debugging 'duplicate test id' is hard.

[Robert Collins]

python -m testtools.run discover -l
Traceback (most recent call last):
  File "/usr/lib/python2.6/runpy.py", line 122, in _run_module_as_main
    "__main__", fname, loader, pkg_name)
  File "/usr/lib/python2.6/runpy.py", line 34, in _run_code
    exec code in run_globals
  File "/home/robertc/personal/testtools/testtools/run.py", line 410, in <module>
    main(sys.argv, sys.stdout)
  File "/home/robertc/personal/testtools/testtools/run.py", line 407, in main
    stdout=stdout)
  File "/home/robertc/personal/testtools/testtools/run.py", line 208, in __init__
    self.parseArgs(argv)
  File "/home/robertc/personal/testtools/testtools/run.py", line 247, in parseArgs
    self._do_discovery(argv[2:])
  File "/home/robertc/personal/testtools/testtools/run.py", line 366, in _do_discovery
    self.test = sorted_tests(loaded)
  File "testtools/testsuite.py", line 314, in sorted_tests
    raise ValueError('Duplicate test id detected: %s' % (test_id,))
ValueError: Duplicate test id detected: testtools.tests.test_with_with.TestExpectedException.test_annotate

Thats clear but incomplete - it will happen again once thats fixed on the next duplicate etc - we could perhaps gather them all and report them at once.

[Jonathan Lange (jml)]

https://github.com/testing-cabal/testtools/commit/fe67b1ca6ac7b07848c331aa8ab31a15dc143f67