How to Run Python Instantiated Class methods

Question

Noob question on running Python file Instantiated Class Methods: I want to run the method test_method() in the class TestClass() to verify algorithm() works. How do I run this code from the python command line?

File Name: algo.py

import unittest
import numpy as np
import pandas as pd 
from datetime import datetime

def algorithm(a,b):
    c = a+b
    return c

class TestClass(unittest.TestCase):
    def test_method(self):
        a = np.array(1.1)
        b = np.array(2.2)
        algo_return = algorithm(a,b) 

        self.assertAlmostEqual(algo_return[0], 3.3)

I have attempted,

import algo
test_method = algo
TestClass = algo.TestClass()

But the third line yielded the result:

Traceback (most recent call last):
File "/Applications/Wing101.app/Contents/Resources/src/debug/tserver/_sandbox.py", line 1, in <module>
# Used internally for debug sandbox under external interpreter
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/unittest/case.py", line 191, in __init__
(self.__class__, methodName))
ValueError: no such test method in <class 'algo.TestClass'>: runTest

I am using python2.7, wings101 IDE.

I'm looking for an answer like (But this doesn't work):

import algo
TestClass.test_method()

yole · Accepted Answer · 2015-03-07 19:33:55Z

1

Add the following code to your file:

if __name__ == '__main__':
    unittest.main()

Then you'll be able to run your file simply as "python algo.py", and that will run your test.

See here for more information on using the Python unittest framework.

answered Mar 7, 2015 at 19:33

yole

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