mirror of
https://github.com/encode/django-rest-framework.git
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211 lines
7.6 KiB
Python
211 lines
7.6 KiB
Python
# """
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# ..
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# >>> from djangorestframework.parsers import FormParser
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# >>> from djangorestframework.compat import RequestFactory
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# >>> from djangorestframework.views import View
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# >>> from StringIO import StringIO
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# >>> from urllib import urlencode
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# >>> req = RequestFactory().get('/')
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# >>> some_view = View()
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# >>> some_view.request = req # Make as if this request had been dispatched
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#
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# FormParser
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# ============
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#
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# Data flatening
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# ----------------
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#
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# Here is some example data, which would eventually be sent along with a post request :
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#
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# >>> inpt = urlencode([
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# ... ('key1', 'bla1'),
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# ... ('key2', 'blo1'), ('key2', 'blo2'),
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# ... ])
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#
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# Default behaviour for :class:`parsers.FormParser`, is to return a single value for each parameter :
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#
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# >>> (data, files) = FormParser(some_view).parse(StringIO(inpt))
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# >>> data == {'key1': 'bla1', 'key2': 'blo1'}
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# True
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#
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# However, you can customize this behaviour by subclassing :class:`parsers.FormParser`, and overriding :meth:`parsers.FormParser.is_a_list` :
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#
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# >>> class MyFormParser(FormParser):
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# ...
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# ... def is_a_list(self, key, val_list):
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# ... return len(val_list) > 1
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#
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# This new parser only flattens the lists of parameters that contain a single value.
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#
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# >>> (data, files) = MyFormParser(some_view).parse(StringIO(inpt))
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# >>> data == {'key1': 'bla1', 'key2': ['blo1', 'blo2']}
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# True
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#
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# .. note:: The same functionality is available for :class:`parsers.MultiPartParser`.
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#
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# Submitting an empty list
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# --------------------------
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#
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# When submitting an empty select multiple, like this one ::
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#
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# <select multiple="multiple" name="key2"></select>
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#
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# The browsers usually strip the parameter completely. A hack to avoid this, and therefore being able to submit an empty select multiple, is to submit a value that tells the server that the list is empty ::
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#
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# <select multiple="multiple" name="key2"><option value="_empty"></select>
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#
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# :class:`parsers.FormParser` provides the server-side implementation for this hack. Considering the following posted data :
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#
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# >>> inpt = urlencode([
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# ... ('key1', 'blo1'), ('key1', '_empty'),
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# ... ('key2', '_empty'),
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# ... ])
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#
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# :class:`parsers.FormParser` strips the values ``_empty`` from all the lists.
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#
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# >>> (data, files) = MyFormParser(some_view).parse(StringIO(inpt))
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# >>> data == {'key1': 'blo1'}
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# True
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#
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# Oh ... but wait a second, the parameter ``key2`` isn't even supposed to be a list, so the parser just stripped it.
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#
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# >>> class MyFormParser(FormParser):
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# ...
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# ... def is_a_list(self, key, val_list):
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# ... return key == 'key2'
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# ...
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# >>> (data, files) = MyFormParser(some_view).parse(StringIO(inpt))
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# >>> data == {'key1': 'blo1', 'key2': []}
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# True
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#
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# Better like that. Note that you can configure something else than ``_empty`` for the empty value by setting :attr:`parsers.FormParser.EMPTY_VALUE`.
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# """
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# import httplib, mimetypes
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# from tempfile import TemporaryFile
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# from django.test import TestCase
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# from djangorestframework.compat import RequestFactory
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# from djangorestframework.parsers import MultiPartParser
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# from djangorestframework.views import View
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# from StringIO import StringIO
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#
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# def encode_multipart_formdata(fields, files):
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# """For testing multipart parser.
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# fields is a sequence of (name, value) elements for regular form fields.
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# files is a sequence of (name, filename, value) elements for data to be uploaded as files
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# Return (content_type, body)."""
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# BOUNDARY = '----------ThIs_Is_tHe_bouNdaRY_$'
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# CRLF = '\r\n'
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# L = []
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# for (key, value) in fields:
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# L.append('--' + BOUNDARY)
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# L.append('Content-Disposition: form-data; name="%s"' % key)
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# L.append('')
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# L.append(value)
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# for (key, filename, value) in files:
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# L.append('--' + BOUNDARY)
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# L.append('Content-Disposition: form-data; name="%s"; filename="%s"' % (key, filename))
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# L.append('Content-Type: %s' % get_content_type(filename))
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# L.append('')
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# L.append(value)
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# L.append('--' + BOUNDARY + '--')
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# L.append('')
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# body = CRLF.join(L)
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# content_type = 'multipart/form-data; boundary=%s' % BOUNDARY
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# return content_type, body
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#
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# def get_content_type(filename):
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# return mimetypes.guess_type(filename)[0] or 'application/octet-stream'
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#
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#class TestMultiPartParser(TestCase):
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# def setUp(self):
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# self.req = RequestFactory()
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# self.content_type, self.body = encode_multipart_formdata([('key1', 'val1'), ('key1', 'val2')],
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# [('file1', 'pic.jpg', 'blablabla'), ('file1', 't.txt', 'blobloblo')])
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#
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# def test_multipartparser(self):
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# """Ensure that MultiPartParser can parse multipart/form-data that contains a mix of several files and parameters."""
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# post_req = RequestFactory().post('/', self.body, content_type=self.content_type)
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# view = View()
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# view.request = post_req
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# (data, files) = MultiPartParser(view).parse(StringIO(self.body))
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# self.assertEqual(data['key1'], 'val1')
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# self.assertEqual(files['file1'].read(), 'blablabla')
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from StringIO import StringIO
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from cgi import parse_qs
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from django import forms
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from django.test import TestCase
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from djangorestframework.parsers import FormParser
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from djangorestframework.parsers import XMLParser
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import datetime
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class Form(forms.Form):
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field1 = forms.CharField(max_length=3)
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field2 = forms.CharField()
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class TestFormParser(TestCase):
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def setUp(self):
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self.string = "field1=abc&field2=defghijk"
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def test_parse(self):
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""" Make sure the `QueryDict` works OK """
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parser = FormParser(None)
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stream = StringIO(self.string)
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(data, files) = parser.parse(stream)
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self.assertEqual(Form(data).is_valid(), True)
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class TestXMLParser(TestCase):
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def setUp(self):
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self._input = StringIO(
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'<?xml version="1.0" encoding="utf-8"?>'
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'<root>'
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'<field_a>121.0</field_a>'
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'<field_b>dasd</field_b>'
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'<field_c></field_c>'
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'<field_d>2011-12-25 12:45:00</field_d>'
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'</root>'
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)
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self._data = {
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'field_a': 121,
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'field_b': 'dasd',
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'field_c': None,
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'field_d': datetime.datetime(2011, 12, 25, 12, 45, 00)
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}
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self._complex_data_input = StringIO(
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'<?xml version="1.0" encoding="utf-8"?>'
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'<root>'
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'<creation_date>2011-12-25 12:45:00</creation_date>'
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'<sub_data_list>'
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'<list-item><sub_id>1</sub_id><sub_name>first</sub_name></list-item>'
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'<list-item><sub_id>2</sub_id><sub_name>second</sub_name></list-item>'
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'</sub_data_list>'
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'<name>name</name>'
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'</root>'
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)
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self._complex_data = {
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"creation_date": datetime.datetime(2011, 12, 25, 12, 45, 00),
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"name": "name",
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"sub_data_list": [
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{
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"sub_id": 1,
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"sub_name": "first"
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},
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{
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"sub_id": 2,
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"sub_name": "second"
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}
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]
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}
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def test_parse(self):
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parser = XMLParser(None)
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(data, files) = parser.parse(self._input)
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self.assertEqual(data, self._data)
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def test_complex_data_parse(self):
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parser = XMLParser(None)
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(data, files) = parser.parse(self._complex_data_input)
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self.assertEqual(data, self._complex_data)
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