Improve extend method in LimitedHistory to enforce memory depth #1458
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This pull request fixes #1451 , specifically to the
history.pyandtest_history.pyfiles. The most important changes include the addition of theextendmethod, and the corresponding unit tests for the new method.Changes to
axelrod/history.py:__init__method of theLimitedHistoryclass to occur after setting thememory_depthattribute.extendmethod to theLimitedHistoryclass, which extends theplaysandcoplayslists while respecting thememory_depthlimit.Changes to
axelrod/tests/unit/test_history.py:test_extendto verify the functionality of theextendmethod in theLimitedHistoryclass.memory-depthbehavior.