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Edited testing.txt changes from [17283] 

git-svn-id: http://code.djangoproject.com/svn/django/trunk@17306 bcc190cf-cafb-0310-a4f2-bffc1f526a37
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Adrian Holovaty 2011-12-30 20:29:27 +00:00
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@ -1870,16 +1870,16 @@ out the `full reference`_ for more details.
When using an in-memory SQLite database to run the tests, the same database When using an in-memory SQLite database to run the tests, the same database
connection will be shared by two threads in parallel: the thread in which connection will be shared by two threads in parallel: the thread in which
the live server is run, and the thread in which the test case is run. It is the live server is run and the thread in which the test case is run. It's
important to prevent simultaneous database queries via this shared important to prevent simultaneous database queries via this shared
connection by the two threads as that may sometimes cause the tests to connection by the two threads, as that may sometimes randomly cause the
randomly fail. So you need to ensure that the two threads do not access the tests to fail. So you need to ensure that the two threads don't access the
database at the same time. In particular, this means that in some cases database at the same time. In particular, this means that in some cases
(for example just after clicking a link or submitting a form) you might (for example, just after clicking a link or submitting a form), you might
need to check that a response is received by Selenium and that the next need to check that a response is received by Selenium and that the next
page is loaded before proceeding further with the execution of the tests. page is loaded before proceeding with further test execution.
This can be achieved, for example, by making Selenium wait until the Do this, for example, by making Selenium wait until the `<body>` HTML tag
`<body>` HTML tag is found in the response (requires Selenium > 2.13): is found in the response (requires Selenium > 2.13):
.. code-block:: python .. code-block:: python
@ -1891,13 +1891,12 @@ out the `full reference`_ for more details.
WebDriverWait(self.selenium, timeout).until( WebDriverWait(self.selenium, timeout).until(
lambda driver: driver.find_element_by_tag_name('body'), timeout=10) lambda driver: driver.find_element_by_tag_name('body'), timeout=10)
The difficult point is that there really is no such thing as a "page load", The tricky thing here is that there's really no such thing as a "page load,"
especially in modern Web apps that have dynamically-generated page especially in modern Web apps that generate HTML dynamically after the
components that do not exist in the HTML initially received from the server generates the initial document. So, simply checking for the presence
server. So simply checking for the presence of the `<body>` tag in the of `<body>` in the response might not necessarily be appropriate for all
response might not necessarily be appropriate for all use cases. Please use cases. Please refer to the `Selenium FAQ`_ and
refer to the `Selenium FAQ`_ and the `Selenium documentation`_ for more `Selenium documentation`_ for more information.
information on this topic.
.. _Selenium FAQ: http://code.google.com/p/selenium/wiki/FrequentlyAskedQuestions#Q:_WebDriver_fails_to_find_elements_/_Does_not_block_on_page_loa .. _Selenium FAQ: http://code.google.com/p/selenium/wiki/FrequentlyAskedQuestions#Q:_WebDriver_fails_to_find_elements_/_Does_not_block_on_page_loa
.. _Selenium documentation: http://seleniumhq.org/docs/04_webdriver_advanced.html#explicit-waits .. _Selenium documentation: http://seleniumhq.org/docs/04_webdriver_advanced.html#explicit-waits