Error finding self when using expect() in a method that doesn't belong to the Spec

[jmvrbanac]

Python Version: 3.4.5
Specter Version: 0.5.1

This seems to occur whenever an expectation is in a method that doesn't belong to the Spec. This following output doesn't really make sense, so we need to clean up this behavior so it gives a reasonable message to the developer.

Specter Output

  ∟ handles exceptions for work
      Error Traceback:
        - /home/john/.virtualenvs/project/lib/python3.4/site-packages/specter/spec.py
        ------------------
          82:         self.start()
          83:         try:
      --> 84:             types.MethodType(self.case_func, context or self)(**kwargs)
          85:         except TestIncompleteException as e:
        ------------------
        - /home/john/Repositories/project/spec/worker.py
        ------------------
          38:     def handles_exceptions_for_work(self):
          39:         worker = ExceptionWorker(None, None)
      --> 40:         run_worker_as_thread(worker)
          41: 
        ------------------
        - /home/john/Repositories/project/spec/worker.py
        ------------------
          48:         thread.join()
          49: 
      --> 50:         expect(worker.finished.is_set()).to.be_true()
        ------------------
        - /home/john/.virtualenvs/project/lib/python3.4/site-packages/specter/expect.py
        ------------------
          206:     :param caller_args: Is only used when using expecting a raised Exception
          207:     """
      --> 208:     line, module = get_module_and_line('__spec__')
          209:     src_params = ExpectParams(line, module)
        ------------------
        - /home/john/.virtualenvs/project/lib/python3.4/site-packages/specter/util.py
        ------------------
          90:         last_frame = last_frame.f_back
          91: 
      --> 92:     self = module = last_frame.f_locals['self']
          93:     # Use an attr instead of self
        ------------------
        - Error | KeyError: 'self'

[jmvrbanac]

Clarified bug after running into it a second time.