Test cases for Schedule APis

[PoojaRemesh]

• Implement test cases for the the schedule service apis
• Mockito is used to mock data

[PoojaRemesh]

• Task completed.
• Included both successful and negative test cases for all schedule service apis
• Schedule controller tests has 100% class and method coverage with 96% line coverage
• Schedule service tests has 100% class and method coverage with 94% line coverage