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136 lines
4.2 KiB
Python
136 lines
4.2 KiB
Python
import json
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import unittest
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from django.core.serializers.base import DeserializationError, DeserializedObject
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from django.core.serializers.json import Deserializer as JsonDeserializer
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from django.core.serializers.jsonl import Deserializer as JsonlDeserializer
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from django.core.serializers.python import Deserializer
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from django.test import SimpleTestCase
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from .models import Author
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try:
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import yaml # NOQA
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HAS_YAML = True
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except ImportError:
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HAS_YAML = False
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class TestDeserializer(SimpleTestCase):
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def setUp(self):
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self.object_list = [
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{"pk": 1, "model": "serializers.author", "fields": {"name": "Jane"}},
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{"pk": 2, "model": "serializers.author", "fields": {"name": "Joe"}},
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]
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self.deserializer = Deserializer(self.object_list)
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self.jane = Author(name="Jane", pk=1)
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self.joe = Author(name="Joe", pk=2)
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def test_deserialized_object_repr(self):
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deserial_obj = DeserializedObject(obj=self.jane)
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self.assertEqual(
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repr(deserial_obj), "<DeserializedObject: serializers.Author(pk=1)>"
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)
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def test_next_functionality(self):
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first_item = next(self.deserializer)
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self.assertEqual(first_item.object, self.jane)
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second_item = next(self.deserializer)
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self.assertEqual(second_item.object, self.joe)
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with self.assertRaises(StopIteration):
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next(self.deserializer)
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def test_invalid_model_identifier(self):
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invalid_object_list = [
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{"pk": 1, "model": "serializers.author2", "fields": {"name": "Jane"}}
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]
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self.deserializer = Deserializer(invalid_object_list)
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with self.assertRaises(DeserializationError):
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next(self.deserializer)
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deserializer = Deserializer(object_list=[])
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with self.assertRaises(StopIteration):
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next(deserializer)
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def test_custom_deserializer(self):
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class CustomDeserializer(Deserializer):
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@staticmethod
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def _get_model_from_node(model_identifier):
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return Author
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deserializer = CustomDeserializer(self.object_list)
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result = next(iter(deserializer))
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deserialized_object = result.object
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self.assertEqual(
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self.jane,
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deserialized_object,
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)
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def test_empty_object_list(self):
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deserializer = Deserializer(object_list=[])
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with self.assertRaises(StopIteration):
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next(deserializer)
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def test_json_bytes_input(self):
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test_string = json.dumps(self.object_list)
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stream = test_string.encode("utf-8")
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deserializer = JsonDeserializer(stream_or_string=stream)
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first_item = next(deserializer)
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second_item = next(deserializer)
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self.assertEqual(first_item.object, self.jane)
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self.assertEqual(second_item.object, self.joe)
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def test_jsonl_bytes_input(self):
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test_string = """
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{"pk": 1, "model": "serializers.author", "fields": {"name": "Jane"}}
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{"pk": 2, "model": "serializers.author", "fields": {"name": "Joe"}}
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{"pk": 3, "model": "serializers.author", "fields": {"name": "John"}}
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{"pk": 4, "model": "serializers.author", "fields": {"name": "Smith"}}"""
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stream = test_string.encode("utf-8")
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deserializer = JsonlDeserializer(stream_or_string=stream)
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first_item = next(deserializer)
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second_item = next(deserializer)
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self.assertEqual(first_item.object, self.jane)
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self.assertEqual(second_item.object, self.joe)
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@unittest.skipUnless(HAS_YAML, "No yaml library detected")
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def test_yaml_bytes_input(self):
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from django.core.serializers.pyyaml import Deserializer as YamlDeserializer
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test_string = """- pk: 1
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model: serializers.author
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fields:
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name: Jane
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- pk: 2
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model: serializers.author
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fields:
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name: Joe
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- pk: 3
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model: serializers.author
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fields:
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name: John
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- pk: 4
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model: serializers.author
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fields:
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name: Smith
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"""
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stream = test_string.encode("utf-8")
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deserializer = YamlDeserializer(stream_or_string=stream)
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first_item = next(deserializer)
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second_item = next(deserializer)
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self.assertEqual(first_item.object, self.jane)
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self.assertEqual(second_item.object, self.joe)
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