Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 35 insertions, 0 deletions

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+Debugging
+=========
+
+.. py:currentmodule:: marionette_driver.marionette
+
+Sometimes when working with Marionette you'll run into unexpected behaviour and
+need to do some debugging. This page outlines some of the Marionette methods
+that can be useful to you.
+
+Please note that the best tools for debugging are the `ones that ship with
+Gecko`_. This page doesn't describe how to use those with Marionette. Also see
+a related topic about `using the debugger with Marionette`_ on MDN.
+
+.. _ones that ship with Gecko: https://developer.mozilla.org/en-US/docs/Tools
+.. _using the debugger with Marionette: https://developer.mozilla.org/en-US/docs/Marionette/Debugging
+
+Seeing What's on the Page
+~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Sometimes it's difficult to tell what is actually on the page that is being
+manipulated. Either because it happens too fast, the window isn't big enough or
+you are manipulating a remote server! There are two methods that can help you
+out. The first is :func:`~Marionette.screenshot`::
+
+    marionette.screenshot() # takes screenshot of entire frame
+    elem = marionette.find_element(By.ID, 'some-div')
+    marionette.screenshot(elem) # takes a screenshot of only the given element
+
+Sometimes you just want to see the DOM layout. You can do this with the
+:attr:`~Marionette.page_source` property. Note that the page source depends on
+the context you are in::
+
+    print(marionette.page_source)
+    marionette.set_context('chrome')
+    print(marionette.page_source)