fix unit tests

pyproject.toml

@@ -90,7 +90,7 @@ log_cli = true
 [tool.pylint.format]
 max-line-length = 120
 
-[tool.pylint."MESSAGES CONTROL"]
+[tool.pylint.'MESSAGES CONTROL']
 disable = '''
     missing-module-docstring,
     missing-class-docstring,

satella/instrumentation/memory/conditions.py

@@ -39,7 +39,7 @@ class ZerothSeverity(BaseCondition):
 
 
 class OperationJoin(BaseCondition):
-    __slots__ = ('conditions',)
+    __slots__ = 'conditions',
 
     _OPERATOR = lambda y, z: y and z        # pylint: disable=invalid-name
     _STARTING_VALUE = False                 # pylint: disable=invalid-name
@@ -71,7 +71,7 @@ class All(OperationJoin):
 
 class Not(BaseCondition):
     """True only if provided condition is false"""
-    __slots__ = ('condition',)
+    __slots__ = 'condition',
 
     def __init__(self, condition: BaseCondition):
         self.condition = condition
@@ -128,7 +128,7 @@ class CustomCondition(BaseCondition):
     :param callable_: callable to call upon asking whether this condition is valid. This
         should be relatively cheap to compute.
     """
-    __slots__ = ('callable',)
+    __slots__ = 'callable',
 
     def __init__(self, callable_: NoArgCallable[bool]):
         self.callable = callable_

tests/test_instrumentation/test_memory.py

@@ -22,7 +22,7 @@ class OnDemandCondition(CustomCondition):
 
 
 class TestMemory(unittest.TestCase):
-    @unittest.skipIf(sys.platform == 'PyPy', 'This will not work on PyPy')
+    @unittest.skipIf(platform.python_implementation(), 'This will not work on PyPy')
     def test_get_size_dict(self):
         a = {'aba': 'aba'}