AutoMap, in some scenarios, permits the same key to be added more than once.

[Christopher Ariza]

Not sure exactly when this scenario happens, but here is an example:

In [57]: a = automap.AutoMap(('a', 'b'))                                                  

In [60]: a |= ('a',)                                                                      
---------------------------------------------------------------------------
KeyError                                  Traceback (most recent call last)
<ipython-input-60-557ca4a6c5c0> in <module>
----> 1 a |= ('a',)

KeyError: 'a'

In [62]: a |= ('c',)                                                                      

In [63]: a |= ('c',)                                                                      

In [64]: a                                                                                
Out[64]: automap.AutoMap(['a', 'b', 'c', 'c'])

[Brandt Bucher]

Nice catch! This was a very tricky one that exposed a much bigger bug in the table resizing logic.

Basically, when an update required a table resize, the old entries were incorrectly inserted back into their old slots, rather than expanding to the new table size.

This is fixed in 647002c.

[Brandt Bucher]

0.0.3 is out with this fix.