Learning Points - n89sharma/AxisAllies GitHub Wiki

Lombok equals only compares significant fields. Java compares object reference.

Following test was passing when unit was annotated with @Data.

Unit subA = buildUnitOfNation(TANK, GERMANY);
Unit subB = buildUnitOfNation(TANK, GERMANY);
assertThat(subA).isNotEqualTo(subB);

Single test run

Only run one test usign -Dtest=<TestClassName> argument. Check here.

Circular references

Circular references with lombok would fail when toString() (or hashing function is invoked) like the system print line in this case. Lombok will fail on recursion. Use exclude tag. See here.

    @Test
    public void stackOverflowTest2() {
        Node nodeA = new Node();
        Node nodeB = new Node();
        nodeA.setNextNode(nodeB);
        nodeB.setNextNode(nodeA);
//        System.out.println(nodeA);
        assertTrue(nodeA.getNextNode().equals(nodeB));
    }

    @Data
    private class Node {
        private Node nextNode;
    }

Stack overflow why?:

        Territory A = territoryMap.get("A");
        Territory B = territoryMap.get("B");
        Territory C = territoryMap.get("C");

        List<Territory> BC = new ArrayList<>();
        BC.add(B);
        BC.add(C);

        List<Territory> AC = new ArrayList<>();
        AC.add(A);
        AC.add(C);

        List<Territory> AB = new ArrayList<>();
        AB.add(A);
        AB.add(B);

        A.setNeighbours(BC);
        B.setNeighbours(AC);
        C.setNeighbours(AB);

Double brace initialization

ArrayList<String> list = new ArrayList<String>() {{
    add("A");
    add("B");
    add("C");
}};