all Python 3unittestfunction

unittest.removeHandler()

Ctrl+C handling

Removes the Ctrl+C handler installed by installHandler() and restores the previous one; it also works as a decorator for a single test.

Syntax

unittest.removeHandler()
@unittest.removeHandler
def test_x(self): ...

Used as a decorator, @unittest.removeHandler removes the handler only for the duration of one test and then restores it. A test that checks its own reaction to KeyboardInterrupt needs this: under the unittest handler the first Ctrl+C never reaches the test code. Calling it with no handler installed does nothing.

Examples

import signal
import unittest
unittest.installHandler()
print(signal.getsignal(signal.SIGINT) is signal.default_int_handler)  # → False
unittest.removeHandler()
print(signal.getsignal(signal.SIGINT) is signal.default_int_handler)  # → True

See also

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