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"""Simple example using doctests.

This file just contains doctests both using plain python and IPython prompts.

All tests should be loaded by nose.

"""

from __future__ import print_function

def pyfunc():

"""Some pure python tests...

>>> pyfunc()

'pyfunc'

>>> import os

>>> 2+3

5

>>> for i in range(3):

... print(i, end=' ')

... print(i+1, end=' ')

...

0 1 1 2 2 3

"""

return 'pyfunc'

def ipfunc():

"""Some ipython tests...

In [1]: import os

In [3]: 2+3

Out[3]: 5

In [26]: for i in range(3):

....: print(i, end=' ')

....: print(i+1, end=' ')

....:

0 1 1 2 2 3

Examples that access the operating system work:

In [1]: !echo hello

hello

In [2]: !echo hello > /tmp/foo_iptest

In [3]: !cat /tmp/foo_iptest

hello

In [4]: rm -f /tmp/foo_iptest

It's OK to use '_' for the last result, but do NOT try to use IPython's

numbered history of _NN outputs, since those won't exist under the

doctest environment:

In [7]: 'hi'

Out[7]: 'hi'

In [8]: print(repr(_))

'hi'

In [7]: 3+4

Out[7]: 7

In [8]: _+3

Out[8]: 10

In [9]: ipfunc()

Out[9]: 'ipfunc'

"""

return 'ipfunc'

def ranfunc():

"""A function with some random output.

Normal examples are verified as usual:

>>> 1+3

4

But if you put '# random' in the output, it is ignored:

>>> 1+3

junk goes here... # random

>>> 1+2

again, anything goes #random

if multiline, the random mark is only needed once.

>>> 1+2

You can also put the random marker at the end:

# random

>>> 1+2

# random

.. or at the beginning.

More correct input is properly verified:

>>> ranfunc()

'ranfunc'

"""

return 'ranfunc'

def random_all():

"""A function where we ignore the output of ALL examples.

Examples:

# all-random

This mark tells the testing machinery that all subsequent examples should

be treated as random (ignoring their output). They are still executed,

so if a they raise an error, it will be detected as such, but their

output is completely ignored.

>>> 1+3

junk goes here...

>>> 1+3

klasdfj;

>>> 1+2

again, anything goes

blah...

"""

pass

def iprand():

"""Some ipython tests with random output.

In [7]: 3+4

Out[7]: 7

In [8]: print('hello')

world # random

In [9]: iprand()

Out[9]: 'iprand'

"""

return 'iprand'

def iprand_all():

"""Some ipython tests with fully random output.

# all-random

In [7]: 1

Out[7]: 99

In [8]: print('hello')

world

In [9]: iprand_all()

Out[9]: 'junk'

"""

return 'iprand_all'