20 lines
475 B
Python
20 lines
475 B
Python
# test_with_pytest.py
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import pytest
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from app.src.singleton import Singleton
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class Test(metaclass=Singleton):
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def __init__(self):
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pass # is a dummy test class
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def test_singleton_metaclass():
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Singleton._instances.clear()
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a = Test()
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assert 1 == len(Singleton._instances)
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b = Test()
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assert 1 == len(Singleton._instances)
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assert a is b
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del a
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assert 1 == len(Singleton._instances)
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del b
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assert 0 == len(Singleton._instances)
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