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# -*- coding: utf-8 -*-
"""
flask.testsuite.views
~~~~~~~~~~~~~~~~~~~~~
Pluggable views.
:copyright: (c) 2011 by Armin Ronacher.
:license: BSD, see LICENSE for more details.
"""
from __future__ import with_statement
import flask
import flask.views
import unittest
from flask.testsuite import FlaskTestCase
from werkzeug.http import parse_set_header
class ViewTestCase(FlaskTestCase):
def common_test(self, app):
c = app.test_client()
self.assert_equal(c.get('/').data, 'GET')
self.assert_equal(c.post('/').data, 'POST')
self.assert_equal(c.put('/').status_code, 405)
meths = parse_set_header(c.open('/', method='OPTIONS').headers['Allow'])
self.assert_equal(sorted(meths), ['GET', 'HEAD', 'OPTIONS', 'POST'])
def test_basic_view(self):
app = flask.Flask(__name__)
class Index(flask.views.View):
methods = ['GET', 'POST']
def dispatch_request(self):
return flask.request.method
app.add_url_rule('/', view_func=Index.as_view('index'))
self.common_test(app)
def test_method_based_view(self):
app = flask.Flask(__name__)
class Index(flask.views.MethodView):
def get(self):
return 'GET'
def post(self):
return 'POST'
app.add_url_rule('/', view_func=Index.as_view('index'))
self.common_test(app)
def test_view_patching(self):
app = flask.Flask(__name__)
class Index(flask.views.MethodView):
def get(self):
1/0
def post(self):
1/0
class Other(Index):
def get(self):
return 'GET'
def post(self):
return 'POST'
view = Index.as_view('index')
view.view_class = Other
app.add_url_rule('/', view_func=view)
self.common_test(app)
def test_view_inheritance(self):
app = flask.Flask(__name__)
class Index(flask.views.MethodView):
def get(self):
return 'GET'
def post(self):
return 'POST'
class BetterIndex(Index):
def delete(self):
return 'DELETE'
app.add_url_rule('/', view_func=BetterIndex.as_view('index'))
c = app.test_client()
meths = parse_set_header(c.open('/', method='OPTIONS').headers['Allow'])
self.assert_equal(sorted(meths), ['DELETE', 'GET', 'HEAD', 'OPTIONS', 'POST'])
def test_view_decorators(self):
app = flask.Flask(__name__)
def add_x_parachute(f):
def new_function(*args, **kwargs):
resp = flask.make_response(f(*args, **kwargs))
resp.headers['X-Parachute'] = 'awesome'
return resp
return new_function
class Index(flask.views.View):
decorators = [add_x_parachute]
def dispatch_request(self):
return 'Awesome'
app.add_url_rule('/', view_func=Index.as_view('index'))
c = app.test_client()
rv = c.get('/')
self.assert_equal(rv.headers['X-Parachute'], 'awesome')
self.assert_equal(rv.data, 'Awesome')
def test_implicit_head(self):
app = flask.Flask(__name__)
class Index(flask.views.MethodView):
def get(self):
return flask.Response('Blub', headers={
'X-Method': flask.request.method
})
app.add_url_rule('/', view_func=Index.as_view('index'))
c = app.test_client()
rv = c.get('/')
self.assert_equal(rv.data, 'Blub')
self.assert_equal(rv.headers['X-Method'], 'GET')
rv = c.head('/')
self.assert_equal(rv.data, '')
self.assert_equal(rv.headers['X-Method'], 'HEAD')
def test_explicit_head(self):
app = flask.Flask(__name__)
class Index(flask.views.MethodView):
def get(self):
return 'GET'
def head(self):
return flask.Response('', headers={'X-Method': 'HEAD'})
app.add_url_rule('/', view_func=Index.as_view('index'))
c = app.test_client()
rv = c.get('/')
self.assert_equal(rv.data, 'GET')
rv = c.head('/')
self.assert_equal(rv.data, '')
self.assert_equal(rv.headers['X-Method'], 'HEAD')
def test_endpoint_override(self):
app = flask.Flask(__name__)
app.debug = True
class Index(flask.views.View):
methods = ['GET', 'POST']
def dispatch_request(self):
return flask.request.method
app.add_url_rule('/', view_func=Index.as_view('index'))
with self.assert_raises(AssertionError):
app.add_url_rule('/', view_func=Index.as_view('index'))
# But these tests should still pass. We just log a warning.
self.common_test(app)
def suite():
suite = unittest.TestSuite()
suite.addTest(unittest.makeSuite(ViewTestCase))
return suite
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