def test_view_helpfulness_chart(self, mozwebqa):
"""
Creates a new knowledge base article.
Verifies creation.
Deletes the article
"""
sumo_homepage = SupportHomePage(mozwebqa)
kb_article = KnowledgeBaseArticle(mozwebqa)
kb_article_history = KnowledgeBaseShowHistory(mozwebqa)
sumo_homepage.go_to_support_home_page()
sumo_homepage.click_first_top_issues_link()
kb_article.navigation.click_show_history()
# verify article history page loaded
Assert.true(kb_article_history.is_the_current_page)
kb_article_history.click_show_helpfulness_chart()
Assert.true(kb_article_history.is_helpfulness_chart_visible)
