mirror of
https://github.com/encode/django-rest-framework.git
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93 lines
3.3 KiB
Python
93 lines
3.3 KiB
Python
from __future__ import unicode_literals
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from django.test import TestCase
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from django.utils import six
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from rest_framework import serializers
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from rest_framework.compat import BytesIO
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import datetime
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class UploadedFile(object):
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def __init__(self, file=None, created=None):
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self.file = file
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self.created = created or datetime.datetime.now()
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class UploadedFileSerializer(serializers.Serializer):
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file = serializers.FileField(required=False)
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created = serializers.DateTimeField()
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def restore_object(self, attrs, instance=None):
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if instance:
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instance.file = attrs['file']
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instance.created = attrs['created']
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return instance
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return UploadedFile(**attrs)
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class FileSerializerTests(TestCase):
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def test_create(self):
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now = datetime.datetime.now()
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file = BytesIO(six.b('stuff'))
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file.name = 'stuff.txt'
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file.size = len(file.getvalue())
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serializer = UploadedFileSerializer(data={'created': now}, files={'file': file})
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uploaded_file = UploadedFile(file=file, created=now)
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self.assertTrue(serializer.is_valid())
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self.assertEqual(serializer.object.created, uploaded_file.created)
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self.assertEqual(serializer.object.file, uploaded_file.file)
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self.assertFalse(serializer.object is uploaded_file)
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def test_creation_failure(self):
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"""
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Passing files=None should result in an ValidationError
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Regression test for:
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https://github.com/tomchristie/django-rest-framework/issues/542
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"""
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now = datetime.datetime.now()
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serializer = UploadedFileSerializer(data={'created': now})
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self.assertTrue(serializer.is_valid())
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self.assertEqual(serializer.object.created, now)
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self.assertIsNone(serializer.object.file)
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def test_remove_with_empty_string(self):
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"""
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Passing empty string as data should cause file to be removed
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Test for:
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https://github.com/tomchristie/django-rest-framework/issues/937
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"""
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now = datetime.datetime.now()
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file = BytesIO(six.b('stuff'))
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file.name = 'stuff.txt'
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file.size = len(file.getvalue())
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uploaded_file = UploadedFile(file=file, created=now)
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serializer = UploadedFileSerializer(instance=uploaded_file, data={'created': now, 'file': ''})
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self.assertTrue(serializer.is_valid())
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self.assertEqual(serializer.object.created, uploaded_file.created)
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self.assertIsNone(serializer.object.file)
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def test_validation_error_with_non_file(self):
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"""
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Passing non-files should raise a validation error.
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"""
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now = datetime.datetime.now()
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errmsg = 'No file was submitted. Check the encoding type on the form.'
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serializer = UploadedFileSerializer(data={'created': now, 'file': 'abc'})
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self.assertFalse(serializer.is_valid())
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self.assertEqual(serializer.errors, {'file': [errmsg]})
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def test_validation_with_no_data(self):
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"""
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Validation should still function when no data dictionary is provided.
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"""
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uploaded_file = BytesIO(six.b('stuff'))
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uploaded_file.name = 'stuff.txt'
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uploaded_file.size = len(uploaded_file.getvalue())
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serializer = UploadedFileSerializer(files={'file': uploaded_file})
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self.assertFalse(serializer.is_valid())
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