plainbox tests fail on python3.4

[Zygmunt Krynicki]

Running plainbox tests on python3.4 fails with the following traceback:

Traceback (most recent call last):
  File "setup.py", line 75, in <module>
    include_package_data=True)
  File "/usr/lib/python3.4/distutils/core.py", line 149, in setup
    dist.run_commands()
  File "/usr/lib/python3.4/distutils/dist.py", line 955, in run_commands
    self.run_command(cmd)
  File "/usr/lib/python3.4/distutils/dist.py", line 974, in run_command
    cmd_obj.run()
  File "/usr/lib/python3/dist-packages/setuptools/command/test.py", line 138, in run
    self.with_project_on_sys_path(self.run_tests)
  File "/usr/lib/python3/dist-packages/setuptools/command/test.py", line 118, in with_project_on_sys_path
    func()
  File "/usr/lib/python3/dist-packages/setuptools/command/test.py", line 164, in run_tests
    testLoader = cks
  File "/usr/lib/python3.4/unittest/main.py", line 93, in __init__
    self.runTests()
  File "/usr/lib/python3.4/unittest/main.py", line 244, in runTests
    self.result = testRunner.run(self.test)
  File "/usr/lib/python3.4/unittest/runner.py", line 168, in run
    test(result)
  File "/usr/lib/python3.4/unittest/suite.py", line 87, in __call__
    return self.run(*args, **kwds)
  File "/usr/lib/python3.4/unittest/suite.py", line 125, in run
    test(result)
  File "/usr/lib/python3.4/unittest/suite.py", line 87, in __call__
    return self.run(*args, **kwds)
  File "/usr/lib/python3.4/unittest/suite.py", line 125, in run
    test(result)
  File "/usr/lib/python3.4/unittest/suite.py", line 87, in __call__
    return self.run(*args, **kwds)
  File "/usr/lib/python3.4/unittest/suite.py", line 125, in run
    test(result)
  File "/usr/lib/python3.4/unittest/suite.py", line 87, in __call__
    return self.run(*args, **kwds)
  File "/usr/lib/python3.4/unittest/suite.py", line 130, in run
    self._removeTestAtIndex(index)
  File "/usr/lib/python3.4/unittest/suite.py", line 83, in _removeTestAtIndex
    self._removed_tests += test.countTestCases()
  File "/home/zyga/checkbox/plainbox/plainbox/testing_utils/testcases.py", line 205, in countTestCases
    return len(self.get_parameter_values())
TypeError: object of type 'generator' has no len()
Error in sys.excepthook:
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/apport_python_hook.py", line 64, in apport_excepthook
    from apport.fileutils import likely_packaged, get_recent_crashes
  File "/usr/lib/python3/dist-packages/apport/__init__.py", line 5, in <module>
    from apport.report import Report
  File "/usr/lib/python3/dist-packages/apport/report.py", line 30, in <module>
    import apport.fileutils
  File "/usr/lib/python3/dist-packages/apport/fileutils.py", line 23, in <module>
    from apport.packaging_impl import impl as packaging
  File "/usr/lib/python3/dist-packages/apport/packaging_impl.py", line 20, in <module>
    import apt
  File "/usr/lib/python3/dist-packages/apt/__init__.py", line 21, in <module>
    import apt_pkg
ImportError: No module named 'apt_pkg'

Original exception was:
Traceback (most recent call last):
  File "setup.py", line 75, in <module>
    include_package_data=True)
  File "/usr/lib/python3.4/distutils/core.py", line 149, in setup
    dist.run_commands()
  File "/usr/lib/python3.4/distutils/dist.py", line 955, in run_commands
    self.run_command(cmd)
  File "/usr/lib/python3.4/distutils/dist.py", line 974, in run_command
    cmd_obj.run()
  File "/usr/lib/python3/dist-packages/setuptools/command/test.py", line 138, in run
    self.with_project_on_sys_path(self.run_tests)
  File "/usr/lib/python3/dist-packages/setuptools/command/test.py", line 118, in with_project_on_sys_path
    func()
  File "/usr/lib/python3/dist-packages/setuptools/command/test.py", line 164, in run_tests
    testLoader = cks
  File "/usr/lib/python3.4/unittest/main.py", line 93, in __init__
    self.runTests()
  File "/usr/lib/python3.4/unittest/main.py", line 244, in runTests
    self.result = testRunner.run(self.test)
  File "/usr/lib/python3.4/unittest/runner.py", line 168, in run
    test(result)
  File "/usr/lib/python3.4/unittest/suite.py", line 87, in __call__
    return self.run(*args, **kwds)
  File "/usr/lib/python3.4/unittest/suite.py", line 125, in run
    test(result)
  File "/usr/lib/python3.4/unittest/suite.py", line 87, in __call__
    return self.run(*args, **kwds)
  File "/usr/lib/python3.4/unittest/suite.py", line 125, in run
    test(result)
  File "/usr/lib/python3.4/unittest/suite.py", line 87, in __call__
    return self.run(*args, **kwds)
  File "/usr/lib/python3.4/unittest/suite.py", line 125, in run
    test(result)
  File "/usr/lib/python3.4/unittest/suite.py", line 87, in __call__
    return self.run(*args, **kwds)
  File "/usr/lib/python3.4/unittest/suite.py", line 130, in run
    self._removeTestAtIndex(index)
  File "/usr/lib/python3.4/unittest/suite.py", line 83, in _removeTestAtIndex
    self._removed_tests += test.countTestCases()
  File "/home/zyga/checkbox/plainbox/plainbox/testing_utils/testcases.py", line 205, in countTestCases
    return len(self.get_parameter_values())
TypeError: object of type 'generator' has no len()

[Zygmunt Krynicki (zyga)]

I've fixed this locally. I'll push this via my fixes branch