from datetime import date, datetime, timedelta from decimal import Decimal from uuid import uuid4 import pytest from django.test import TestCase from django.utils.timezone import utc from rest_framework.compat import coreapi from rest_framework.utils.encoders import JSONEncoder class MockList(object): def tolist(self): return [1, 2, 3] class JSONEncoderTests(TestCase): """ Tests the JSONEncoder method """ def setUp(self): self.encoder = JSONEncoder() def test_encode_decimal(self): """ Tests encoding a decimal """ d = Decimal(3.14) assert self.encoder.default(d) == float(d) def test_encode_datetime(self): """ Tests encoding a datetime object """ current_time = datetime.now() assert self.encoder.default(current_time) == current_time.isoformat() current_time_utc = current_time.replace(tzinfo=utc) assert self.encoder.default(current_time_utc) == current_time.isoformat() + 'Z' def test_encode_time(self): """ Tests encoding a timezone """ current_time = datetime.now().time() assert self.encoder.default(current_time) == current_time.isoformat()[:12] def test_encode_time_tz(self): """ Tests encoding a timezone aware timestamp """ current_time = datetime.now().time() current_time = current_time.replace(tzinfo=utc) with pytest.raises(ValueError): self.encoder.default(current_time) def test_encode_date(self): """ Tests encoding a date object """ current_date = date.today() assert self.encoder.default(current_date) == current_date.isoformat() def test_encode_timedelta(self): """ Tests encoding a timedelta object """ delta = timedelta(hours=1) assert self.encoder.default(delta) == str(delta.total_seconds()) def test_encode_uuid(self): """ Tests encoding a UUID object """ unique_id = uuid4() assert self.encoder.default(unique_id) == str(unique_id) def test_encode_coreapi_raises_error(self): """ Tests encoding a coreapi objects raises proper error """ with pytest.raises(RuntimeError): self.encoder.default(coreapi.Document()) with pytest.raises(RuntimeError): self.encoder.default(coreapi.Error()) def test_encode_object_with_tolist(self): """ Tests encoding a object with tolist method """ foo = MockList() assert self.encoder.default(foo) == [1, 2, 3]