Use Filter object in testBehaviourWhenHugeBioReader

Since the function testBehaviourWhenHugeBioReader in testFilter was
using pair and not Filter object, it now use the filter object getter for
the pair.

For more informations, see #3283.

algo/tests/unit-tests/testFilter.cpp

@@ -462,10 +462,12 @@ void testExAequoKmersWhenSignificantParameter(){
 
 void testBehaviourWhenHugeBioReader(){
   BioReader hugeBioReader;
+  FilterWithACAutomaton *f;
   hugeBioReader.add("../../germline/homo-sapiens/IGHV.fa");
   hugeBioReader.add("../../germline/homo-sapiens/IGLV.fa");
   pair<vector<int>*,AbstractACAutomaton<KmerAffect>*>* p;
-  p = buildACAutomatonToFilterBioReader(hugeBioReader, "#########");
+  f = new FilterWithACAutomaton(hugeBioReader, "#########");
+  p = f->getPair();
   TAP_TEST(!p, TEST_FILTER_BIOREADER_WITH_AC_AUTOMATON,
     "Automaton should not be constructed on a BioReader containing more than 127 sequences.");
 }