Improves error message when path does not exist

[kaddkaka]

When checking assert path.exists(), the output error message becomes very long. Could this be cleaned up and shortened somehow?

test source code:

import pathlib
import unittest


PATH = pathlib.Path(__file__).parent
MY_PATH = pathlib.Path("build_folder") / "tool" / "output" / "result.csv"

def test():
    assert MY_PATH.exists()


class TestClass(unittest.TestCase):

    @classmethod
    def setUpClass(cls):

        test_case_path = PATH / "build" / "testcases" / "tmp"
        cls.LOG_FILE = test_case_path / "simulation" / "test_log.txt"

    def test2(self):
        assert self.LOG_FILE.exists()

output:

_________________________________________________________________ test _________________________________________________________________

    def test():
>       assert MY_PATH.exists()
E       AssertionError: assert False
E        +  where False = <bound method Path.exists of PosixPath('build_folder/tool/output/result.csv')>()
E        +    where <bound method Path.exists of PosixPath('build_folder/tool/output/result.csv')> = PosixPath('build_folder/tool/output/result.csv').exists

test.py:9: AssertionError
___________________________________________________________ TestClass.test2 ____________________________________________________________

self = <test.TestClass testMethod=test2>

    def test2(self):
>       assert self.LOG_FILE.exists()
E       AssertionError: assert False
E        +  where False = <bound method Path.exists of PosixPath('/local/david/cs/main/build/testcases/tmp/simulation/test_log.txt')>()
E        +    where <bound method Path.exists of PosixPath('/local/david/cs/main/build/testcases/tmp/simulation/test_log.txt')> = PosixPath('/local/david/cs/main/build/testcases/tmp/simulation/test_log.txt').exists
E        +      where PosixPath('/local/david/cs/main/build/testcases/tmp/simulation/test_log.txt') = <test.TestClass testMethod=test2>.LOG_FILE

test.py:21: AssertionError

[RonnyPfannschmidt]

This is a duplicate for More clear output for bound methods

[kaddkaka]

Thanks, I guess it could also be a further improvement for pathlib, but perhaps pytest is not interested to special case every method