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+This demonstrates how the Response object works, and tests it at the
+same time.
+
+ >>> from dtopt import ELLIPSIS
+ >>> from webob import Response, UTC
+ >>> from datetime import datetime
+ >>> res = Response('Test', status='200 OK')
+
+This is a minimal response object. We can do things like get and set
+the body:
+
+ >>> res.body
+ 'Test'
+ >>> res.body = 'Another test'
+ >>> res.body
+ 'Another test'
+ >>> res.body = 'Another'
+ >>> res.write(' test')
+ >>> res.app_iter
+ ['Another test']
+ >>> res.content_length
+ 12
+ >>> res.headers['content-length']
+ '12'
+
+Content-Length is only applied when setting the body to a string; you
+have to set it manually otherwise. There are also getters and setters
+for the various pieces:
+
+ >>> res.app_iter = ['test']
+ >>> print res.content_length
+ None
+ >>> res.content_length = 4
+ >>> res.status
+ '200 OK'
+ >>> res.status_int
+ 200
+ >>> res.headers
+ HeaderDict([('content-type', 'text/html; charset=utf8'), ('Content-Length', '4')])
+ >>> res.headerlist
+ [('content-type', 'text/html; charset=utf8'), ('Content-Length', '4')]
+
+Content-type and charset are handled separately as properties, though
+they are both in the ``res.headers['content-type']`` header:
+
+ >>> res.content_type
+ 'text/html'
+ >>> res.content_type = 'text/html'
+ >>> res.content_type
+ 'text/html'
+ >>> res.charset
+ 'utf8'
+ >>> res.charset = 'iso-8859-1'
+ >>> res.charset
+ 'iso-8859-1'
+ >>> res.content_type
+ 'text/html'
+ >>> res.headers['content-type']
+ 'text/html; charset=iso-8859-1'
+
+Cookie handling is done through methods:
+
+ >>> res.set_cookie('test', 'value')
+ >>> res.headers['set-cookie']
+ 'test=value; Path=/'
+ >>> res.set_cookie('test2', 'value2', max_age=10000)
+ >>> res.headers['set-cookie'] # We only see the last header
+ 'test2=value2; Max-Age=10000; Path=/'
+ >>> res.headers.getall('set-cookie')
+ ['test=value; Path=/', 'test2=value2; Max-Age=10000; Path=/']
+ >>> res.unset_cookie('test')
+ >>> res.headers.getall('set-cookie')
+ ['test2=value2; Max-Age=10000; Path=/']
+
+Most headers are available in a parsed getter/setter form through
+properties:
+
+ >>> res.age = 10
+ >>> res.age, res.headers['age']
+ (10, '10')
+ >>> res.allow = ['GET', 'PUT']
+ >>> res.allow, res.headers['allow']
+ (['GET', 'PUT'], 'GET, PUT')
+ >>> res.cache_control
+ <CacheControl ''>
+ >>> print res.cache_control.max_age
+ None
+ >>> res.cache_control.properties['max-age'] = None
+ >>> print res.cache_control.max_age
+ -1
+ >>> res.cache_control.max_age = 10
+ >>> res.cache_control
+ <CacheControl 'max-age=10'>
+ >>> res.headers['cache-control']
+ 'max-age=10'
+ >>> res.cache_control.max_stale = 10
+ Traceback (most recent call last):
+ ...
+ AttributeError: The property max-stale only applies to request Cache-Control
+ >>> res.cache_control = {}
+ >>> res.cache_control
+ <CacheControl ''>
+ >>> res.content_encoding = 'gzip'
+ >>> (res.content_encoding, res.headers['content-encoding'])
+ ('gzip', 'gzip')
+ >>> res.content_language = 'en'
+ >>> (res.content_language, res.headers['content-language'])
+ (['en'], 'en')
+ >>> res.content_location = 'http://localhost:8080'
+ >>> res.headers['content-location']
+ 'http://localhost:8080'
+ >>> res.content_range = (0, 100, 1000)
+ >>> (res.content_range, res.headers['content-range'])
+ (<ContentRange bytes 0-101/1000>, 'bytes 0-101/1000')
+ >>> res.date = datetime(2005, 1, 1, 12, 0, tzinfo=UTC)
+ >>> (res.date, res.headers['date'])
+ (datetime.datetime(2005, 1, 1, 12, 0, tzinfo=UTC), 'Sat, 01 Jan 2005 12:00:00 GMT')
+ >>> print res.etag
+ None
+ >>> res.etag = 'foo'
+ >>> (res.etag, res.headers['etag'])
+ ('foo', 'foo')
+ >>> res.expires = res.date
+ >>> res.retry_after = 120 # two minutes
+ >>> res.retry_after
+ datetime.datetime(...)
+ >>> res.server = 'Python/foo'
+ >>> res.headers['server']
+ 'Python/foo'
+ >>> res.vary = ['Cookie']
+ >>> (res.vary, res.headers['vary'])
+ (['Cookie'], 'Cookie')
+
+The location header will try to absolutify itself if you have a
+request object attached.
+
+ >>> res.location = '/test.html'
+ >>> from webob import Request
+ >>> res.request = Request.blank('/')
+ >>> res.location
+ 'http://localhost/test.html'
+ >>> res.request = None
+ >>> res.location
+ '/test.html'
+ >>> res.request = Request.blank('/')
+ >>> res.location = '/test2.html'
+ >>> res.request = None
+ >>> res.location
+ 'http://localhost/test2.html'
+
+There's some conditional response handling too (you have to turn on
+conditioanl_response)::
+
+ >>> res = Response(conditional_response=True)
+ >>> req = Request.blank('/')
+ >>> res.etag = 'tag'
+ >>> req.if_none_match = 'tag'
+ >>> req.get_response(res)
+ <Response ... 304 Not Modified>
+ >>> res.etag = 'other-tag'
+ >>> req.get_response(res)
+ <Response ... 200 OK>
+ >>> del req.if_none_match
+ >>> req.if_modified_since = datetime(2005, 1, 1, 12, 1, tzinfo=UTC)
+ >>> res.last_modified = datetime(2005, 1, 1, 12, 1, tzinfo=UTC)
+ >>> req.get_response(res)
+ <Response ... 304 Not Modified>
+ >>> res.last_modified = datetime(2006, 1, 1, 12, 1, tzinfo=UTC)
+ >>> req.get_response(res)
+ <Response ... 200 OK>
+ >>> res.last_modified = None
+ >>> req.get_response(res)
+ <Response ... 200 OK>
+
+Also range response::
+
+ >>> res = Response(conditional_response=True)
+ >>> req = Request.blank('/')
+ >>> res.body = '0123456789'
+ >>> req.range = (1, 5)
+ >>> result = req.get_response(res)
+ >>> result.body
+ '1234'
+ >>> result.content_range
+ <ContentRange bytes 1-6/10>
+ >>> tuple(result.content_range)
+ (1, 5, 10)
+ >>> # Now an invalid range:
+ >>> req.range = (0, 20)
+ >>> str(req.range)
+ 'bytes=0-21'
+ >>> result = req.get_response(res)
+ >>> result.body
+ '0123456789'
+ >>> print result.content_range
+ None
+
+That was easier; we'll try it with a iterator for the body::
+
+ >>> res = Response(conditional_response=True)
+ >>> res.app_iter = ['01234', '567', '89']
+ >>> req = Request.blank('/')
+ >>> req.range = (1, 5)
+ >>> result = req.get_response(res)
+ >>> # Because we don't know the length of the app_iter, this
+ >>> # doesn't work:
+ >>> result.body
+ '0123456789'
+ >>> print result.content_range
+ None
+ >>> req.range = (5, None)
+ >>> result = req.get_response(res)
+ >>> result.body
+ '56789'
+ >>> result.content_range
+ <ContentRange bytes 5-*/10>
+ >>> # If we set Content-Length then we can use it with an app_iter
+ >>> res.content_length = 10
+ >>> req.range = (1, 5)
+ >>> result = req.get_response(res)
+ >>> result.body
+ '1234'
+ >>> result.content_range
+ <ContentRange bytes 1-6/10>
+ >>> # And trying If-modified-since
+ >>> res.etag = 'foobar'
+ >>> req.if_range = 'foobar'
+ >>> req.if_range
+ <IfRange etag=foobar, date=*>
+ >>> result = req.get_response(res)
+ >>> result.content_range
+ <ContentRange bytes 1-6/10>
+ >>> req.if_range = 'blah'
+ >>> result = req.get_response(res)
+ >>> result.content_range
+ >>> req.if_range = datetime(2005, 1, 1, 12, 0, tzinfo=UTC)
+ >>> res.last_modified = datetime(2005, 1, 1, 12, 0, tzinfo=UTC)
+ >>> result = req.get_response(res)
+ >>> result.content_range
+ <ContentRange bytes 1-6/10>
+ >>> res.last_modified = datetime(2006, 1, 1, 12, 0, tzinfo=UTC)
+ >>> result = req.get_response(res)
+ >>> result.content_range
+
+Some tests of exceptions::
+
+ >>> from webob import exc
+ >>> res = exc.HTTPNotFound('Not found!')
+ >>> res.exception.content_type = 'text/plain'
+ >>> res.content_type
+ 'text/plain'
+ >>> res = exc.HTTPNotModified()
+ >>> res.headers
+ HeaderDict([])
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.