include * on suffix query across all engines (#21)

Author: filipecosta90

benchmark.go

@@ -47,7 +47,7 @@ func SuffixBenchmark(terms []string, field string, idx index.Index, prefixMinLen
 			counter++
 			term = terms[counter%len(terms)]
 		}
-		term = term[len(term)-int(prefixSize):]
+		term = "*" + term[len(term)-int(prefixSize):]
 		q := query.NewQuery(idx.GetName(), term).Limit(0, 5).SetFlags(query.QueryTypeSuffix).SetField(field)
 		_, _, err := idx.SuffixQuery(*q, debug)
 		counter++

index/redisearch/redisearch.go

@@ -221,9 +221,6 @@ func (i *Index) FullTextQuerySingleField(q query.Query, verbose int) (docs []ind
 	if q.Flags&query.QueryTypePrefix != 0 && term[len(term)-1] != '*' {
 		term = fmt.Sprintf("%s*", term)
 	}
-	if q.Flags&query.QueryTypeSuffix != 0 && term[0] != '*' {
-		term = fmt.Sprintf("*%s", term)
-	}
 	queryParam := term
 	if q.Field != "" {
 		queryParam = fmt.Sprintf("@%s:%s", q.Field, term)