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# coding: utf8
from __future__ import unicode_literals
from flask import request
from flask_api import exceptions, parsers, status, mediatypes, FlaskAPI
from flask_api.decorators import set_parsers
import io
import json
import unittest
app = FlaskAPI(__name__)
@app.route('/', methods=['POST'])
def data():
return {
'data': request.data,
'form': request.form,
'files': dict([
(key, {'name': val.filename, 'contents': val.read().decode('utf8')})
for key, val in request.files.items()
])
}
class ParserTests(unittest.TestCase):
def test_valid_json(self):
parser = parsers.JSONParser()
stream = io.BytesIO(b'{"key": 1, "other": "two"}')
data = parser.parse(stream, 'application/json')
self.assertEqual(data, {"key": 1, "other": "two"})
def test_invalid_json(self):
parser = parsers.JSONParser()
stream = io.BytesIO(b'{key: 1, "other": "two"}')
with self.assertRaises(exceptions.ParseError) as context:
parser.parse(stream, mediatypes.MediaType('application/json'))
detail = str(context.exception)
expected_py2 = 'JSON parse error - Expecting property name: line 1 column 1 (char 1)'
expected_py3 = 'JSON parse error - Expecting property name enclosed in double quotes: line 1 column 2 (char 1)'
self.assertIn(detail, (expected_py2, expected_py3))
def test_invalid_multipart(self):
parser = parsers.MultiPartParser()
stream = io.BytesIO(b'invalid')
media_type = mediatypes.MediaType('multipart/form-data; boundary="foo"')
with self.assertRaises(exceptions.ParseError) as context:
parser.parse(stream, media_type, content_length=len('invalid'))
detail = str(context.exception)
expected = 'Multipart parse error - Expected boundary at start of multipart data'
self.assertEqual(detail, expected)
def test_invalid_multipart_no_boundary(self):
parser = parsers.MultiPartParser()
stream = io.BytesIO(b'invalid')
with self.assertRaises(exceptions.ParseError) as context:
parser.parse(stream, mediatypes.MediaType('multipart/form-data'))
detail = str(context.exception)
expected = 'Multipart message missing boundary in Content-Type header'
self.assertEqual(detail, expected)
def test_renderer_negotiation_not_implemented(self):
parser = parsers.BaseParser()
with self.assertRaises(NotImplementedError) as context:
parser.parse(None, None)
msg = str(context.exception)
expected = '`parse()` method must be implemented for class "BaseParser"'
self.assertEqual(msg, expected)
def test_accessing_json(self):
with app.test_client() as client:
data = json.dumps({'example': 'example'})
response = client.post('/', data=data, content_type='application/json')
self.assertEqual(response.status_code, status.HTTP_200_OK)
self.assertEqual(response.headers['Content-Type'], 'application/json')
data = json.loads(response.get_data().decode('utf8'))
expected = {
"data": {"example": "example"},
"form": {},
"files": {}
}
self.assertEqual(data, expected)
def test_accessing_url_encoded(self):
with app.test_client() as client:
data = {'example': 'example'}
response = client.post('/', data=data)
self.assertEqual(response.status_code, status.HTTP_200_OK)
self.assertEqual(response.headers['Content-Type'], 'application/json')
data = json.loads(response.get_data().decode('utf8'))
expected = {
"data": {"example": "example"},
"form": {"example": "example"},
"files": {}
}
self.assertEqual(data, expected)
def test_accessing_multipart(self):
with app.test_client() as client:
data = {'example': 'example', 'upload': (io.BytesIO(b'file contents'), 'name.txt')}
response = client.post('/', data=data)
self.assertEqual(response.status_code, status.HTTP_200_OK)
self.assertEqual(response.headers['Content-Type'], 'application/json')
data = json.loads(response.get_data().decode('utf8'))
expected = {
"data": {"example": "example"},
"form": {"example": "example"},
"files": {"upload": {"name": "name.txt", "contents": "file contents"}}
}
self.assertEqual(data, expected)
class OverrideParserSettings(unittest.TestCase):
def setUp(self):
class CustomParser1(parsers.BaseParser):
media_type = '*/*'
def parse(self, stream, media_type, content_length=None):
return 'custom parser 1'
class CustomParser2(parsers.BaseParser):
media_type = '*/*'
def parse(self, stream, media_type, content_length=None):
return 'custom parser 2'
app = FlaskAPI(__name__)
app.config['DEFAULT_PARSERS'] = [CustomParser1]
@app.route('/custom_parser_1/', methods=['POST'])
def custom_parser_1():
return {'data': request.data}
@app.route('/custom_parser_2/', methods=['POST'])
@set_parsers([CustomParser2])
def custom_parser_2():
return {'data': request.data}
@app.route('/custom_parser_2_as_args/', methods=['POST'])
@set_parsers(CustomParser2, CustomParser1)
def custom_parser_2_as_args():
return {'data': request.data}
self.app = app
def test_overridden_parsers_with_settings(self):
with self.app.test_client() as client:
data = {'example': 'example'}
response = client.post('/custom_parser_1/', data=data)
self.assertEqual(response.status_code, status.HTTP_200_OK)
self.assertEqual(response.headers['Content-Type'], 'application/json')
data = json.loads(response.get_data().decode('utf8'))
expected = {
"data": "custom parser 1",
}
self.assertEqual(data, expected)
def test_overridden_parsers_with_decorator(self):
with self.app.test_client() as client:
data = {'example': 'example'}
response = client.post('/custom_parser_2/', data=data)
self.assertEqual(response.status_code, status.HTTP_200_OK)
self.assertEqual(response.headers['Content-Type'], 'application/json')
data = json.loads(response.get_data().decode('utf8'))
expected = {
"data": "custom parser 2",
}
self.assertEqual(data, expected)
def test_overridden_parsers_with_decorator_as_args(self):
with self.app.test_client() as client:
data = {'example': 'example'}
response = client.post('/custom_parser_2_as_args/', data=data)
self.assertEqual(response.status_code, status.HTTP_200_OK)
self.assertEqual(response.headers['Content-Type'], 'application/json')
data = json.loads(response.get_data().decode('utf8'))
expected = {
"data": "custom parser 2",
}
self.assertEqual(data, expected)
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