jaredwindover / GenTests

GenTests

A module for generating tests from data with unittest

Installation:

Install using pip:

pip install gentests

Example:

The following test code will generate 10 tests:

import unittest
from gentests import gentests, vals

def my_less_than(a,b):
    '''Broken function to test'''
    return a <= b

@gentests
class TestSomething(unittest.TestCase):


    @vals([
        'val_0',
        'val_1',
        'val_2'
    ])
    def test_False(self, value):
        '''Test that fails'''
        self.assertFalse(True)

    @vals([
        'val_0',
        'val_1',
        'val_2'
    ])
    def test_True(self, value):
        '''Test that passes'''
        self.assertTrue(True)

    def name_test(original_name, left, right, result):
        '''Explicitly name our tests based on our arguments'''
        return '{0}_my_less_than_{1}_{2}_is_{3}'.format(
            original_name,
            str(left),
            str(right),
            str(result)
        )

    @vals([
        (0, 1, True),
        (0, 0, False), #Fails
        (0, 2, True),
        (2, 1, False),
    ], name=name_test) #pass optional naming function
    def test_MyLessThan(self, left, right, result):
        '''Test where some pass and some fail'''
        self.assertEqual(my_less_than(left, right), result)

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

that produce the following output:

FFFF......
======================================================================
FAIL: test_False_gentest_0 (test.TestSomething)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "C:\Users\Redirection\windoj9\Documents\repos\GenTests\gentests.py", line 17, in <lambda>
    return lambda other_self: base_func(other_self, *args)
  File "C:\Users\Redirection\windoj9\Documents\repos\GenTests\test.py", line 19, in test_False
    self.assertFalse(True)
AssertionError: True is not false

======================================================================
FAIL: test_False_gentest_1 (test.TestSomething)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "C:\Users\Redirection\windoj9\Documents\repos\GenTests\gentests.py", line 17, in <lambda>
    return lambda other_self: base_func(other_self, *args)
  File "C:\Users\Redirection\windoj9\Documents\repos\GenTests\test.py", line 19, in test_False
    self.assertFalse(True)
AssertionError: True is not false

======================================================================
FAIL: test_False_gentest_2 (test.TestSomething)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "C:\Users\Redirection\windoj9\Documents\repos\GenTests\gentests.py", line 17, in <lambda>
    return lambda other_self: base_func(other_self, *args)
  File "C:\Users\Redirection\windoj9\Documents\repos\GenTests\test.py", line 19, in test_False
    self.assertFalse(True)
AssertionError: True is not false

======================================================================
FAIL: test_MyLessThan_my_less_than_0_0_is_False (test.TestSomething)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "C:\Users\Redirection\windoj9\Documents\repos\GenTests\gentests.py", line 17, in <lambda>
    return lambda other_self: base_func(other_self, *args)
  File "C:\Users\Redirection\windoj9\Documents\repos\GenTests\test.py", line 47, in test_MyLessThan
    self.assertEqual(my_less_than(left, right), result)
AssertionError: True != False

----------------------------------------------------------------------
Ran 10 tests in 0.006s

FAILED (failures=4)