Mathjax rendering test failing on Firefox 57

Description

Reference for Bok Choy upgrade process: https://openedx.atlassian.net/wiki/spaces/TE/pages/567083109/Firefox+57+upgrade+for+Bok+Choy+tests

Description: As part of the Firefox upgrade on Jenkins, the following tests are failing, and need to be fixed

Error Msg:

1 AssertionError: u'Text line 1\ne[n]=d1\nText line 2\ne[n]=d2' != 'Text line 1\nText line 2'

Stack trace

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 self = <common.test.acceptance.tests.discussion.test_discussion.DiscussionEditorPreviewTest testMethod=test_mathjax_rendering_in_order> def test_mathjax_rendering_in_order(self): """ Tests that mathjax is rendered in proper order. When user types mathjax expressions into discussion editor, it should render in the proper order. """ self.page.set_new_post_editor_value( 'Text line 1 \n' '$$e[n]=d_1$$ \n' 'Text line 2 \n' '$$e[n]=d_2$$' ) > self.assertEqual(self.page.get_new_post_preview_text(), 'Text line 1\nText line 2') E AssertionError: u'Text line 1\ne[n]=d1\nText line 2\ne[n]=d2' != 'Text line 1\nText line 2' common/test/acceptance/tests/discussion/test_discussion.py:995: AssertionError

Link to failing build: https://build.testeng.edx.org/job/edx-platform-test-subset/1100576/

Tests Impacted:

acceptance.tests.discussion.test_discussion.DiscussionEditorPreviewTest.test_mathjax_rendering_in_order

Steps to Reproduce

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Current Behavior

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Expected Behavior

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Reason for Variance

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Status

Assignee

Mike Youngstrom

Reporter

Stuart Young

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Priority

CAT-3
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