Nose and nose2 alternatives

Question

I have been working my way through Learn Python 3 The Hard way by Zed Shaw and I have recently encountered a huge issue. So the book itself is outdated and examples included in the book make use of the nose module which apparently isn't supported anymore. I managed to make my way through most of these examples by tedious research, but I'm now on page 202 and Zed imports the following module from nose.tools import *which enables him to use assert(whatever that does) and I cannot for the sake of me, find an equivalent import in nose2 that would also enable that function

here's the code:

from nose2.tools import *
from ex47.game import Room

def test_room():
    gold = Room("GoldRoom",
    """This room has gold in it yo
    u can grab. There's a door to the north""")
    assert_equal(gold.name, "GoldRoom")
    assert_equal(gold.paths, {})

def test_room_paths():
    center = Room("Center", "Test room in the center.")
    north = Room("North", "Test room in the north.")
    south = Room("South", "Test room in the south.")

    center.add_paths({"north": north, "south": south})
    assert_equal(center.go("north"), north)
    assert_equal(center.go("south"), south)

def test_map():
    start = Room("Start", "you can go west and down the hole.")
    west = Room("Trees", "There are trees here, you can go east.")
    down = Room("Dungeon", "It\'s dark down here, you can go up.")
    start.add_paths({"west": west, 'down': down})
    west.add_paths({'east': start})
    down.add_paths({'up': start})

    assert_equal(start.go('west'), west)
    assert_equal(start.go('west').go('east'), start)
    assert_equal(start.go("down").go('up'), start)

If someone could please give me an alternative import in nose2 i'd be forever grateful.

"So the book itself is outdated"—a good reason not to use it. There are plenty of modern resources that would be better. — ChrisGPT was on strike, Dec 09 '22 at 17:20
"which enables him to use `assert` (whatever that does)"—[`assert`](https://docs.python.org/reference/simple_stmts.html#index-18) is available as part of Python itself. Do you mean `assert_equal()` etc.? — ChrisGPT was on strike, Dec 09 '22 at 17:22
[The built-in `unittest` module](https://docs.python.org/library/unittest.html) provides [a bunch of assert methods](https://docs.python.org/library/unittest.html#assert-methods). Or you could just `assert center.go("south") == south`. — ChrisGPT was on strike, Dec 09 '22 at 17:25

J_H · Answer 1 · 2022-12-09T17:39:01.977

I used to use nose, as it offered convenient coverage measurements.

Nowadays I author for python -m unittest *.py (using import unittest) and will often execute with pytest.

Typically my CI/CD will run it this way:

pytest --cov --cov-report=term-missing

and of course that does recursive discovery, looking for things with "test" names.

Start your file this way:

import unittest

class TestFoo(unittest.TestCase):

    def test_something(self):

The assert_equal calls become self.assertEqual calls. Or write a short utility function to connect them if you want to preserve that assert_equal spelling.

If you choose to not import unittest, you might want to define this trivial utility function:

def assert_equal(x, y):
    assert x == y

Nose and nose2 alternatives

1 Answers1