public void CourseInputVerificationTest()
{
//Arange
bool expected = true;
bool expected2 = false;
bool expected3 = false;
//Act
var course = new Courses();
var actual = course.CourseInputVerification("CS1234");
var actual2 = course.CourseInputVerification("C$1234");
var actual3 = course.CourseInputVerification("CS$1234");
//Assert
Assert.AreEqual(expected, actual);
Assert.AreEqual(expected2, actual2);
Assert.AreEqual(expected3, actual3);
}