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import io
import math
import pytest
from django import forms
from django.core.files.uploadhandler import (
MemoryFileUploadHandler, TemporaryFileUploadHandler
)
from django.http.request import RawPostDataException
from django.test import TestCase
from rest_framework.exceptions import ParseError
from rest_framework.parsers import (
FileUploadParser, FormParser, JSONParser, MultiPartParser
)
from rest_framework.request import Request
from rest_framework.test import APIRequestFactory
class Form(forms.Form):
field1 = forms.CharField(max_length=3)
field2 = forms.CharField()
class TestFormParser(TestCase):
def setUp(self):
self.string = "field1=abc&field2=defghijk"
def test_parse(self):
""" Make sure the `QueryDict` works OK """
parser = FormParser()
stream = io.StringIO(self.string)
data = parser.parse(stream)
assert Form(data).is_valid() is True
class TestFileUploadParser(TestCase):
def setUp(self):
class MockRequest:
pass
self.stream = io.BytesIO(b"Test text file")
request = MockRequest()
request.upload_handlers = (MemoryFileUploadHandler(),)
request.META = {
'HTTP_CONTENT_DISPOSITION': 'Content-Disposition: inline; filename=file.txt',
'HTTP_CONTENT_LENGTH': 14,
}
self.parser_context = {'request': request, 'kwargs': {}}
def test_parse(self):
"""
Parse raw file upload.
"""
parser = FileUploadParser()
self.stream.seek(0)
data_and_files = parser.parse(self.stream, None, self.parser_context)
file_obj = data_and_files.files['file']
assert file_obj.size == 14
def test_parse_missing_filename(self):
"""
Parse raw file upload when filename is missing.
"""
parser = FileUploadParser()
self.stream.seek(0)
self.parser_context['request'].META['HTTP_CONTENT_DISPOSITION'] = ''
with pytest.raises(ParseError) as excinfo:
parser.parse(self.stream, None, self.parser_context)
assert str(excinfo.value) == 'Missing filename. Request should include a Content-Disposition header with a filename parameter.'
def test_parse_missing_filename_multiple_upload_handlers(self):
"""
Parse raw file upload with multiple handlers when filename is missing.
Regression test for #2109.
"""
parser = FileUploadParser()
self.stream.seek(0)
self.parser_context['request'].upload_handlers = (
MemoryFileUploadHandler(),
MemoryFileUploadHandler()
)
self.parser_context['request'].META['HTTP_CONTENT_DISPOSITION'] = ''
with pytest.raises(ParseError) as excinfo:
parser.parse(self.stream, None, self.parser_context)
assert str(excinfo.value) == 'Missing filename. Request should include a Content-Disposition header with a filename parameter.'
def test_parse_missing_filename_large_file(self):
"""
Parse raw file upload when filename is missing with TemporaryFileUploadHandler.
"""
parser = FileUploadParser()
self.stream.seek(0)
self.parser_context['request'].upload_handlers = (
TemporaryFileUploadHandler(),
)
self.parser_context['request'].META['HTTP_CONTENT_DISPOSITION'] = ''
with pytest.raises(ParseError) as excinfo:
parser.parse(self.stream, None, self.parser_context)
assert str(excinfo.value) == 'Missing filename. Request should include a Content-Disposition header with a filename parameter.'
def test_get_filename(self):
parser = FileUploadParser()
filename = parser.get_filename(self.stream, None, self.parser_context)
assert filename == 'file.txt'
def test_get_encoded_filename(self):
parser = FileUploadParser()
self.__replace_content_disposition('inline; filename*=utf-8\'\'ÀĥƦ.txt')
filename = parser.get_filename(self.stream, None, self.parser_context)
assert filename == 'ÀĥƦ.txt'
self.__replace_content_disposition('inline; filename=fallback.txt; filename*=utf-8\'\'ÀĥƦ.txt')
filename = parser.get_filename(self.stream, None, self.parser_context)
assert filename == 'ÀĥƦ.txt'
self.__replace_content_disposition('inline; filename=fallback.txt; filename*=utf-8\'en-us\'ÀĥƦ.txt')
filename = parser.get_filename(self.stream, None, self.parser_context)
assert filename == 'ÀĥƦ.txt'
def __replace_content_disposition(self, disposition):
self.parser_context['request'].META['HTTP_CONTENT_DISPOSITION'] = disposition
class TestJSONParser(TestCase):
def bytes(self, value):
return io.BytesIO(value.encode())
def test_float_strictness(self):
parser = JSONParser()
# Default to strict
for value in ['Infinity', '-Infinity', 'NaN']:
with pytest.raises(ParseError):
parser.parse(self.bytes(value))
parser.strict = False
assert parser.parse(self.bytes('Infinity')) == float('inf')
assert parser.parse(self.bytes('-Infinity')) == float('-inf')
assert math.isnan(parser.parse(self.bytes('NaN')))
class TestPOSTAccessed(TestCase):
def setUp(self):
self.factory = APIRequestFactory()
def test_post_accessed_in_post_method(self):
django_request = self.factory.post('/', {'foo': 'bar'})
request = Request(django_request, parsers=[FormParser(), MultiPartParser()])
django_request.POST
assert request.POST == {'foo': ['bar']}
assert request.data == {'foo': ['bar']}
def test_post_accessed_in_post_method_with_json_parser(self):
django_request = self.factory.post('/', {'foo': 'bar'})
request = Request(django_request, parsers=[JSONParser()])
django_request.POST
assert request.POST == {}
assert request.data == {}
def test_post_accessed_in_put_method(self):
django_request = self.factory.put('/', {'foo': 'bar'})
request = Request(django_request, parsers=[FormParser(), MultiPartParser()])
django_request.POST
assert request.POST == {'foo': ['bar']}
assert request.data == {'foo': ['bar']}
def test_request_read_before_parsing(self):
django_request = self.factory.put('/', {'foo': 'bar'})
request = Request(django_request, parsers=[FormParser(), MultiPartParser()])
django_request.read()
with pytest.raises(RawPostDataException):
request.POST
with pytest.raises(RawPostDataException):
request.POST
request.data
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