flask/flask/testsuite/helpers.py
Chason Chaffin 5e8dd8b287 Changed sort_json test to test str sorting
Tests when simplejson was installed were failing because of a change in
how it sorted in v3.0.0. This change first tests it via normal int
sorting for stdlib json then if that fails, it tests against str sorting
for simplejson.
2013-08-04 01:42:23 -07:00

623 lines
22 KiB
Python

# -*- coding: utf-8 -*-
"""
flask.testsuite.helpers
~~~~~~~~~~~~~~~~~~~~~~~
Various helpers.
:copyright: (c) 2011 by Armin Ronacher.
:license: BSD, see LICENSE for more details.
"""
import os
import flask
import unittest
from logging import StreamHandler
from flask.testsuite import FlaskTestCase, catch_warnings, catch_stderr
from werkzeug.http import parse_cache_control_header, parse_options_header
from flask._compat import StringIO, text_type
def has_encoding(name):
try:
import codecs
codecs.lookup(name)
return True
except LookupError:
return False
class JSONTestCase(FlaskTestCase):
def test_json_bad_requests(self):
app = flask.Flask(__name__)
@app.route('/json', methods=['POST'])
def return_json():
return flask.jsonify(foo=text_type(flask.request.get_json()))
c = app.test_client()
rv = c.post('/json', data='malformed', content_type='application/json')
self.assert_equal(rv.status_code, 400)
def test_json_body_encoding(self):
app = flask.Flask(__name__)
app.testing = True
@app.route('/')
def index():
return flask.request.get_json()
c = app.test_client()
resp = c.get('/', data=u'"Hällo Wörld"'.encode('iso-8859-15'),
content_type='application/json; charset=iso-8859-15')
self.assert_equal(resp.data, u'Hällo Wörld'.encode('utf-8'))
def test_jsonify(self):
d = dict(a=23, b=42, c=[1, 2, 3])
app = flask.Flask(__name__)
@app.route('/kw')
def return_kwargs():
return flask.jsonify(**d)
@app.route('/dict')
def return_dict():
return flask.jsonify(d)
c = app.test_client()
for url in '/kw', '/dict':
rv = c.get(url)
self.assert_equal(rv.mimetype, 'application/json')
self.assert_equal(flask.json.loads(rv.data), d)
def test_json_as_unicode(self):
app = flask.Flask(__name__)
app.config['JSON_AS_ASCII'] = True
with app.app_context():
rv = flask.json.dumps(u'\N{SNOWMAN}')
self.assert_equal(rv, '"\\u2603"')
app.config['JSON_AS_ASCII'] = False
with app.app_context():
rv = flask.json.dumps(u'\N{SNOWMAN}')
self.assert_equal(rv, u'"\u2603"')
def test_json_attr(self):
app = flask.Flask(__name__)
@app.route('/add', methods=['POST'])
def add():
json = flask.request.get_json()
return text_type(json['a'] + json['b'])
c = app.test_client()
rv = c.post('/add', data=flask.json.dumps({'a': 1, 'b': 2}),
content_type='application/json')
self.assert_equal(rv.data, b'3')
def test_template_escaping(self):
app = flask.Flask(__name__)
render = flask.render_template_string
with app.test_request_context():
rv = flask.json.htmlsafe_dumps('</script>')
self.assert_equal(rv, u'"\\u003c/script\\u003e"')
self.assert_equal(type(rv), text_type)
rv = render('{{ "</script>"|tojson }}')
self.assert_equal(rv, '"\\u003c/script\\u003e"')
rv = render('{{ "<\0/script>"|tojson }}')
self.assert_equal(rv, '"\\u003c\\u0000/script\\u003e"')
rv = render('{{ "<!--<script>"|tojson }}')
self.assert_equal(rv, '"\\u003c!--\\u003cscript\\u003e"')
rv = render('{{ "&"|tojson }}')
self.assert_equal(rv, '"\\u0026"')
rv = render('{{ "\'"|tojson }}')
self.assert_equal(rv, '"\\u0027"')
rv = render("<a ng-data='{{ data|tojson }}'></a>",
data={'x': ["foo", "bar", "baz'"]})
self.assert_equal(rv,
'<a ng-data=\'{"x": ["foo", "bar", "baz\\u0027"]}\'></a>')
def test_json_customization(self):
class X(object):
def __init__(self, val):
self.val = val
class MyEncoder(flask.json.JSONEncoder):
def default(self, o):
if isinstance(o, X):
return '<%d>' % o.val
return flask.json.JSONEncoder.default(self, o)
class MyDecoder(flask.json.JSONDecoder):
def __init__(self, *args, **kwargs):
kwargs.setdefault('object_hook', self.object_hook)
flask.json.JSONDecoder.__init__(self, *args, **kwargs)
def object_hook(self, obj):
if len(obj) == 1 and '_foo' in obj:
return X(obj['_foo'])
return obj
app = flask.Flask(__name__)
app.testing = True
app.json_encoder = MyEncoder
app.json_decoder = MyDecoder
@app.route('/', methods=['POST'])
def index():
return flask.json.dumps(flask.request.get_json()['x'])
c = app.test_client()
rv = c.post('/', data=flask.json.dumps({
'x': {'_foo': 42}
}), content_type='application/json')
self.assertEqual(rv.data, b'"<42>"')
def test_modified_url_encoding(self):
class ModifiedRequest(flask.Request):
url_charset = 'euc-kr'
app = flask.Flask(__name__)
app.testing = True
app.request_class = ModifiedRequest
app.url_map.charset = 'euc-kr'
@app.route('/')
def index():
return flask.request.args['foo']
rv = app.test_client().get(u'/?foo=정상처리'.encode('euc-kr'))
self.assert_equal(rv.status_code, 200)
self.assert_equal(rv.data, u'정상처리'.encode('utf-8'))
if not has_encoding('euc-kr'):
test_modified_url_encoding = None
def test_json_key_sorting(self):
app = flask.Flask(__name__)
app.testing = True
self.assert_equal(app.config['JSON_SORT_KEYS'], True)
d = dict.fromkeys(range(20), 'foo')
@app.route('/')
def index():
return flask.jsonify(values=d)
c = app.test_client()
rv = c.get('/')
lines = [x.strip() for x in rv.data.strip().decode('utf-8').splitlines()]
sorted_by_str = [
'{',
'"values": {',
'"0": "foo",',
'"1": "foo",',
'"10": "foo",',
'"11": "foo",',
'"12": "foo",',
'"13": "foo",',
'"14": "foo",',
'"15": "foo",',
'"16": "foo",',
'"17": "foo",',
'"18": "foo",',
'"19": "foo",',
'"2": "foo",',
'"3": "foo",',
'"4": "foo",',
'"5": "foo",',
'"6": "foo",',
'"7": "foo",',
'"8": "foo",',
'"9": "foo"',
'}',
'}'
]
sorted_by_int = [
'{',
'"values": {',
'"0": "foo",',
'"1": "foo",',
'"2": "foo",',
'"3": "foo",',
'"4": "foo",',
'"5": "foo",',
'"6": "foo",',
'"7": "foo",',
'"8": "foo",',
'"9": "foo",',
'"10": "foo",',
'"11": "foo",',
'"12": "foo",',
'"13": "foo",',
'"14": "foo",',
'"15": "foo",',
'"16": "foo",',
'"17": "foo",',
'"18": "foo",',
'"19": "foo"',
'}',
'}'
]
try:
self.assert_equal(lines, sorted_by_int)
except AssertionError:
self.assert_equal(lines, sorted_by_str)
class SendfileTestCase(FlaskTestCase):
def test_send_file_regular(self):
app = flask.Flask(__name__)
with app.test_request_context():
rv = flask.send_file('static/index.html')
self.assert_true(rv.direct_passthrough)
self.assert_equal(rv.mimetype, 'text/html')
with app.open_resource('static/index.html') as f:
rv.direct_passthrough = False
self.assert_equal(rv.data, f.read())
rv.close()
def test_send_file_xsendfile(self):
app = flask.Flask(__name__)
app.use_x_sendfile = True
with app.test_request_context():
rv = flask.send_file('static/index.html')
self.assert_true(rv.direct_passthrough)
self.assert_in('x-sendfile', rv.headers)
self.assert_equal(rv.headers['x-sendfile'],
os.path.join(app.root_path, 'static/index.html'))
self.assert_equal(rv.mimetype, 'text/html')
rv.close()
def test_send_file_object(self):
app = flask.Flask(__name__)
with catch_warnings() as captured:
with app.test_request_context():
f = open(os.path.join(app.root_path, 'static/index.html'))
rv = flask.send_file(f)
rv.direct_passthrough = False
with app.open_resource('static/index.html') as f:
self.assert_equal(rv.data, f.read())
self.assert_equal(rv.mimetype, 'text/html')
rv.close()
# mimetypes + etag
self.assert_equal(len(captured), 2)
app.use_x_sendfile = True
with catch_warnings() as captured:
with app.test_request_context():
f = open(os.path.join(app.root_path, 'static/index.html'))
rv = flask.send_file(f)
self.assert_equal(rv.mimetype, 'text/html')
self.assert_in('x-sendfile', rv.headers)
self.assert_equal(rv.headers['x-sendfile'],
os.path.join(app.root_path, 'static/index.html'))
rv.close()
# mimetypes + etag
self.assert_equal(len(captured), 2)
app.use_x_sendfile = False
with app.test_request_context():
with catch_warnings() as captured:
f = StringIO('Test')
rv = flask.send_file(f)
rv.direct_passthrough = False
self.assert_equal(rv.data, b'Test')
self.assert_equal(rv.mimetype, 'application/octet-stream')
rv.close()
# etags
self.assert_equal(len(captured), 1)
with catch_warnings() as captured:
f = StringIO('Test')
rv = flask.send_file(f, mimetype='text/plain')
rv.direct_passthrough = False
self.assert_equal(rv.data, b'Test')
self.assert_equal(rv.mimetype, 'text/plain')
rv.close()
# etags
self.assert_equal(len(captured), 1)
app.use_x_sendfile = True
with catch_warnings() as captured:
with app.test_request_context():
f = StringIO('Test')
rv = flask.send_file(f)
self.assert_not_in('x-sendfile', rv.headers)
rv.close()
# etags
self.assert_equal(len(captured), 1)
def test_attachment(self):
app = flask.Flask(__name__)
with catch_warnings() as captured:
with app.test_request_context():
f = open(os.path.join(app.root_path, 'static/index.html'))
rv = flask.send_file(f, as_attachment=True)
value, options = parse_options_header(rv.headers['Content-Disposition'])
self.assert_equal(value, 'attachment')
rv.close()
# mimetypes + etag
self.assert_equal(len(captured), 2)
with app.test_request_context():
self.assert_equal(options['filename'], 'index.html')
rv = flask.send_file('static/index.html', as_attachment=True)
value, options = parse_options_header(rv.headers['Content-Disposition'])
self.assert_equal(value, 'attachment')
self.assert_equal(options['filename'], 'index.html')
rv.close()
with app.test_request_context():
rv = flask.send_file(StringIO('Test'), as_attachment=True,
attachment_filename='index.txt',
add_etags=False)
self.assert_equal(rv.mimetype, 'text/plain')
value, options = parse_options_header(rv.headers['Content-Disposition'])
self.assert_equal(value, 'attachment')
self.assert_equal(options['filename'], 'index.txt')
rv.close()
def test_static_file(self):
app = flask.Flask(__name__)
# default cache timeout is 12 hours
with app.test_request_context():
# Test with static file handler.
rv = app.send_static_file('index.html')
cc = parse_cache_control_header(rv.headers['Cache-Control'])
self.assert_equal(cc.max_age, 12 * 60 * 60)
rv.close()
# Test again with direct use of send_file utility.
rv = flask.send_file('static/index.html')
cc = parse_cache_control_header(rv.headers['Cache-Control'])
self.assert_equal(cc.max_age, 12 * 60 * 60)
rv.close()
app.config['SEND_FILE_MAX_AGE_DEFAULT'] = 3600
with app.test_request_context():
# Test with static file handler.
rv = app.send_static_file('index.html')
cc = parse_cache_control_header(rv.headers['Cache-Control'])
self.assert_equal(cc.max_age, 3600)
rv.close()
# Test again with direct use of send_file utility.
rv = flask.send_file('static/index.html')
cc = parse_cache_control_header(rv.headers['Cache-Control'])
self.assert_equal(cc.max_age, 3600)
rv.close()
class StaticFileApp(flask.Flask):
def get_send_file_max_age(self, filename):
return 10
app = StaticFileApp(__name__)
with app.test_request_context():
# Test with static file handler.
rv = app.send_static_file('index.html')
cc = parse_cache_control_header(rv.headers['Cache-Control'])
self.assert_equal(cc.max_age, 10)
rv.close()
# Test again with direct use of send_file utility.
rv = flask.send_file('static/index.html')
cc = parse_cache_control_header(rv.headers['Cache-Control'])
self.assert_equal(cc.max_age, 10)
rv.close()
class LoggingTestCase(FlaskTestCase):
def test_logger_cache(self):
app = flask.Flask(__name__)
logger1 = app.logger
self.assert_true(app.logger is logger1)
self.assert_equal(logger1.name, __name__)
app.logger_name = __name__ + '/test_logger_cache'
self.assert_true(app.logger is not logger1)
def test_debug_log(self):
app = flask.Flask(__name__)
app.debug = True
@app.route('/')
def index():
app.logger.warning('the standard library is dead')
app.logger.debug('this is a debug statement')
return ''
@app.route('/exc')
def exc():
1 // 0
with app.test_client() as c:
with catch_stderr() as err:
c.get('/')
out = err.getvalue()
self.assert_in('WARNING in helpers [', out)
self.assert_in(os.path.basename(__file__.rsplit('.', 1)[0] + '.py'), out)
self.assert_in('the standard library is dead', out)
self.assert_in('this is a debug statement', out)
with catch_stderr() as err:
try:
c.get('/exc')
except ZeroDivisionError:
pass
else:
self.assert_true(False, 'debug log ate the exception')
def test_debug_log_override(self):
app = flask.Flask(__name__)
app.debug = True
app.logger_name = 'flask_tests/test_debug_log_override'
app.logger.level = 10
self.assert_equal(app.logger.level, 10)
def test_exception_logging(self):
out = StringIO()
app = flask.Flask(__name__)
app.logger_name = 'flask_tests/test_exception_logging'
app.logger.addHandler(StreamHandler(out))
@app.route('/')
def index():
1 // 0
rv = app.test_client().get('/')
self.assert_equal(rv.status_code, 500)
self.assert_in(b'Internal Server Error', rv.data)
err = out.getvalue()
self.assert_in('Exception on / [GET]', err)
self.assert_in('Traceback (most recent call last):', err)
self.assert_in('1 // 0', err)
self.assert_in('ZeroDivisionError:', err)
def test_processor_exceptions(self):
app = flask.Flask(__name__)
@app.before_request
def before_request():
if trigger == 'before':
1 // 0
@app.after_request
def after_request(response):
if trigger == 'after':
1 // 0
return response
@app.route('/')
def index():
return 'Foo'
@app.errorhandler(500)
def internal_server_error(e):
return 'Hello Server Error', 500
for trigger in 'before', 'after':
rv = app.test_client().get('/')
self.assert_equal(rv.status_code, 500)
self.assert_equal(rv.data, b'Hello Server Error')
def test_url_for_with_anchor(self):
app = flask.Flask(__name__)
@app.route('/')
def index():
return '42'
with app.test_request_context():
self.assert_equal(flask.url_for('index', _anchor='x y'),
'/#x%20y')
def test_url_for_with_scheme(self):
app = flask.Flask(__name__)
@app.route('/')
def index():
return '42'
with app.test_request_context():
self.assert_equal(flask.url_for('index',
_external=True,
_scheme='https'),
'https://localhost/')
def test_url_for_with_scheme_not_external(self):
app = flask.Flask(__name__)
@app.route('/')
def index():
return '42'
with app.test_request_context():
self.assert_raises(ValueError,
flask.url_for,
'index',
_scheme='https')
def test_url_with_method(self):
from flask.views import MethodView
app = flask.Flask(__name__)
class MyView(MethodView):
def get(self, id=None):
if id is None:
return 'List'
return 'Get %d' % id
def post(self):
return 'Create'
myview = MyView.as_view('myview')
app.add_url_rule('/myview/', methods=['GET'],
view_func=myview)
app.add_url_rule('/myview/<int:id>', methods=['GET'],
view_func=myview)
app.add_url_rule('/myview/create', methods=['POST'],
view_func=myview)
with app.test_request_context():
self.assert_equal(flask.url_for('myview', _method='GET'),
'/myview/')
self.assert_equal(flask.url_for('myview', id=42, _method='GET'),
'/myview/42')
self.assert_equal(flask.url_for('myview', _method='POST'),
'/myview/create')
class NoImportsTestCase(FlaskTestCase):
"""Test Flasks are created without import.
Avoiding ``__import__`` helps create Flask instances where there are errors
at import time. Those runtime errors will be apparent to the user soon
enough, but tools which build Flask instances meta-programmatically benefit
from a Flask which does not ``__import__``. Instead of importing to
retrieve file paths or metadata on a module or package, use the pkgutil and
imp modules in the Python standard library.
"""
def test_name_with_import_error(self):
try:
flask.Flask('importerror')
except NotImplementedError:
self.fail('Flask(import_name) is importing import_name.')
class StreamingTestCase(FlaskTestCase):
def test_streaming_with_context(self):
app = flask.Flask(__name__)
app.testing = True
@app.route('/')
def index():
def generate():
yield 'Hello '
yield flask.request.args['name']
yield '!'
return flask.Response(flask.stream_with_context(generate()))
c = app.test_client()
rv = c.get('/?name=World')
self.assertEqual(rv.data, b'Hello World!')
def test_streaming_with_context_as_decorator(self):
app = flask.Flask(__name__)
app.testing = True
@app.route('/')
def index():
@flask.stream_with_context
def generate():
yield 'Hello '
yield flask.request.args['name']
yield '!'
return flask.Response(generate())
c = app.test_client()
rv = c.get('/?name=World')
self.assertEqual(rv.data, b'Hello World!')
def test_streaming_with_context_and_custom_close(self):
app = flask.Flask(__name__)
app.testing = True
called = []
class Wrapper(object):
def __init__(self, gen):
self._gen = gen
def __iter__(self):
return self
def close(self):
called.append(42)
def __next__(self):
return next(self._gen)
next = __next__
@app.route('/')
def index():
def generate():
yield 'Hello '
yield flask.request.args['name']
yield '!'
return flask.Response(flask.stream_with_context(
Wrapper(generate())))
c = app.test_client()
rv = c.get('/?name=World')
self.assertEqual(rv.data, b'Hello World!')
self.assertEqual(called, [42])
def suite():
suite = unittest.TestSuite()
if flask.json_available:
suite.addTest(unittest.makeSuite(JSONTestCase))
suite.addTest(unittest.makeSuite(SendfileTestCase))
suite.addTest(unittest.makeSuite(LoggingTestCase))
suite.addTest(unittest.makeSuite(NoImportsTestCase))
suite.addTest(unittest.makeSuite(StreamingTestCase))
return suite