{
Article article = new Article();
org.junit.Assert.assertEquals( Double.valueOf( 0 ), article.calculateRate() );
article.incrementRate( 3L );
org.junit.Assert.assertEquals( Double.valueOf( 3 ), article.calculateRate() );
article.incrementRate( 5L );
org.junit.Assert.assertEquals( Double.valueOf( 4 ), article.calculateRate() );
article.incrementRate( 1L );