Method test_context_templates

Lib/test/test_decimal.py:4156–4190

(self)

    """Test the context templates."""

    def test_context_templates(self):
        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
        Underflow = self.decimal.Underflow
        Clamped = self.decimal.Clamped

        assert_signals(self, BasicContext, 'traps',
            [InvalidOperation, DivisionByZero, Overflow, Underflow, Clamped]
        )

        savecontext = getcontext().copy()
        basic_context_prec = BasicContext.prec
        extended_context_prec = ExtendedContext.prec

        ex = None
        try:
            BasicContext.prec = ExtendedContext.prec = 441
            for template in BasicContext, ExtendedContext:
                setcontext(template)
                c = getcontext()
                self.assertIsNot(c, template)
                self.assertEqual(c.prec, 441)
        except Exception as e:
            ex = e.__class__
        finally:
            BasicContext.prec = basic_context_prec
            ExtendedContext.prec = extended_context_prec
            setcontext(savecontext)
            if ex:
                raise ex

    def test_default_context(self):
        DefaultContext = self.decimal.DefaultContext