helper code example

Example: helper

PAGINATION HELPER
PaginationHelper  used for implementation of pagination UI components and a set of Unit tests to properly test it.

TECHNOLOGIES
-Java 8
-Junit5 (junit.jupiter v5.8.0)

COMPONENTS OF PAGINATION HELPER
!! Zero Base Indexes!!

-Pagination Constructor :
 PaginationHelper(char[], int) :  Takes 2 parameters
    -items:char[]
    -itemsPerPage:int

-itemCount():int : returns counts of entire items
-pageCount():int : returns how many pages can be returns according to itemCount
-pageIndex(int):int : determines what page an item is on.
-pageItemCount(int):int : returns the number of items on the current page.

HOW TO TEST
-In the project under the test folder>java> create a test class.java
-Call you object from PaginationHelper in the test class
-Use @Test annotations from junit.jupiter
-Assertion use static imports from jupiter junit
    import static org.junit.jupiter.api.Assertions.assertEquals;
    import static org.junit.jupiter.api.Assertions.assertNotEquals;