article_snippet: The test will begin in April as the  move comes in response to customers saying they wanted breakfast items outside of morning hours, according to McDonald.
article_snippet: Depending on how successful The test is, Fast-food chain could expand the all-day breakfast menu to other markets, according to Business Insider.
article_snippet: If the test is successful, McDonald could expand the all-day breakfast menu to other markets . '
highlights_snippet: Fast-food chain will begin test in April at select locations in San Diego .
  
highlights_snippet: If test is successful, all-day breakfast menu could expand to other markets .