test object can't see libraries called by script under test

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I'm testing a script that mainly consists of an object Foo, which imports a library bar.

import bar

class Foo():
    *do stuff*

f = Foo()
*do stuff*

Now I create a unittest class to test Foo.

import foo

class FooTest(unittest.TestCase):
    def setUp(self):
        self.foo = foo.Foo()
    
    *do tests*

Later, it has a line like:

bar.method(...)

This fails with 'bar not defined', but shouldn't it be imported via import foo? How do automatically load whatever is required by the script under test?

unit-testing python
1 Answers

The importer model indeed imports everything from the other file, but under the imported model name as a namespace. See an example:

so_imported.py

import json

class Test:
    def __init__(self) -> None:
        self.text = "A phrase"

so_import.py

import so_imported

class Test2:
    def __init__(self) -> None:
        self.inner = {"test": so_imported.Test().text}
        print(so_imported.json.dumps(self.inner))

Test2()

So you see the json library imported under the module's namespace ?

If you want to import everything from the imported file without any namespaces, you can use: from foo import *. Then the objects will be merged into the importer namespace.

user_1520160
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