBake Tests for the Fetcher (fetch2/)
+#
+# Copyright (C) 2012 Richard Purdie
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+
+import unittest
+import bb
+
+class URLHandle(unittest.TestCase):
+
+    datatable = {
+       "http://www.google.com/index.html" : ('http', 'www.google.com', '/index.html', '', '', {}),
+       "cvs://anoncvs@cvs.handhelds.org/cvs;module=familiar/dist/ipkg" : ('cvs', 'cvs.handhelds.org', '/cvs', 'anoncvs', '', {'module': 'familiar/dist/ipkg'}),
+       "cvs://anoncvs:anonymous@cvs.handhelds.org/cvs;tag=V0-99-81;module=familiar/dist/ipkg" : ('cvs', 'cvs.handhelds.org', '/cvs', 'anoncvs', 'anonymous', {'tag': 'V0-99-81', 'module': 'familiar/dist/ipkg'})
+    }
+
+    def test_decodeurl(self):
+        for k, v in self.datatable.items():
+            result = bb.fetch.decodeurl(k)
+            self.assertEqual(result, v)
+
+    def test_encodeurl(self):
+        for k, v in self.datatable.items():
+            result = bb.fetch.encodeurl(v)
+            self.assertEqual(result, k)
+
+
+