@Test
 public void printBoxPlot() {
   assertEquals(output, graph.printBoxPlot());
 }
 @Test
 public void printBoxPlotBody() {
   assertEquals(output.split("\n")[3], graph.printBoxPlotBody());
 }
 @Test
 public void printLowerEdge() {
   assertEquals(output.split("\n")[4], graph.printLowerEdge());
 }
 @Test
 public void printNumberLine() {
   assertEquals(output.split("\n")[1], graph.printNumberLine());
 }