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# ==================================================================================================================== #
# _____ _ _ __ __ _ #
# _ __ _ |_ _|__ ___ | (_)_ __ __ \ \ / /_ _ _ __ _ __ (_)_ __ __ _ #
# | '_ \| | | || |/ _ \ / _ \| | | '_ \ / _` \ \ /\ / / _` | '__| '_ \| | '_ \ / _` | #
# | |_) | |_| || | (_) | (_) | | | | | | (_| |\ V V / (_| | | | | | | | | | | (_| | #
# | .__/ \__, ||_|\___/ \___/|_|_|_| |_|\__, (_)_/\_/ \__,_|_| |_| |_|_|_| |_|\__, | #
# |_| |___/ |___/ |___/ #
# ==================================================================================================================== #
# Authors: #
# Patrick Lehmann #
# #
# License: #
# ==================================================================================================================== #
# Copyright 2025-2026 Patrick Lehmann - Bötzingen, Germany #
# #
# Licensed under the Apache License, Version 2.0 (the "License"); #
# you may not use this file except in compliance with the License. #
# You may obtain a copy of the License at #
# #
# http://www.apache.org/licenses/LICENSE-2.0 #
# #
# Unless required by applicable law or agreed to in writing, software #
# distributed under the License is distributed on an "AS IS" BASIS, #
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. #
# See the License for the specific language governing permissions and #
# limitations under the License. #
# #
# SPDX-License-Identifier: Apache-2.0 #
# ==================================================================================================================== #
#
from typing import List
from unittest import TestCase
from pyTooling.Warning import WarningCollector, Warning, CriticalWarning
from pyTooling.Warning import UnhandledExceptionException, UnhandledCriticalWarningException
if __name__ == "__main__": # pragma: no cover
print("ERROR: you called a testcase declaration file as an executable module.")
print("Use: 'python -m unittest <testcase module>'")
exit(1)
class ClassA:
_x: object
def __init__(self, x: object) -> None:
self._x = x
def methA_RaiseWarning(self) -> None:
WarningCollector.Raise(Warning("Warning from ClassA.methA_RaiseWarning"))
def methA_RaiseCriticalWarning(self) -> None:
WarningCollector.Raise(CriticalWarning("CriticalWarning from ClassA.methA_RaiseCriticalWarning"))
def methA_RaiseException(self) -> None:
WarningCollector.Raise(Exception("Exception from ClassA.methA_RaiseException"))
class ClassB:
_a: ClassA
def __init__(self, a: ClassA) -> None:
self._a = a
def methB(self) -> None:
self._a.methA_RaiseException()
class ClassC:
_b: ClassB
def __init__(self, b: ClassB) -> None:
self._b = b
def methC(self) -> None:
self._b.methB()
class Handler:
_c: ClassC
_warnings: List
def __init__(self, c: ClassC) -> None:
self._c = c
self._warnings = []
def meth(self) -> None:
with WarningCollector(self._warnings) as warning:
self._c.methC()
class NoWarningCollector(TestCase):
def test_RaiseWarning(self) -> None:
a = ClassA("none")
a.methA_RaiseWarning()
def test_RaiseCriticalWarning(self) -> None:
a = ClassA("none")
with self.assertRaises(UnhandledCriticalWarningException) as ex:
a.methA_RaiseCriticalWarning()
self.assertEqual("Unhandled Critical Warning: CriticalWarning from ClassA.methA_RaiseCriticalWarning", str(ex.exception))
def test_RaiseException(self) -> None:
a = ClassA("none")
with self.assertRaises(UnhandledExceptionException) as ex:
a.methA_RaiseException()
self.assertEqual("Unhandled Exception: Exception from ClassA.methA_RaiseException", str(ex.exception))
class WarningCollection(TestCase):
def test_WarningCollector_NoList(self) -> None:
a = ClassA("list")
with WarningCollector() as warning:
a.methA_RaiseException()
self.assertEqual(1, len(warning))
self.assertEqual("Exception from ClassA.methA_RaiseException", str(warning[0]))
def test_WarningCollector_List(self) -> None:
warnings = []
a = ClassA("list")
with WarningCollector(warnings) as warning:
a.methA_RaiseException()
self.assertEqual(1, len(warnings))
self.assertEqual("Exception from ClassA.methA_RaiseException", str(warnings[0]))
def test_WarningCollector_Print(self) -> None:
print()
message = ""
def func(warning: Warning) -> bool:
nonlocal message
message = str(warning)
print(message)
return False
a = ClassA("print")
with WarningCollector(handler=func) as warning:
a.methA_RaiseException()
self.assertEqual("Exception from ClassA.methA_RaiseException", message)
def test_WarningCollector_Abort(self) -> None:
print()
message = ""
def func(warning: Warning) -> bool:
nonlocal message
message = str(warning)
print(message)
return True
a = ClassA("abort")
with self.assertRaises(Exception) as ex:
with WarningCollector(handler=func) as warning:
a.methA_RaiseException()
self.assertEqual("Exception from ClassA.methA_RaiseException", message)
self.assertEqual("Warning: Exception from ClassA.methA_RaiseException", str(ex.exception))
class CallStack(TestCase):
def test_Level_1(self) -> None:
warnings = []
a = ClassA(1)
with WarningCollector(warnings) as warning:
a.methA_RaiseException()
self.assertEqual(1, len(warnings))
self.assertEqual("Exception from ClassA.methA_RaiseException", str(warnings[0]))
def test_Level_2(self) -> None:
warnings = []
a = ClassA(2)
b = ClassB(a)
with WarningCollector(warnings) as warning:
b.methB()
self.assertEqual(1, len(warnings))
self.assertEqual("Exception from ClassA.methA_RaiseException", str(warnings[0]))
def test_Level_3(self) -> None:
warnings = []
a = ClassA(3)
b = ClassB(a)
c = ClassC(b)
with WarningCollector(warnings) as warning:
c.methC()
self.assertEqual(1, len(warnings))
self.assertEqual("Exception from ClassA.methA_RaiseException", str(warnings[0]))
def test_Nested(self) -> None:
a = ClassA(1)
with WarningCollector() as warning1:
with WarningCollector() as warning2:
a.methA_RaiseException()
self.assertIs(warning1, warning2.Parent)
self.assertEqual(1, len(warning2))
self.assertEqual("Exception from ClassA.methA_RaiseException", str(warning2[0]))
class Catch(TestCase):
def test_Inner(self) -> None:
warnings = []
a = ClassA(3)
b = ClassB(a)
c = ClassC(b)
h = Handler(c)
with WarningCollector(warnings) as warning:
h.meth()
self.assertEqual(0, len(warnings))
self.assertEqual(1, len(h._warnings))
self.assertEqual("Exception from ClassA.methA_RaiseException", str(h._warnings[0]))
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