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+Testing the doctest extension
+=============================
+
+Simple doctest blocks
+---------------------
+
+>>> 1+1
+2
+>>> 1/0
+Traceback (most recent call last):
+ ...
+ZeroDivisionError: integer division or modulo by zero
+
+
+Special directives
+------------------
+
+* doctest
+
+ .. doctest::
+
+ >>> 1+1
+ 2
+ >>> 1/0
+ Traceback (most recent call last):
+ ...
+ ZeroDivisionError: integer division or modulo by zero
+
+* testcode/testoutput
+
+ .. testcode::
+
+ print(1+1)
+
+ .. testoutput::
+
+ 2
+
+ .. testcode::
+
+ 1/0
+
+ .. testoutput::
+
+ Traceback (most recent call last):
+ ...
+ ZeroDivisionError: integer division or modulo by zero
+
+* testsetup
+
+ .. testsetup:: *
+
+ def squared(x):
+ return x * x
+
+ .. doctest::
+
+ >>> squared(2)
+ 4
+
+ .. testcode::
+
+ print(squared(2))
+
+ .. testoutput::
+
+ 4
+
+ >>> squared(2)
+ 4
+
+* options for doctest/testcode/testoutput blocks
+
+ .. testcode::
+ :hide:
+
+ print('Output text.')
+
+ .. testoutput::
+ :hide:
+ :options: +NORMALIZE_WHITESPACE
+
+ Output text.
+
+ .. doctest::
+ :pyversion: >= 2.0
+
+ >>> a = 3
+ >>> a
+ 3
+
+ .. doctest::
+ :pyversion: < 2.0
+
+ >>> a = 3
+ >>> a
+ 4
+
+* grouping
+
+ .. testsetup:: group1
+
+ def add(x, y):
+ return x + y
+
+
+ ``add`` is now known in "group1", but not in others.
+
+ .. doctest:: group1
+
+ >>> add(1, 1)
+ 2
+
+ .. doctest:: group2
+
+ >>> add(1, 1)
+ Traceback (most recent call last):
+ ...
+ NameError: name 'add' is not defined
+
+ Interleaving testcode/testoutput:
+
+ .. testcode:: group1
+
+ print(squared(3))
+
+ .. testcode:: group2
+
+ print(squared(4))
+
+ .. testoutput:: group1
+
+ 9
+
+ .. testoutput:: group2
+
+ 16
+
+
+.. testcleanup:: *
+
+ from tests import test_ext_doctest
+ test_ext_doctest.cleanup_call()
+
+non-ASCII result
+----------------
+
+>>> print('umlauts: äöü.')
+umlauts: äöü.
+>>> print('Japanese: 日本語')
+Japanese: 日本語
+
+keep control char in raw string
+-------------------------------
+
+.. doctest::
+
+ >>> print('one\ntwo')
+ one
+ two
+ >>> print(r'one\ntwo')
+ one\ntwo
+