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Description:

gocept.httpserverlayer 4.0

gocept.httpserverlayer
This package provides an HTTP server for testing your application with normal
HTTP clients (e.g. a real browser). This is done using test layers, which
are a feature of zope.testrunner.
gocept.httpserverlayer uses plone.testing for the test layer implementation,
and exposes the following resources (accessible in your test case as
self.layer[RESOURCE_NAME]):

http_host:
The hostname of the HTTP server (Default: localhost)

http_port:
The port of the HTTP server (Default: 0, which means chosen
automatically by the operating system)

http_address:
hostname:port, convenient to use in URLs
(e.g. 'http://user:password@%s/path' % self.layer['http_address'])

This package is compatible with Python version 3.6, 3.7, 3.8, and 3.9.

Contents

gocept.httpserverlayer

WSGI
Static files
Custom request handler
Framework integration
Zope 3 / ZTK / Grok (zope.app.wsgi)
Zope via WSGI
Zope / Plone via plone.testing.zope

Developing gocept.httpserverlayer
Change log for gocept.httpserverlayer

4.0 (2021-04-07)
3.2 (2019-04-03)
3.1 (2019-01-15)
3.0 (2018-06-29)
2.2 (2016-12-02)
2.1 (2016-12-01)
2.0 (2016-04-12)
1.5.3 (2015-01-09)
1.5.2 (2014-05-22)
1.5.1 (2014-02-10)
1.5.0 (2013-11-07)
1.4.1 (2013-10-01)
1.4.0 (2013-10-01)
1.3.0 (2013-07-18)
1.2.1 (2013-02-07)
1.2 (2013-02-06)
1.1 (2013-02-03)
1.0.1 (2012-12-21)
1.0 (2012-12-19)

WSGI
This test layer takes a WSGI callable and runs it in a temporary HTTP server:
import gocept.httpserverlayer.wsgi
from mypackage import App
import unittest

HTTP_LAYER = gocept.httpserverlayer.wsgi.Layer()
HTTP_LAYER.wsgi_app = App()

class WSGIExample(unittest.TestCase):

layer = HTTP_LAYER

def test_something(self):
r = urllib.urlopen('http://{0.layer[http_address]}/'.format(self))
self.assertIn('Hello world', r.read())
You can also have a base layer provide the WSGI callable (in the
wsgi_app resource):
import gocept.httpserverlayer.wsgi
from mypackage import App
import plone.testing

class WSGILayer(plone.testing.Layer):

def setUp(self):
self['wsgi_app'] = App()

WSGI_LAYER = WSGILayer()

HTTP_LAYER = gocept.httpserverlayer.wsgi.Layer(
name='HTTPLayer', bases=(WSGI_LAYER,))

Static files
This test layer serves up the contents of a directory:
import gocept.httpserverlayer.static
import pkg_resources
import unittest

HTTP_LAYER = gocept.httpserverlayer.static.Layer(
pkg_resources.resource_filename('my.package.tests', 'fixtures'))

class DirecoryExample(unittest.TestCase):

layer = HTTP_LAYER

def test_something(self):
r = urllib.urlopen('http://{0.layer[http_address]}/'.format(self))
self.assertIn('Hello world', r.read())
If you don’t pass in a directory, a temporary directory will be created/removed
automatically. The directory is provided in the documentroot resource.
For convenience, a layer instance is already provided as STATIC_FILES:
import gocept.httpserverlayer.static
import os.path
import unittest

HTTP_LAYER = gocept.httpserverlayer.static.STATIC_FILES

class TemporaryExample(unittest.TestCase):

layer = HTTP_LAYER

def test_something(self):
path = os.path.join(self.testlayer['documentroot'], 'index')
with open(path, 'w') as f:
f.write('Hello World!')
r = urllib.urlopen(
'http://{0.layer[http_address]}/index'.format(self))
self.assertIn('Hello world', r.read())

Custom request handler
This test layer allows you to provide your own HTTP request handler for very
fine-grained control:
import gocept.httpserverlayer.custom
import unittest

class RequestHandler(gocept.httpserverlayer.custom.RequestHandler):

response_code = 200
response_body = ''
posts_received = []

def do_POST(self):
length = int(self.headers['content-length'])
self.posts_received.append(dict(
path=self.path,
data=self.rfile.read(length),
headers=self.headers,
))
self.send_response(self.response_code)
self.end_headers()
self.wfile.write(self.response_body)

HTTP_LAYER = gocept.httpserverlayer.custom.Layer(RequestHandler)

class POSTExample(unittest.TestCase):

layer = HTTP_LAYER

def test_something(self):
urllib.urlopen('http://{0.layer[http_address]}/'.format(self),
urllib.urlencode({'foo': 'bar'}))
self.assertEqual(
'foo=bar',
self.layer['request_handler'].posts_received[0]['data'])

Framework integration
gocept.httpserverlayer also provides integration with some web frameworks.
Different frameworks require different dependencies; this is handled via
setuptools extras of gocept.httpserverlayer (e.g. for Grok integration you need
to require gocept.httpserverlayer[zopeappwsgi]).

Zope 3 / ZTK / Grok (zope.app.wsgi)
Requires gocept.httpserverlayer[zopeappwsgi]
If your ZTK application uses zope.app.wsgi.testlayer (which is the
recommended test setup for Grok, for example), you can use
gocept.httpserverlayer.zopeappwsgi.Layer to create a WSGI app that
integrates ZODB isolation, and gocept.httpserverlayer.wsgi.Layer to provide
the actual HTTP server. No special TestCase is required, unittest.TestCase
is enough.
The zopeappwsgi.Layer expects to find the current ZODB in the plone.testing
resource zodbDB (which is used by plone.testing.zodb.EMPTY_ZODB), or
you can inherit and override get_current_zodb. Here’s an example setup for
Grok (which uses zope.app.appsetup.testlayer.ZODBLayer):
import gocept.httpserverlayer.wsgi
import gocept.httpserverlayer.zopeappwsgi
import unittest
import zope.app.appsetup.testlayer

ZODB_LAYER = zope.app.appsetup.testlayer.ZODBLayer(
gocept.httpserverlayer.zopeappwsgi, 'testing.zcml')

class WSGILayer(gocept.httpserverlayer.zopeappwsgi.Layer):

defaultBases = (ZODB_LAYER,)

def get_current_zodb(self):
return ZODB_LAYER.db

WSGI_LAYER = WSGILayer()

HTTP_LAYER = gocept.httpserverlayer.wsgi.Layer(
name='HTTPLayer', bases=(WSGI_LAYER,))

class GrokExample(unittest.TestCase):

layer = HTTP_LAYER

def test(self):
r = urllib.urlopen('http://%s/' % self.layer['http_address'])
self.assertIn('Hello world', r.read())

Zope via WSGI
If your Zope setup supports WSGI, you can use the WSGI integration instead of a
specialised Zope integration to run your tests.
You might see an exception complaining about the Connection header.
To fix this issue you can use an additional middleware around your WSGI
application: gocept.httpserverlayer.wsgi.FixupMiddleware.

Zope / Plone via plone.testing.zope
Requires gocept.httpserverlayer[plonetestingzope].
gocept.httpserverlayer provides a plone.testing.Layer at
gocept.httpserverlayer.plonetestingzope.HTTP_SERVER that you can mix and match
with your base layers. No special TestCase is required, unittest.TestCase
is enough.

Caution!
This setup also uses the WSGI flavour instead of ZServer which
was supported in gocept.httpserverlayer < 3.

For a plain Zope application this might look like this (uses
plone.testing[zope]):
import gocept.httpserverlayer.plonetestingzope
import plone.testing
import plone.testing.zope

class Layer(plone.testing.Layer):

defaultBases = (plone.testing.zope.STARTUP,)

def setUp(self):
zope.configuration.xmlconfig.file(
'testing.zcml', package=mypackage,
context=self['configurationContext'])

ZOPE_LAYER = Layer()

HTTP_LAYER = plone.testing.Layer(
name='HTTPLayer',
bases=(ZOPE_LAYER,
gocept.httpserverlayer.plonetestingzope.HTTP_SERVER))

Developing gocept.httpserverlayer

Author:
gocept <mail@gocept.com>

PyPI page:
https://pypi.org/project/gocept.httpserverlayer/

Issue tracker:
https://github.com/gocept/gocept.httpserverlayer/issues

Source code:
https://github.com/gocept/gocept.httpserverlayer

Current change log:
https://raw.githubusercontent.com/gocept/gocept.httpserverlayer/master/CHANGES.rst

Run tests:
Use tox, for info see: https://pypi.org/project/tox/

Change log for gocept.httpserverlayer

4.0 (2021-04-07)

Drop support for Python 2.
Add support for Python 3.8 and 3.9.
Migrate to GitHub and GitHub Actions.

3.2 (2019-04-03)

Fix usage of pending deprecated Thread.isAlive().

3.1 (2019-01-15)

Create a wheel of the package.
Add support for Python 3.7.

3.0 (2018-06-29)

Add support for Python 3.6.
Drop support for Zope 2.x
Rename the setup.py extra plonetestingz2 into plonetestingzope.
Rename the module .plonetestingz2 into .plonetestingzope.

2.2 (2016-12-02)

Ensure compatibility with setuptools >= 30.0.

2.1 (2016-12-01)

Support the upcoming Zope 4 through extras_require [plonetestingz4].
Pin transaction < 2.0 and ZODB < 5.0 until Zope2 is compatible with
these releases. (See https://github.com/zopefoundation/Zope/issues/79)

2.0 (2016-04-12)

Drop support for:

zope.app.testing (extras_require: [zopeapptesting])
Testing.ZopeTestCase (extras_require: [zope2testcase])
plone.app.testing (extras_require: [test_plonetestingz2])
Products.PloneTestCase (extras_require: [plonetestcase])

Drop support for Python 2.6.
Use tox as testrunner.
Remove zc.buildout infrastructure.

1.5.3 (2015-01-09)

Don’t overwrite self.port when it was 0.

1.5.2 (2014-05-22)

Silence “error 32: Broken pipe” errors in custom.Layer, too.

1.5.1 (2014-02-10)

Silence “error 32: Broken pipe” errors in wsgi.Layer, they just
mean the client closed the connection prematurely, which is as
harmless as it is normal.

1.5.0 (2013-11-07)

Make it possible to dictate the hostname for the httpserver via environment
variable GOCEPT_HTTP_APP_HOST. You will need this if you run your tests
in a selenium grid on different machines.

1.4.1 (2013-10-01)

1.4.0 was a brown-bag, let’s try again.

1.4.0 (2013-10-01)

Make HTTP server and thread objects used by layers available as a resource.

1.3.0 (2013-07-18)

Replace dependency on distribute with setuptools, since the projects have merged.

1.2.1 (2013-02-07)

Fix custom layer test tear down.

1.2 (2013-02-06)

Fixed tests run on MacOS.
Use the server_address instead of server_name of HTTPServer to be
compatible with MacOS.
Dropped compatability with Zope < 2.12.
Removed customized HTTPServer, the BaseHTTPServer.HTTPServer does
everything we need.

1.1 (2013-02-03)

Add custom.Layer that uses a BaseHTTPServer with a custom RequestHandler,
and static.Layer that server the contents of a directory.
Dropped compatability with Python < 2.6.

1.0.1 (2012-12-21)

Avoid the property.setter spelling in the wsgi layer’s code for Python 2.5
compatibility.
Conditionally require wsgiref to make the wsgi layer work with Python 2.4.
Fixed an import in the plonetestcase layer’s tests.

1.0 (2012-12-19)
initial release (extracted from gocept.selenium-1.0)