Resolve "Searchpage controller verification"

Closes #28

See merge request !24

Resolve "Integration test for searchpage API"

Closes #27

See merge request !23

didn't use nested class, create new test class instead. BeforeAll doesn't work in nested class, TestInstance annotation doesn't work for static problem.

Resolve "Integration test for Homepage and User API"

Closes #26

See merge request !22

Resolve "search controller and service - unit test"

Closes #19

See merge request !21

Resolve "temp6"

Closes #17

See merge request !20

# Conflicts:
#   src/main/java/com/example/freshonline/controller/CategoryController.java

Resolve "temp5"

Closes #16

See merge request !19

Resolve "temp03"

Closes #15

See merge request !18