$$ Create a new Junit Test Class, GradebookTester.java, by $$

$1.$ Select the setUp and tearDown method.

$2.$ Select all of the methods of Gradebook, except for the constructor to create tests for.

$3.$ In the setUp method of GradebookTester, create at least two objects of Gradebook of size $5.$ Call the addScore method for each of the Gradebook classes at least twice $($but no more than $5$ times$).$

$4.$ In the teardown method of GradebookTester, set the two objects of Gradebook to null;

$5.$ Create test for the methods of Gradebook:

a$.$ addScore

i$.$ Use the toString method to compare the contents of what is in the scores array vs$.$ what is expected to be in the scores array

assertTrue$(...)$