manifest: disallow setting the node id of an entry to None
manifest.diff() uses None as a special value to denote the absence of
a file, so setting a file node to None means you then can't trust
manifest.diff().
This should also make future manifest work slightly easier.
import unittest, sys
def main(modulename):
'''run the tests found in module, printing nothing when all tests pass'''
module = sys.modules[modulename]
suite = unittest.defaultTestLoader.loadTestsFromModule(module)
results = unittest.TestResult()
suite.run(results)
if results.errors or results.failures:
for tc, exc in results.errors:
print 'ERROR:', tc
print
sys.stdout.write(exc)
for tc, exc in results.failures:
print 'FAIL:', tc
print
sys.stdout.write(exc)
sys.exit(1)