Method test_c_signal_dict

Lib/test/test_decimal.py:5453–5584

(self)

    @requires_extra_functionality
    def test_c_signal_dict(self):

        # SignalDict coverage
        Context = C.Context
        DefaultContext = C.DefaultContext

        InvalidOperation = C.InvalidOperation
        FloatOperation = C.FloatOperation
        DivisionByZero = C.DivisionByZero
        Overflow = C.Overflow
        Subnormal = C.Subnormal
        Underflow = C.Underflow
        Rounded = C.Rounded
        Inexact = C.Inexact
        Clamped = C.Clamped

        DecClamped = C.DecClamped
        DecInvalidOperation = C.DecInvalidOperation
        DecIEEEInvalidOperation = C.DecIEEEInvalidOperation

        def assertIsExclusivelySet(signal, signal_dict):
            for sig in signal_dict:
                if sig == signal:
                    self.assertTrue(signal_dict[sig])
                else:
                    self.assertFalse(signal_dict[sig])

        c = DefaultContext.copy()

        # Signal dict methods
        self.assertTrue(Overflow in c.traps)
        c.clear_traps()
        for k in c.traps.keys():
            c.traps[k] = True
        for v in c.traps.values():
            self.assertTrue(v)
        c.clear_traps()
        for k, v in c.traps.items():
            self.assertFalse(v)

        self.assertFalse(c.flags.get(Overflow))
        self.assertIs(c.flags.get("x"), None)
        self.assertEqual(c.flags.get("x", "y"), "y")
        self.assertRaises(TypeError, c.flags.get, "x", "y", "z")

        self.assertEqual(len(c.flags), len(c.traps))
        s = sys.getsizeof(c.flags)
        s = sys.getsizeof(c.traps)
        s = c.flags.__repr__()

        # Set flags/traps.
        c.clear_flags()
        c._flags = DecClamped
        self.assertTrue(c.flags[Clamped])

        c.clear_traps()
        c._traps = DecInvalidOperation
        self.assertTrue(c.traps[InvalidOperation])