@Test
public void emptyRoot() throws Exception {
SortingNode<Long> emptyRoot = SortingNode.emptyRoot();
assertFalse(emptyRoot.hasChild());
assertTrue(emptyRoot.isRoot());
assertFalse(emptyRoot.hasParent());
}
@Test
public void toStringShouldNotIncludeParent() throws Exception {
SortingNode<Integer> tree =
new SortingNode.Builder<Integer>() //
.childNode(200)
.siblingNode(210)
.siblingNode(220)
.build();
assertNotNull("include parent in toString will go infinite loop", tree.toString());
}
@Test
public void depthFirst() throws Exception {
assertEquals(
Collections.<Integer>emptyList(),
SortingNode.<Integer>emptyRoot().depthFirst().collect(toList()));
SortingNode<Integer> tree =
new SortingNode.Builder<Integer>() //
.childNode(100)
.siblingNode(200)
.childNode(210)
.siblingNode(220)
.parent()
.siblingNode(300)
.siblingNode(400)
.childNode(410)
.siblingNode(420)
.siblingNode(430)
.childNode(431)
.build();
assertEquals(
asList(100, 200, 210, 220, 300, 400, 410, 420, 430, 431),
tree.depthFirst().collect(toList()));
SortingNode<Integer> n400 = tree.getChildren().get(3);
assertEquals(asList(400, 410, 420, 430, 431), n400.depthFirst().collect(toList()));
}
@Test
public void deepSort() throws Exception {
SortingNode<Integer> tree =
new SortingNode.Builder<Integer>() //
.childNode(200)
.siblingNode(100)
.childNode(110)
.siblingNode(120)
.parent()
.siblingNode(400)
.childNode(410)
.siblingNode(430)
.childNode(431)
.parent()
.siblingNode(420)
.parent()
.siblingNode(300)
.build();
tree = tree.deepSort((a, b) -> b.getValue() - a.getValue());
String expected =
""
+ "*\n"
+ " 400\n"
+ " 430\n"
+ " 431\n"
+ " 420\n"
+ " 410\n"
+ " 300\n"
+ " 200\n"
+ " 100\n"
+ " 120\n"
+ " 110";
assertEquals(expected, tree.prettyPrint());
}
@Test
public void buildNodeTree() throws Exception {
SortingNode<String> root = new SortingNode.Builder<String>().build();
assertFalse(root.hasChild());
assertTrue(root.isRoot());
assertFalse(root.hasParent());
SortingNode<Integer> tree =
new SortingNode.Builder<Integer>() //
.childNode(100)
.siblingNode(200)
.childNode(210)
.siblingNode(220)
.parent()
.siblingNode(300)
.siblingNode(400)
.childNode(410)
.siblingNode(420)
.siblingNode(430)
.childNode(431)
.build();
assertFalse(tree.hasParent());
assertTrue(tree.isRoot());
assertFalse(tree.hasParent());
String expected =
""
+ "*\n"
+ " 100\n"
+ " 200\n"
+ " 210\n"
+ " 220\n"
+ " 300\n"
+ " 400\n"
+ " 410\n"
+ " 420\n"
+ " 430\n"
+ " 431";
assertEquals(expected, tree.prettyPrint());
SortingNode<Integer> n410 = tree.getChildren().get(3).getChildren().get(0);
assertFalse(n410.hasChild());
assertTrue(n410.hasParent());
assertFalse(n410.isRoot());
assertEquals("410", n410.prettyPrint());
}