you're working on a system that helps to manage tasks on a todo list. Your job is to implement an endpoint that allows these tasks to be updated. with java and spring boot.

Although the solution posted here on cheggis valid, there are three unit tests that are not handled as expected:

$1$: expected not found error instead of warning with text:

com.codility.tasks.hibernate.solution.HibernateTaskApplicationTests $-$ should$\_$return$\_$not$\_$found$\_$message$\_$when$\_$id$\_$not$\_$exist

Output $($stderr$)$:

java.lang.AssertionError: No value at JSON path $"$$$.$message"

at com.codility.tasks.hibernate.solution.HibernateTaskApplicationTests.should$\_$return$\_$not$\_$found$\_$message$\_$when$\_$id$\_$not$\_$exist$($HibernateTaskApplicationTests$.$java:$106)$

Caused by: java.lang.IllegalArgumentException: json can not be null or empty

at com.codility.tasks.hibernate.solution.HibernateTaskApplicationTests.should$\_$return$\_$not$\_$found$\_$message$\_$when$\_$id$\_$not$\_$exist$($HibernateTaskApplicationTests$.$java:$106)$

Output:

$[$WARN$]$

MockHttpServletRequest:

HTTP Method $=$ PUT

Request URI $=/$tasks$/10$

Parameters $=\{\}$

Headers $=\{$Content$-$Type$=[$application$/$json;charset$=$UTF$-8]\}$

Body $=\{"$description$"$:"new description","priority":$15\}$

Session Attrs $=\{\}$

Handler:

Type $=$ com.codility.tasks.hibernate.solution.TaskController

Method $=$ public org.springframework.http$.$ResponseEntity com.codility.tasks.hibernate.solution.TaskController.updateTask$($java$.$lang.Long,com.codility.tasks.hibernate.solution.Task$)$

Async:

Async started $=$ false

Async result $=$ null

Resolved Exception:

Type $=$ null

ModelAndView:

View name $=$ null

View $=$ null

Model $=$ null

FlashMap:

Attributes $=$ null

MockHttpServletResponse:

Status $=404$

Error message $=$ null

Headers $=\{\}$

Content type $=$ null

Body $=$

Forwarded URL $=$ null

Redirected URL $=$ null

Cookies $=[]$

WRONG ANSWER

$2$: Not handling empty description exception:

com.codility.tasks.hibernate.solution.HibernateTaskApplicationTests $-$ should$\_$return$\_$bad$\_$request$\_$status$\_$when$\_$description$\_$is$\_$empty

Output $($stderr$)$:

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.springframework.dao.DataIntegrityViolationException: could not execute statement; SQL $[$n$/$a$]$; constraint $[$null$]$; nested exception is org.hibernate.exception.ConstraintViolationException: could not execute statement

at com.codility.tasks.hibernate.solution.HibernateTaskApplicationTests.should$\_$return$\_$bad$\_$request$\_$status$\_$when$\_$description$\_$is$\_$empty$($HibernateTaskApplicationTests$.$java:$119)$

Caused by: org.springframework.dao.DataIntegrityViolationException: could not execute statement; SQL $[$n$/$a$]$; constraint $[$null$]$; nested exception is org.hibernate.exception.ConstraintViolationException: could not execute statement

at com.codility.tasks.hibernate.solution.HibernateTaskApplicationTests.should$\_$return$\_$bad$\_$request$\_$status$\_$when$\_$description$\_$is$\_$empty$($HibernateTaskApplicationTests$.$java:$119)$

Caused by: org.hibernate.exception.ConstraintViolationException: could not execute statement

at com.codility.tasks.hibernate.solution.HibernateTaskApplicationTests.should$\_$return$\_$bad$\_$request$\_$status$\_$when$\_$description$\_$is$\_$empty$($HibernateTaskApplicationTests$.$java:$119)$

Caused by: org.h$2.$jdbc$.$JdbcSQLException:

NULL not allowed for column "DESCRIPTION"; SQL statement:

update task set description$=?,$ priority$=?$ where id$=?[23502-197]$

at com.codility.tasks.hibernate.solution.HibernateTaskApplicationTests.should$\_$return$\_$bad$\_$request$\_$status$\_$when$\_$description$\_$is$\_$empty$($HibernateTaskApplicationTests$.$java:$119)$

Output:

$[$WARN$]$ org.hibernate.engine.jdbc$.$spi.SqlExceptionHelper $-$ SQL Error: $23502,$ SQLState: $23502$

$[$ERROR$]$ org.hibernate.engine.jdbc$.$spi.SqlExceptionHelper $-$ NULL not allowed for column "DESCRIPTION"; SQL statement:

update task set description$=?,$ priority$=?$ where id$=?[23502-197]$

$[$ERROR$]$ org.hibernate.internal.ExceptionMapperStandardImpl $-$ HHH$000346$: Error during managed flush $[$org$.$hibernate.exception.ConstraintViolationException: could not execute statement$]$

MockHttpServletRequest:

HTTP Method $=$ PUT

Request URI $=/$tasks$/10$

Parameters $=\{\}$

Headers $=\{$Content$-$Type$=[$application$/$json;charset$=$UTF$-8]\}$

Body $=\{"$description$"$:"new description","priority":$15\}$

Session Attrs $=\{\}$

Handler:

Type $=$ com.codility.tasks.hibernate.solution.TaskController

Method $=$ public org.springframework.http$.$ResponseEntity com.codility.tasks.hibernate.solution.TaskController.updateTask$($java$.$lang.Long,com.codility.tasks.hibernate.solution.Task$)$

Async:

Async started $=$ false

Async result $=$ null

Resolved Exception:

Type $=$ null

ModelAndView:

View name $=$ null

View $=$ null

Model $=$ null

FlashMap:

Attributes $=$ null

MockHttpServletRespon