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# -*- coding: utf-8 -*-
"""
tests.basic
~~~~~~~~~~~~~~~~~~~~~
The basic functionality.
:copyright: (c) 2015 by Armin Ronacher.
:license: BSD, see LICENSE for more details.
"""
import pytest
import re
import uuid
import time
import flask
import pickle
from datetime import datetime
from threading import Thread
from flask._compat import text_type
from werkzeug.exceptions import BadRequest, NotFound, Forbidden
from werkzeug.http import parse_date
from werkzeug.routing import BuildError
import werkzeug.serving
def test_options_work():
app = flask.Flask(__name__)
@app.route('/', methods=['GET', 'POST'])
def index():
return 'Hello World'
rv = app.test_client().open('/', method='OPTIONS')
assert sorted(rv.allow) == ['GET', 'HEAD', 'OPTIONS', 'POST']
assert rv.data == b''
def test_options_on_multiple_rules():
app = flask.Flask(__name__)
@app.route('/', methods=['GET', 'POST'])
def index():
return 'Hello World'
@app.route('/', methods=['PUT'])
def index_put():
return 'Aha!'
rv = app.test_client().open('/', method='OPTIONS')
assert sorted(rv.allow) == ['GET', 'HEAD', 'OPTIONS', 'POST', 'PUT']
def test_provide_automatic_options_attr():
app = flask.Flask(__name__)
def index():
return 'Hello World!'
index.provide_automatic_options = False
app.route('/')(index)
rv = app.test_client().open('/', method='OPTIONS')
assert rv.status_code == 405
app = flask.Flask(__name__)
def index2():
return 'Hello World!'
index2.provide_automatic_options = True
app.route('/', methods=['OPTIONS'])(index2)
rv = app.test_client().open('/', method='OPTIONS')
assert sorted(rv.allow) == ['OPTIONS']
def test_provide_automatic_options_kwarg():
app = flask.Flask(__name__)
def index():
return flask.request.method
def more():
return flask.request.method
app.add_url_rule('/', view_func=index, provide_automatic_options=False)
app.add_url_rule(
'/more', view_func=more, methods=['GET', 'POST'],
provide_automatic_options=False
)
c = app.test_client()
assert c.get('/').data == b'GET'
rv = c.post('/')
assert rv.status_code == 405
assert sorted(rv.allow) == ['GET', 'HEAD']
# Older versions of Werkzeug.test.Client don't have an options method
if hasattr(c, 'options'):
rv = c.options('/')
else:
rv = c.open('/', method='OPTIONS')
assert rv.status_code == 405
rv = c.head('/')
assert rv.status_code == 200
assert not rv.data # head truncates
assert c.post('/more').data == b'POST'
assert c.get('/more').data == b'GET'
rv = c.delete('/more')
assert rv.status_code == 405
assert sorted(rv.allow) == ['GET', 'HEAD', 'POST']
if hasattr(c, 'options'):
rv = c.options('/more')
else:
rv = c.open('/more', method='OPTIONS')
assert rv.status_code == 405
def test_request_dispatching():
app = flask.Flask(__name__)
@app.route('/')
def index():
return flask.request.method
@app.route('/more', methods=['GET', 'POST'])
def more():
return flask.request.method
c = app.test_client()
assert c.get('/').data == b'GET'
rv = c.post('/')
assert rv.status_code == 405
assert sorted(rv.allow) == ['GET', 'HEAD', 'OPTIONS']
rv = c.head('/')
assert rv.status_code == 200
assert not rv.data # head truncates
assert c.post('/more').data == b'POST'
assert c.get('/more').data == b'GET'
rv = c.delete('/more')
assert rv.status_code == 405
assert sorted(rv.allow) == ['GET', 'HEAD', 'OPTIONS', 'POST']
def test_disallow_string_for_allowed_methods():
app = flask.Flask(__name__)
with pytest.raises(TypeError):
@app.route('/', methods='GET POST')
def index():
return "Hey"
def test_url_mapping():
app = flask.Flask(__name__)
random_uuid4 = "7eb41166-9ebf-4d26-b771-ea3f54f8b383"
def index():
return flask.request.method
def more():
return flask.request.method
def options():
return random_uuid4
app.add_url_rule('/', 'index', index)
app.add_url_rule('/more', 'more', more, methods=['GET', 'POST'])
# Issue 1288: Test that automatic options are not added when non-uppercase 'options' in methods
app.add_url_rule('/options', 'options', options, methods=['options'])
c = app.test_client()
assert c.get('/').data == b'GET'
rv = c.post('/')
assert rv.status_code == 405
assert sorted(rv.allow) == ['GET', 'HEAD', 'OPTIONS']
rv = c.head('/')
assert rv.status_code == 200
assert not rv.data # head truncates
assert c.post('/more').data == b'POST'
assert c.get('/more').data == b'GET'
rv = c.delete('/more')
assert rv.status_code == 405
assert sorted(rv.allow) == ['GET', 'HEAD', 'OPTIONS', 'POST']
rv = c.open('/options', method='OPTIONS')
assert rv.status_code == 200
assert random_uuid4 in rv.data.decode("utf-8")
def test_werkzeug_routing():
from werkzeug.routing import Submount, Rule
app = flask.Flask(__name__)
app.url_map.add(Submount('/foo', [
Rule('/bar', endpoint='bar'),
Rule('/', endpoint='index')
]))
def bar():
return 'bar'
def index():
return 'index'
app.view_functions['bar'] = bar
app.view_functions['index'] = index
c = app.test_client()
assert c.get('/foo/').data == b'index'
assert c.get('/foo/bar').data == b'bar'
def test_endpoint_decorator():
from werkzeug.routing import Submount, Rule
app = flask.Flask(__name__)
app.url_map.add(Submount('/foo', [
Rule('/bar', endpoint='bar'),
Rule('/', endpoint='index')
]))
@app.endpoint('bar')
def bar():
return 'bar'
@app.endpoint('index')
def index():
return 'index'
c = app.test_client()
assert c.get('/foo/').data == b'index'
assert c.get('/foo/bar').data == b'bar'
def test_session():
app = flask.Flask(__name__)
app.secret_key = 'testkey'
@app.route('/set', methods=['POST'])
def set():
flask.session['value'] = flask.request.form['value']
return 'value set'
@app.route('/get')
def get():
return flask.session['value']
c = app.test_client()
assert c.post('/set', data={'value': '42'}).data == b'value set'
assert c.get('/get').data == b'42'
def test_session_using_server_name():
app = flask.Flask(__name__)
app.config.update(
SECRET_KEY='foo',
SERVER_NAME='example.com'
)
@app.route('/')
def index():
flask.session['testing'] = 42
return 'Hello World'
rv = app.test_client().get('/', 'http://example.com/')
assert 'domain=.example.com' in rv.headers['set-cookie'].lower()
assert 'httponly' in rv.headers['set-cookie'].lower()
def test_session_using_server_name_and_port():
app = flask.Flask(__name__)
app.config.update(
SECRET_KEY='foo',
SERVER_NAME='example.com:8080'
)
@app.route('/')
def index():
flask.session['testing'] = 42
return 'Hello World'
rv = app.test_client().get('/', 'http://example.com:8080/')
assert 'domain=.example.com' in rv.headers['set-cookie'].lower()
assert 'httponly' in rv.headers['set-cookie'].lower()
def test_session_using_server_name_port_and_path():
app = flask.Flask(__name__)
app.config.update(
SECRET_KEY='foo',
SERVER_NAME='example.com:8080',
APPLICATION_ROOT='/foo'
)
@app.route('/')
def index():
flask.session['testing'] = 42
return 'Hello World'
rv = app.test_client().get('/', 'http://example.com:8080/foo')
assert 'domain=example.com' in rv.headers['set-cookie'].lower()
assert 'path=/foo' in rv.headers['set-cookie'].lower()
assert 'httponly' in rv.headers['set-cookie'].lower()
def test_session_using_application_root():
class PrefixPathMiddleware(object):
def __init__(self, app, prefix):
self.app = app
self.prefix = prefix
def __call__(self, environ, start_response):
environ['SCRIPT_NAME'] = self.prefix
return self.app(environ, start_response)
app = flask.Flask(__name__)
app.wsgi_app = PrefixPathMiddleware(app.wsgi_app, '/bar')
app.config.update(
SECRET_KEY='foo',
APPLICATION_ROOT='/bar'
)
@app.route('/')
def index():
flask.session['testing'] = 42
return 'Hello World'
rv = app.test_client().get('/', 'http://example.com:8080/')
assert 'path=/bar' in rv.headers['set-cookie'].lower()
def test_session_using_session_settings():
app = flask.Flask(__name__)
app.config.update(
SECRET_KEY='foo',
SERVER_NAME='www.example.com:8080',
APPLICATION_ROOT='/test',
SESSION_COOKIE_DOMAIN='.example.com',
SESSION_COOKIE_HTTPONLY=False,
SESSION_COOKIE_SECURE=True,
SESSION_COOKIE_PATH='/'
)
@app.route('/')
def index():
flask.session['testing'] = 42
return 'Hello World'
rv = app.test_client().get('/', 'http://www.example.com:8080/test/')
cookie = rv.headers['set-cookie'].lower()
assert 'domain=.example.com' in cookie
assert 'path=/' in cookie
assert 'secure' in cookie
assert 'httponly' not in cookie
def test_missing_session():
app = flask.Flask(__name__)
def expect_exception(f, *args, **kwargs):
e = pytest.raises(RuntimeError, f, *args, **kwargs)
assert e.value.args and 'session is unavailable' in e.value.args[0]
with app.test_request_context():
assert flask.session.get('missing_key') is None
expect_exception(flask.session.__setitem__, 'foo', 42)
expect_exception(flask.session.pop, 'foo')
def test_session_expiration():
permanent = True
app = flask.Flask(__name__)
app.secret_key = 'testkey'
@app.route('/')
def index():
flask.session['test'] = 42
flask.session.permanent = permanent
return ''
@app.route('/test')
def test():
return text_type(flask.session.permanent)
client = app.test_client()
rv = client.get('/')
assert 'set-cookie' in rv.headers
match = re.search(r'(?i)\bexpires=([^;]+)', rv.headers['set-cookie'])
expires = parse_date(match.group())
expected = datetime.utcnow() + app.permanent_session_lifetime
assert expires.year == expected.year
assert expires.month == expected.month
assert expires.day == expected.day
rv = client.get('/test')
assert rv.data == b'True'
permanent = False
rv = app.test_client().get('/')
assert 'set-cookie' in rv.headers
match = re.search(r'\bexpires=([^;]+)', rv.headers['set-cookie'])
assert match is None
def test_session_stored_last():
app = flask.Flask(__name__)
app.secret_key = 'development-key'
app.testing = True
@app.after_request
def modify_session(response):
flask.session['foo'] = 42
return response
@app.route('/')
def dump_session_contents():
return repr(flask.session.get('foo'))
c = app.test_client()
assert c.get('/').data == b'None'
assert c.get('/').data == b'42'
def test_session_special_types():
app = flask.Flask(__name__)
app.secret_key = 'development-key'
app.testing = True
now = datetime.utcnow().replace(microsecond=0)
the_uuid = uuid.uuid4()
@app.after_request
def modify_session(response):
flask.session['m'] = flask.Markup('Hello!')
flask.session['u'] = the_uuid
flask.session['dt'] = now
flask.session['b'] = b'\xff'
flask.session['t'] = (1, 2, 3)
return response
@app.route('/')
def dump_session_contents():
return pickle.dumps(dict(flask.session))
c = app.test_client()
c.get('/')
rv = pickle.loads(c.get('/').data)
assert rv['m'] == flask.Markup('Hello!')
assert type(rv['m']) == flask.Markup
assert rv['dt'] == now
assert rv['u'] == the_uuid
assert rv['b'] == b'\xff'
assert type(rv['b']) == bytes
assert rv['t'] == (1, 2, 3)
def test_session_cookie_setting():
app = flask.Flask(__name__)
app.testing = True
app.secret_key = 'dev key'
is_permanent = True
@app.route('/bump')
def bump():
rv = flask.session['foo'] = flask.session.get('foo', 0) + 1
flask.session.permanent = is_permanent
return str(rv)
@app.route('/read')
def read():
return str(flask.session.get('foo', 0))
def run_test(expect_header):
with app.test_client() as c:
assert c.get('/bump').data == b'1'
assert c.get('/bump').data == b'2'
assert c.get('/bump').data == b'3'
rv = c.get('/read')
set_cookie = rv.headers.get('set-cookie')
assert (set_cookie is not None) == expect_header
assert rv.data == b'3'
is_permanent = True
app.config['SESSION_REFRESH_EACH_REQUEST'] = True
run_test(expect_header=True)
is_permanent = True
app.config['SESSION_REFRESH_EACH_REQUEST'] = False
run_test(expect_header=False)
is_permanent = False
app.config['SESSION_REFRESH_EACH_REQUEST'] = True
run_test(expect_header=False)
is_permanent = False
app.config['SESSION_REFRESH_EACH_REQUEST'] = False
run_test(expect_header=False)
def test_flashes():
app = flask.Flask(__name__)
app.secret_key = 'testkey'
with app.test_request_context():
assert not flask.session.modified
flask.flash('Zap')
flask.session.modified = False
flask.flash('Zip')
assert flask.session.modified
assert list(flask.get_flashed_messages()) == ['Zap', 'Zip']
def test_extended_flashing():
# Be sure app.testing=True below, else tests can fail silently.
#
# Specifically, if app.testing is not set to True, the AssertionErrors
# in the view functions will cause a 500 response to the test client
# instead of propagating exceptions.
app = flask.Flask(__name__)
app.secret_key = 'testkey'
app.testing = True
@app.route('/')
def index():
flask.flash(u'Hello World')
flask.flash(u'Hello World', 'error')
flask.flash(flask.Markup(u'<em>Testing</em>'), 'warning')
return ''
@app.route('/test/')
def test():
messages = flask.get_flashed_messages()
assert list(messages) == [
u'Hello World',
u'Hello World',
flask.Markup(u'<em>Testing</em>')
]
return ''
@app.route('/test_with_categories/')
def test_with_categories():
messages = flask.get_flashed_messages(with_categories=True)
assert len(messages) == 3
assert list(messages) == [
('message', u'Hello World'),
('error', u'Hello World'),
('warning', flask.Markup(u'<em>Testing</em>'))
]
return ''
@app.route('/test_filter/')
def test_filter():
messages = flask.get_flashed_messages(
category_filter=['message'], with_categories=True)
assert list(messages) == [('message', u'Hello World')]
return ''
@app.route('/test_filters/')
def test_filters():
messages = flask.get_flashed_messages(
category_filter=['message', 'warning'], with_categories=True)
assert list(messages) == [
('message', u'Hello World'),
('warning', flask.Markup(u'<em>Testing</em>'))
]
return ''
@app.route('/test_filters_without_returning_categories/')
def test_filters2():
messages = flask.get_flashed_messages(
category_filter=['message', 'warning'])
assert len(messages) == 2
assert messages[0] == u'Hello World'
assert messages[1] == flask.Markup(u'<em>Testing</em>')
return ''
# Create new test client on each test to clean flashed messages.
c = app.test_client()
c.get('/')
c.get('/test/')
c = app.test_client()
c.get('/')
c.get('/test_with_categories/')
c = app.test_client()
c.get('/')
c.get('/test_filter/')
c = app.test_client()
c.get('/')
c.get('/test_filters/')
c = app.test_client()
c.get('/')
c.get('/test_filters_without_returning_categories/')
def test_request_processing():
app = flask.Flask(__name__)
evts = []
@app.before_request
def before_request():
evts.append('before')
@app.after_request
def after_request(response):
response.data += b'|after'
evts.append('after')
return response
@app.route('/')
def index():
assert 'before' in evts
assert 'after' not in evts
return 'request'
assert 'after' not in evts
rv = app.test_client().get('/').data
assert 'after' in evts
assert rv == b'request|after'
def test_request_preprocessing_early_return():
app = flask.Flask(__name__)
evts = []
@app.before_request
def before_request1():
evts.append(1)
@app.before_request
def before_request2():
evts.append(2)
return "hello"
@app.before_request
def before_request3():
evts.append(3)
return "bye"
@app.route('/')
def index():
evts.append('index')
return "damnit"
rv = app.test_client().get('/').data.strip()
assert rv == b'hello'
assert evts == [1, 2]
def test_after_request_processing():
app = flask.Flask(__name__)
app.testing = True
@app.route('/')
def index():
@flask.after_this_request
def foo(response):
response.headers['X-Foo'] = 'a header'
return response
return 'Test'
c = app.test_client()
resp = c.get('/')
assert resp.status_code == 200
assert resp.headers['X-Foo'] == 'a header'
def test_teardown_request_handler():
called = []
app = flask.Flask(__name__)
@app.teardown_request
def teardown_request(exc):
called.append(True)
return "Ignored"
@app.route('/')
def root():
return "Response"
rv = app.test_client().get('/')
assert rv.status_code == 200
assert b'Response' in rv.data
assert len(called) == 1
def test_teardown_request_handler_debug_mode():
called = []
app = flask.Flask(__name__)
app.testing = True
@app.teardown_request
def teardown_request(exc):
called.append(True)
return "Ignored"
@app.route('/')
def root():
return "Response"
rv = app.test_client().get('/')
assert rv.status_code == 200
assert b'Response' in rv.data
assert len(called) == 1
def test_teardown_request_handler_error():
called = []
app = flask.Flask(__name__)
app.config['LOGGER_HANDLER_POLICY'] = 'never'
@app.teardown_request
def teardown_request1(exc):
assert type(exc) == ZeroDivisionError
called.append(True)
# This raises a new error and blows away sys.exc_info(), so we can
# test that all teardown_requests get passed the same original
# exception.
try:
raise TypeError()
except:
pass
@app.teardown_request
def teardown_request2(exc):
assert type(exc) == ZeroDivisionError
called.append(True)
# This raises a new error and blows away sys.exc_info(), so we can
# test that all teardown_requests get passed the same original
# exception.
try:
raise TypeError()
except:
pass
@app.route('/')
def fails():
1 // 0
rv = app.test_client().get('/')
assert rv.status_code == 500
assert b'Internal Server Error' in rv.data
assert len(called) == 2
def test_before_after_request_order():
called = []
app = flask.Flask(__name__)
@app.before_request
def before1():
called.append(1)
@app.before_request
def before2():
called.append(2)
@app.after_request
def after1(response):
called.append(4)
return response
@app.after_request
def after2(response):
called.append(3)
return response
@app.teardown_request
def finish1(exc):
called.append(6)
@app.teardown_request
def finish2(exc):
called.append(5)
@app.route('/')
def index():
return '42'
rv = app.test_client().get('/')
assert rv.data == b'42'
assert called == [1, 2, 3, 4, 5, 6]
def test_error_handling():
app = flask.Flask(__name__)
app.config['LOGGER_HANDLER_POLICY'] = 'never'
@app.errorhandler(404)
def not_found(e):
return 'not found', 404
@app.errorhandler(500)
def internal_server_error(e):
return 'internal server error', 500
@app.errorhandler(Forbidden)
def forbidden(e):
return 'forbidden', 403
@app.route('/')
def index():
flask.abort(404)
@app.route('/error')
def error():
1 // 0
@app.route('/forbidden')
def error2():
flask.abort(403)
c = app.test_client()
rv = c.get('/')
assert rv.status_code == 404
assert rv.data == b'not found'
rv = c.get('/error')
assert rv.status_code == 500
assert b'internal server error' == rv.data
rv = c.get('/forbidden')
assert rv.status_code == 403
assert b'forbidden' == rv.data
def test_error_handling_processing():
app = flask.Flask(__name__)
app.config['LOGGER_HANDLER_POLICY'] = 'never'
@app.errorhandler(500)
def internal_server_error(e):
return 'internal server error', 500
@app.route('/')
def broken_func():
1 // 0
@app.after_request
def after_request(resp):
resp.mimetype = 'text/x-special'
return resp
with app.test_client() as c:
resp = c.get('/')
assert resp.mimetype == 'text/x-special'
assert resp.data == b'internal server error'
def test_baseexception_error_handling():
app = flask.Flask(__name__)
app.config['LOGGER_HANDLER_POLICY'] = 'never'
@app.route('/')
def broken_func():
raise KeyboardInterrupt()
with app.test_client() as c:
with pytest.raises(KeyboardInterrupt):
c.get('/')
ctx = flask._request_ctx_stack.top
assert ctx.preserved
assert type(ctx._preserved_exc) is KeyboardInterrupt
def test_before_request_and_routing_errors():
app = flask.Flask(__name__)
@app.before_request
def attach_something():
flask.g.something = 'value'
@app.errorhandler(404)
def return_something(error):
return flask.g.something, 404
rv = app.test_client().get('/')
assert rv.status_code == 404
assert rv.data == b'value'
def test_user_error_handling():
class MyException(Exception):
pass
app = flask.Flask(__name__)
@app.errorhandler(MyException)
def handle_my_exception(e):
assert isinstance(e, MyException)
return '42'
@app.route('/')
def index():
raise MyException()
c = app.test_client()
assert c.get('/').data == b'42'
def test_http_error_subclass_handling():
class ForbiddenSubclass(Forbidden):
pass
app = flask.Flask(__name__)
@app.errorhandler(ForbiddenSubclass)
def handle_forbidden_subclass(e):
assert isinstance(e, ForbiddenSubclass)
return 'banana'
@app.errorhandler(403)
def handle_forbidden_subclass(e):
assert not isinstance(e, ForbiddenSubclass)
assert isinstance(e, Forbidden)
return 'apple'
@app.route('/1')
def index1():
raise ForbiddenSubclass()
@app.route('/2')
def index2():
flask.abort(403)
@app.route('/3')
def index3():
raise Forbidden()
c = app.test_client()
assert c.get('/1').data == b'banana'
assert c.get('/2').data == b'apple'
assert c.get('/3').data == b'apple'
def test_trapping_of_bad_request_key_errors():
app = flask.Flask(__name__)
app.testing = True
@app.route('/fail')
def fail():
flask.request.form['missing_key']
c = app.test_client()
assert c.get('/fail').status_code == 400
app.config['TRAP_BAD_REQUEST_ERRORS'] = True
c = app.test_client()
with pytest.raises(KeyError) as e:
c.get("/fail")
assert e.errisinstance(BadRequest)
def test_trapping_of_all_http_exceptions():
app = flask.Flask(__name__)
app.testing = True
app.config['TRAP_HTTP_EXCEPTIONS'] = True
@app.route('/fail')
def fail():
flask.abort(404)
c = app.test_client()
with pytest.raises(NotFound):
c.get('/fail')
def test_enctype_debug_helper():
from flask.debughelpers import DebugFilesKeyError
app = flask.Flask(__name__)
app.debug = True
@app.route('/fail', methods=['POST'])
def index():
return flask.request.files['foo'].filename
# with statement is important because we leave an exception on the
# stack otherwise and we want to ensure that this is not the case
# to not negatively affect other tests.
with app.test_client() as c:
with pytest.raises(DebugFilesKeyError) as e:
c.post('/fail', data={'foo': 'index.txt'})
assert 'no file contents were transmitted' in str(e.value)
assert 'This was submitted: "index.txt"' in str(e.value)
def test_response_types():
app = flask.Flask(__name__)
app.testing = True
@app.route('/text')
def from_text():
return u'Hällo Wörld'
@app.route('/bytes')
def from_bytes():
return u'Hällo Wörld'.encode('utf-8')
@app.route('/full_tuple')
def from_full_tuple():
return 'Meh', 400, {
'X-Foo': 'Testing',
'Content-Type': 'text/plain; charset=utf-8'
}
@app.route('/text_headers')
def from_text_headers():
return 'Hello', {
'X-Foo': 'Test',