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Werkzeug and utf-8 testing client

Here is the code. When I submit both fields, it fails.

import unittest

class UnicodeTestCase(unittest.TestCase):
    def test_unicode(self):
        from cStringIO import StringIO
        from flask import Flask, request

        app = Flask(__name__)
        app.config['TESTING'] = True

        @app.route('/', methods=["POST"])
        def test_view():
            print request.values, request.files
            return "OK"

        file = (StringIO("0" * 1000), "filename.txt")
        string = u"∆_∆"

        client = app.test_client(use_cookies=False)
        self.assertEquals(200, client.post('/', data={'file': file}).status_code)
        self.assertEquals(200, client.post('/', data={'string': string}).status_code)
        self.assertEquals(200, client.post('/', data={'file': file, 'string': string}).status_code)

In the last statement, he fails:

Error
Traceback (most recent call last):
  File "/Users/user1/tests/test_uni.py", line 108, in test_unicode
    self.assertEquals(200, client.post('/', data={'file': file, 'string': string}).status_code)
  File "/Users/user1/.virtualenvs/test/lib/python2.7/site-packages/werkzeug/test.py", line 771, in post
    return self.open(*args, **kw)
  File "/Users/user1/.virtualenvs/test/lib/python2.7/site-packages/flask/testing.py", line 108, in open
    follow_redirects=follow_redirects)
  File "/Users/user1/.virtualenvs/test/lib/python2.7/site-packages/werkzeug/test.py", line 725, in open
    environ = args[0].get_environ()
  File "/Users/user1/.virtualenvs/test/lib/python2.7/site-packages/werkzeug/test.py", line 535, in get_environ
    stream_encode_multipart(values, charset=self.charset)
  File "/Users/user1/.virtualenvs/test/lib/python2.7/site-packages/werkzeug/test.py", line 104, in stream_encode_multipart
    write('\r\n\r\n' + value)
  File "/Users/user1/.virtualenvs/test/lib/python2.7/site-packages/werkzeug/test.py", line 71, in write
    write_binary(string.encode(charset))
UnicodeDecodeError: 'ascii' codec can't decode byte 0xe2 in position 4: ordinal not in range(128)

It works great when I send both fields to Postman (Google Chrome extension).

Is everything alright and should I wrap the fields using unicode with base64 or something else? Or is this a bug in the werkzeug test client?

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1 answer

See how the client client error, I already have another error with the test client, when the direct request works fine, but the test client has an unexpected result.

https://github.com/mitsuhiko/werkzeug/blob/master/werkzeug/test.py#L71 string str. , . python 2:

def write(string):
    if isinstance(string, str):
        write_binary(string)
    else:
        write_binary(string.encode(charset))

: https://github.com/mitsuhiko/flask/issues/973.

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