Example on a nose test in the source code

Very simple module mymod (in file mymod.py):

def double(n):
    return 2*n

Write test function in mymod.py:

def double(n):
    return 2*n

import nose.tools as nt

def test_double():
    result = double(4)
    nt.assert_equal(result, 8)

Running

Terminal> nosetests -s mymod

makes the nose tool run all test_*() functions in mymod.py.