New test

Author: IoannisPanagiotas

core/src/test/java/org/neo4j/gds/core/huge/NodeFilteredAdjacencyCursorTest.java

@@ -93,6 +93,18 @@ void shouldTestToInfinity(){
         assertThat(adjacencyCursor.peekVLong()).isEqualTo(AdjacencyCursor.NOT_FOUND);
     }
 
+    @Test
+    void shouldNotMissElementsInBetween(){
+        var inner = new TestAdjacencyCursor(List.of(1L,2L,3L));
+        var filterIdMap = new FilteredDirectIdMap(3, l -> l <=2);
+        var cursor = new NodeFilteredAdjacencyCursor(inner, filterIdMap);
+
+        cursor.init(0,0);
+        assertThat(cursor.nextVLong()).isEqualTo(1L);
+        assertThat(cursor.nextVLong()).isEqualTo(2L);
+        assertThat(cursor.nextVLong()).isEqualTo(AdjacencyCursor.NOT_FOUND);
+
+    }
     @Test
     void shouldAdvanceWithFilter() {
         assertThat(adjacencyCursor.advance(6L)).isEqualTo(6L);

core/src/test/java/org/neo4j/gds/core/huge/TestAdjacencyCursor.java

@@ -34,7 +34,7 @@ public class TestAdjacencyCursor implements AdjacencyCursor {
 
     @Override
     public void init(long index, int degree) {
-        this.cursor = targetIds.indexOf(index);
+        this.cursor = 0;
     }
 
     @Override