How to run a Python unit test with the Atom editor?

Installation

1. Install the Atom editor

2. Install the Script package like this:

   a) Start Atom

   b) Press Ctrl+Shift+P, type "install packages and themes" and press Enter to open the package view

   c) Search for "script" and install the package

Unit test example test.py

3. Write a unit test and save it as test.py.

   import unittest
   
   class MyTest(unittest.TestCase):
   
     def test_pass(self):
         pass
   
     def test_fail(self):
         call_method_that_does_not_exist()
   
   if __name__ == '__main__':
   unittest.main()
   

Run unit test

4. Now, press Ctrl+I to run the Python script (see documentation)

Console output

Because the unit test test_fail will fail, this will be the console output:

E.
======================================================================
ERROR: test_fail (__main__.MyTest)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/Lernkurve/Desktop/PythonDemos/a.py", line 9, in test_fail
    call_method_that_does_not_exist()
NameError: global name 'call_method_that_does_not_exist' is not defined

----------------------------------------------------------------------
Ran 2 tests in 0.000s

FAILED (errors=1)
[Finished in 0.047s]

You could use the Atom Python Test plug-in. It supports:

• Run the test under cursor
• Run all tests of a module
• Run doc tests

It also supports adding additional arguments to test execution and allows to run unitttest.TestCase too.