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# -*- coding: utf-8 -*-
"""
tests.appctx
~~~~~~~~~~~~
Tests the application context.
:copyright: (c) 2015 by Armin Ronacher.
:license: BSD, see LICENSE for more details.
"""
import pytest
import flask
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def test_basic_url_generation():
app = flask.Flask(__name__)
app.config['SERVER_NAME'] = 'localhost'
app.config['PREFERRED_URL_SCHEME'] = 'https'
@app.route('/')
def index():
pass
with app.app_context():
rv = flask.url_for('index')
assert rv == 'https://localhost/'
def test_url_generation_requires_server_name():
app = flask.Flask(__name__)
with app.app_context():
with pytest.raises(RuntimeError):
flask.url_for('index')
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def test_url_generation_without_context_fails():
with pytest.raises(RuntimeError):
flask.url_for('index')
def test_request_context_means_app_context():
app = flask.Flask(__name__)
with app.test_request_context():
assert flask.current_app._get_current_object() == app
assert flask._app_ctx_stack.top is None
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def test_app_context_provides_current_app():
app = flask.Flask(__name__)
with app.app_context():
assert flask.current_app._get_current_object() == app
assert flask._app_ctx_stack.top is None
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def test_app_tearing_down():
cleanup_stuff = []
app = flask.Flask(__name__)
@app.teardown_appcontext
def cleanup(exception):
cleanup_stuff.append(exception)
with app.app_context():
pass
assert cleanup_stuff == [None]
def test_app_tearing_down_with_previous_exception():
cleanup_stuff = []
app = flask.Flask(__name__)
@app.teardown_appcontext
def cleanup(exception):
cleanup_stuff.append(exception)
try:
raise Exception('dummy')
except Exception:
pass
with app.app_context():
pass
assert cleanup_stuff == [None]
def test_app_tearing_down_with_handled_exception():
cleanup_stuff = []
app = flask.Flask(__name__)
@app.teardown_appcontext
def cleanup(exception):
cleanup_stuff.append(exception)
with app.app_context():
try:
raise Exception('dummy')
except Exception:
pass
assert cleanup_stuff == [None]
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def test_app_ctx_globals_methods():
app = flask.Flask(__name__)
with app.app_context():
# get
assert flask.g.get('foo') is None
assert flask.g.get('foo', 'bar') == 'bar'
# __contains__
assert 'foo' not in flask.g
flask.g.foo = 'bar'
assert 'foo' in flask.g
# setdefault
flask.g.setdefault('bar', 'the cake is a lie')
flask.g.setdefault('bar', 'hello world')
assert flask.g.bar == 'the cake is a lie'
# pop
assert flask.g.pop('bar') == 'the cake is a lie'
with pytest.raises(KeyError):
flask.g.pop('bar')
assert flask.g.pop('bar', 'more cake') == 'more cake'
# __iter__
assert list(flask.g) == ['foo']
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def test_custom_app_ctx_globals_class():
class CustomRequestGlobals(object):
def __init__(self):
self.spam = 'eggs'
app = flask.Flask(__name__)
app.app_ctx_globals_class = CustomRequestGlobals
with app.app_context():
assert flask.render_template_string('{{ g.spam }}') == 'eggs'
def test_context_refcounts():
called = []
app = flask.Flask(__name__)
@app.teardown_request
def teardown_req(error=None):
called.append('request')
@app.teardown_appcontext
def teardown_app(error=None):
called.append('app')
@app.route('/')
def index():
with flask._app_ctx_stack.top:
with flask._request_ctx_stack.top:
pass
env = flask._request_ctx_stack.top.request.environ
assert env['werkzeug.request'] is not None
return u''
c = app.test_client()
res = c.get('/')
assert res.status_code == 200
assert res.data == b''
assert called == ['request', 'app']