Function thfunc2

Lib/test/test_decimal.py:1678–1720

(cls)

        cls.assertFalse(c1.flags[sig])

def thfunc2(cls):
    Decimal = cls.decimal.Decimal
    InvalidOperation = cls.decimal.InvalidOperation
    DivisionByZero = cls.decimal.DivisionByZero
    Overflow = cls.decimal.Overflow
    Underflow = cls.decimal.Underflow
    Inexact = cls.decimal.Inexact
    getcontext = cls.decimal.getcontext
    localcontext = cls.decimal.localcontext

    d1 = Decimal(1)
    d3 = Decimal(3)
    test1 = d1/d3

    thiscontext = getcontext()
    thiscontext.prec = 18
    test2 = d1/d3

    with localcontext() as c2:
        cls.assertTrue(c2.flags[Inexact])
        cls.assertRaises(Overflow, c2.multiply, Decimal('1e425000000'), 999)
        cls.assertTrue(c2.flags[Overflow])
        with localcontext(thiscontext) as c3:
            cls.assertTrue(c3.flags[Inexact])
            cls.assertFalse(c3.flags[Overflow])
            c3.traps[Underflow] = True
            cls.assertRaises(Underflow, c3.divide, Decimal('1e-425000000'), 999)
            cls.assertTrue(c3.flags[Underflow])
            del c3
        cls.assertFalse(c2.flags[Underflow])
        cls.assertFalse(c2.traps[Underflow])
        del c2

    cls.synchro.set()
    cls.finish2.set()

    cls.assertEqual(test1, Decimal('0.333333333333333333333333'))
    cls.assertEqual(test2, Decimal('0.333333333333333333'))

    cls.assertFalse(thiscontext.traps[Underflow])
    cls.assertTrue(thiscontext.flags[Inexact])
    for sig in Overflow, Underflow, DivisionByZero, InvalidOperation:
        cls.assertFalse(thiscontext.flags[sig])


@threading_helper.requires_working_threading()