Method test_default_context

Lib/test/test_decimal.py:4192–4231

(self)

                raise ex

    def test_default_context(self):
        DefaultContext = self.decimal.DefaultContext
        BasicContext = self.decimal.BasicContext
        ExtendedContext = self.decimal.ExtendedContext
        getcontext = self.decimal.getcontext
        setcontext = self.decimal.setcontext
        InvalidOperation = self.decimal.InvalidOperation
        DivisionByZero = self.decimal.DivisionByZero
        Overflow = self.decimal.Overflow

        self.assertEqual(BasicContext.prec, 9)
        self.assertEqual(ExtendedContext.prec, 9)

        assert_signals(self, DefaultContext, 'traps',
            [InvalidOperation, DivisionByZero, Overflow]
        )

        savecontext = getcontext().copy()
        default_context_prec = DefaultContext.prec

        ex = None
        try:
            c = getcontext()
            saveprec = c.prec

            DefaultContext.prec = 961
            c = getcontext()
            self.assertEqual(c.prec, saveprec)

            setcontext(DefaultContext)
            c = getcontext()
            self.assertIsNot(c, DefaultContext)
            self.assertEqual(c.prec, 961)
        except Exception as e:
            ex = e.__class__
        finally:
            DefaultContext.prec = default_context_prec
            setcontext(savecontext)
            if ex:
                raise ex

@requires_cdecimal
class CSpecialContexts(SpecialContexts, unittest.TestCase):