{"id":120,"date":"2011-11-03T08:19:30","date_gmt":"2011-11-03T07:19:30","guid":{"rendered":"http:\/\/blog.gocept.com\/?p=120"},"modified":"2012-12-03T15:10:28","modified_gmt":"2012-12-03T14:10:28","slug":"assertion-helper-for-zope-testbrowser-and-unittest","status":"publish","type":"post","link":"https:\/\/blog.gocept.com\/2011\/11\/03\/assertion-helper-for-zope-testbrowser-and-unittest\/","title":{"rendered":"Assertion helper for zope.testbrowser and unittest"},"content":{"rendered":"

zope.testbrowser<\/a> is a valuable tool for integration tests. Historically,\u00a0 the Zope community used to write quite a lot of doctest<\/a>s, but we at gocept have found them to be rather clumsy and too often yielding neither good tests nor good documentation. That’s why we don’t use doctest much anymore, and prefer plain unittest.TestCase<\/a>s instead. However, doctest has one very nice feature, ellipsis matching, that is really helpful for checking HTML output, since you can only make assertions about the parts that interest you. For example, given this kind of page:<\/p>\n

>>> print browser.contents\r\n<html>\r\n\u00a0 <head>\r\n\u00a0\u00a0\u00a0 <title>Simple Page<\/title>\r\n\u00a0 <\/head>\r\n\u00a0 <body>\r\n\u00a0\u00a0\u00a0 <h1>Simple Page<\/h1>\r\n\u00a0 <\/body>\r\n<\/html><\/pre>\n
If all you’re interested in is that the <h1> is rendered properly, you can simply say:<\/p>\n
>>> print browser.contents\r\n<...<h1>Simple Page<\/h1>...<\/pre>\n
We’ve now ported this functionality to unittest, as assertEllipsis, in gocept.testing<\/a>. Some examples:<\/p>\n
self.assertEllipsis('...bar...', 'foo bar qux')\r\n# -> nothing happens\r\n\r\nself.assertEllipsis('foo', 'bar')\r\n# -> AssertionError: Differences (ndiff with -expected +actual):\r\n\u00a0\u00a0\u00a0\u00a0 - foo\r\n\u00a0\u00a0\u00a0\u00a0 + bar\r\n\r\nself.assertNotEllipsis('foo', 'foo')\r\n# -> AssertionError: \"Value unexpectedly matches expression 'foo'.\"<\/pre>\n
To use it, inherit from gocept.testing.assertion.Ellipsis in addition to unittest.TestCase.<\/p>\n","protected":false},"excerpt":{"rendered":"
zope.testbrowser is a valuable tool for integration tests. Historically,\u00a0 the Zope community used to write quite a lot of doctests, but we at gocept have found them to be rather clumsy and too often yielding neither good tests nor good documentation. That’s why we don’t use doctest much anymore, and prefer plain unittest.TestCases instead. However, … Continue reading “Assertion helper for zope.testbrowser and unittest”<\/span><\/a><\/p>\n","protected":false},"author":10315341,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_newsletter_tier_id":0,"footnotes":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false}}},"categories":[10221],"tags":[],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/pFP3y-1W","jetpack-related-posts":[{"id":1752,"url":"https:\/\/blog.gocept.com\/2016\/10\/04\/zope-resurrection-part-2-defibrillation\/","url_meta":{"origin":120,"position":0},"title":"Zope Resurrection Part 2 \u2013 Defibrillation","author":"Michael Howitz","date":"October 4, 2016","format":false,"excerpt":"After\u00a0reanimation\u00a0we started\u00a0defibrillation of Zope and \u2026 it kinda worked: On our\u00a0sprint we got\u00a0the following things done to help\u00a0Zope in the Python 3 wonderland: Release\u00a0zope.testbrowser 5.0\u00a0which is compatible with Python 3 and no longer uses\u00a0mechanize. 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