Bintest is a extension for unitest, it will provide a way to run a command and assert the output.
pip install bintest- Create a file in your project: testcase.py for example
from bintest import bintest
import unittest
class MyTestCase(unittest.TestCase, bintest.BinTest):
__test__ = True
def setUp(self):
self.set_env(
env="./output", # temp dir
input="./tests_case.yml", # yml file
)
# This works
def test_simple_cat(self):
output, err = self.run_bin(name="SimpleCAT")
# two ways of test, this both will do exactly the same
self.assertEqual(output, "test\n")
# this one is more auto because is reading from the yml
self.assertOutput(name="SimpleCAT", output=output)
# This Fails
def test_simple_cat_fail(self):
output, err = self.run_bin(name="SimpleCATFail")
# this one will fail
self.assertOutput(name="SimpleCATFail", output=output)
if __name__ == "__main__":
unittest.main()- Create the config file: tests_case.yml
---
# Example test file
# required: bin, output
# everything in the middle will be passing as paramters to the binary: only the values
SimpleCAT:
bin: /bin/cat
path: /Users/artur.gomes/projects/pybintest/examples/test.txt
output: "test\n"
SimpleCATFail:
bin: /bin/cat
path: /Users/artur.gomes/projects/pybintest/examples/test.txt
output: "not test\n"In this case we are testing the cat command, using a file test.txt as argument and expecting the output
- Create the test.txt file
test- Then run:
python3 -m unittest discover -vvv- Unittest will find yout test and run it for you.
test_simple_cat (testcase.MyTestCase) ... ok
test_simple_cat_fail (testcase.MyTestCase) ... FAIL
======================================================================
FAIL: test_simple_cat_fail (testcase.MyTestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/Users/artur.gomes/projects/test_bintest/testcase.py", line 26, in test_simple_cat_fail
self.assertOutput(name="SimpleCATFail", output=output)
File "/Users/artur.gomes/Library/Caches/pypoetry/virtualenvs/test-bintest-LukI1uz2-py3.9/lib/python3.9/site-packages/bintest/bintest.py", line 34, in assertOutput
raise self.failureException(msg)
AssertionError: Error: not test
!= test
----------------------------------------------------------------------
Ran 2 tests in 0.011s
FAILED (failures=1)If this helps you consider help me to improve.