Add a11y test for lms student dashboard

common/test/acceptance/accessibility/test_lms_dashboard_axs.py

+"""
+Accessibility tests for LMS dashboard page.
+
+Run just this test with:
+SELENIUM_BROWSER=phantomjs paver test_bokchoy -d accessibility -t test_lms_dashboard_axs.py
+"""
+from ..tests.lms.test_lms_dashboard import LmsDashboardPageTest
+
+
+class LmsDashboardAxsTest(LmsDashboardPageTest):
+    """
+    Class to test lms student dashboard accessibility.
+    """
+
+    def test_dashboard_course_listings_axs(self):
+        """
+        Test the accessibility of the course listings
+        """
+        course_listings = self.dashboard_page.get_course_listings()
+        self.assertEqual(len(course_listings), 1)
+
+        report = self.dashboard_page.do_axs_audit()
+
+        # There was one page in this session
+        self.assertEqual(1, len(report))
+
+        result = report[0]
+        # Verify that this page has no accessibility errors.
+        self.assertEqual(0, len(result.errors))
+        # Verify that this page currently has 2 accessibility warnings.
+        self.assertEqual(2, len(result.warnings))
+        # And that these are the warnings that the page currently gives.
+        for warning in result.warnings:
+            self.assertTrue(
+                warning.startswith(('Warning: AX_FOCUS_01', 'Warning: AX_COLOR_01',)),
+                msg="Unexpected warning: {}".format(warning))