Application: gvSIG desktop » gvSIG scripting

import decimal

from decimal import Decimal

from unittest import TestCase

from simplejson.compat import StringIO, reload_module

import simplejson as json

class TestDecimal(TestCase):

    NUMS = "1.0", "10.00", "1.1", "1234567890.1234567890", "500"

    def dumps(self, obj, **kw):

        sio = StringIO()

        json.dump(obj, sio, **kw)

        res = json.dumps(obj, **kw)

        self.assertEqual(res, sio.getvalue())

        return res

    def loads(self, s, **kw):

        sio = StringIO(s)

        res = json.loads(s, **kw)

        self.assertEqual(res, json.load(sio, **kw))

        return res

    def test_decimal_encode(self):

        for d in map(Decimal, self.NUMS):

            self.assertEqual(self.dumps(d, use_decimal=True), str(d))

    def test_decimal_decode(self):

        for s in self.NUMS:

            self.assertEqual(self.loads(s, parse_float=Decimal), Decimal(s))

    def test_stringify_key(self):

        for d in map(Decimal, self.NUMS):

            v = {d: d}

            self.assertEqual(

                self.loads(

                    self.dumps(v, use_decimal=True), parse_float=Decimal),

                {str(d): d})

    def test_decimal_roundtrip(self):

        for d in map(Decimal, self.NUMS):

            # The type might not be the same (int and Decimal) but they

            # should still compare equal.

            for v in [d, [d], {'': d}]:

                self.assertEqual(

                    self.loads(

                        self.dumps(v, use_decimal=True), parse_float=Decimal),

                    v)

    def test_decimal_defaults(self):

        d = Decimal('1.1')

        # use_decimal=True is the default

        self.assertRaises(TypeError, json.dumps, d, use_decimal=False)

        self.assertEqual('1.1', json.dumps(d))

        self.assertEqual('1.1', json.dumps(d, use_decimal=True))

        self.assertRaises(TypeError, json.dump, d, StringIO(),

                          use_decimal=False)

        sio = StringIO()

        json.dump(d, sio)

        self.assertEqual('1.1', sio.getvalue())

        sio = StringIO()

        json.dump(d, sio, use_decimal=True)

        self.assertEqual('1.1', sio.getvalue())

    def test_decimal_reload(self):

        # Simulate a subinterpreter that reloads the Python modules but not

        # the C code https://github.com/simplejson/simplejson/issues/34

        global Decimal

        Decimal = reload_module(decimal).Decimal

        import simplejson.encoder

        simplejson.encoder.Decimal = Decimal

        self.test_decimal_roundtrip()