java - testing the order of a collection -

given list of objects i'd test return in correct order, not assert entire object.

for example i'd verify they're in order by

id 1,  id 2, id 3, 

or in case

date mostrecent date older date oldest 

or in yet case

enum valuea enum valueb enum valuec 

basically want test sort specified went through correctly single property on object affects this, i'd specify test variant of hasfirstitem( withpropertyequalto ... has seconditem( withpropertyequalto

i know can write

 assertequals( property, list.get(0).id )  assertequals( property, list.get(1).id ) 

but i'd rather makes failure bit more obvious being sort issue, , perhaps declaratively, testing whole collection @ once. possible?

you should able use hamcrest's matcher hasproperty this:

public class foo {      private string a;      public foo(string a) {         this.a = a;     }      public object getstr() {         return a;     }       public static void main(string[] args) {         list<foo> l = arrays.aslist(new foo("a"), new foo("b"));         assert.assertthat(l, contains(hasproperty("str", equalto("a")),                                       hasproperty("str", equalto("b"))));     }  } 

where "str" name of property want check. note works methods named getxxx aimed test javabeans.