Exfoliate flaky studio home test.

common/test/acceptance/pages/studio/index.py

@@ -86,16 +86,21 @@ class DashboardPage(PageObject):
 
     def list_libraries(self):
         """
-        List all the libraries found on the page's list of libraries.
+        Click the tab to display the available libraries, and return detail of them.
         """
         # Workaround Selenium/Firefox bug: `.text` property is broken on invisible elements
         self.q(css='#course-index-tabs .libraries-tab a').click()
+        if self.q(css='.list-notices.libraries-tab').present:
+            # No libraries are available.
+            self.wait_for_element_visibility('.libraries-tab .new-library-button', "Switch to library tab")
+            return []
         div2info = lambda element: {
             'name': element.find_element_by_css_selector('.course-title').text,
             'org': element.find_element_by_css_selector('.course-org .value').text,
             'number': element.find_element_by_css_selector('.course-num .value').text,
             'url': element.find_element_by_css_selector('a.library-link').get_attribute('href'),
         }
+        self.wait_for_element_visibility('.libraries li.course-item', "Switch to library tab")
         return self.q(css='.libraries li.course-item').map(div2info).results
 
     def has_library(self, **kwargs):

common/test/acceptance/tests/studio/test_studio_home.py

@@ -24,7 +24,6 @@ class CreateLibraryTest(WebAppTest):
         self.auth_page = AutoAuthPage(self.browser, staff=True)
         self.dashboard_page = DashboardPage(self.browser)
 
-    @skip("Flaky test. See SOL-430")
     def test_create_library(self):
         """
         From the home page: