51 lines
2.0 KiB
TypeScript
51 lines
2.0 KiB
TypeScript
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import {Tree, TreeNode} from '../src/tree';
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describe('tree', () => {
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it("should return the root of the tree", () => {
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const t = new Tree<any>(new TreeNode<number>(1, []));
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expect(t.root).toEqual(1);
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});
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it("should return the parent of a node", () => {
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const t = new Tree<any>(new TreeNode<number>(1, [new TreeNode<number>(2, [])]));
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expect(t.parent(1)).toEqual(null);
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expect(t.parent(2)).toEqual(1);
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});
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it("should return the children of a node", () => {
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const t = new Tree<any>(new TreeNode<number>(1, [new TreeNode<number>(2, [])]));
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expect(t.children(1)).toEqual([2]);
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expect(t.children(2)).toEqual([]);
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});
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it("should return the first child of a node", () => {
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const t = new Tree<any>(new TreeNode<number>(1, [new TreeNode<number>(2, [])]));
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expect(t.firstChild(1)).toEqual(2);
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expect(t.firstChild(2)).toEqual(null);
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});
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it("should return the path to the root", () => {
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const t = new Tree<any>(new TreeNode<number>(1, [new TreeNode<number>(2, [])]));
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expect(t.pathFromRoot(2)).toEqual([1, 2]);
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});
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describe("contains", () => {
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it("should work", () => {
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const tree = new Tree<any>(
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new TreeNode<number>(1, [new TreeNode<number>(2, []), new TreeNode<number>(3, [])]));
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const subtree1 = new Tree<any>(new TreeNode<number>(1, []));
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const subtree2 = new Tree<any>(new TreeNode<number>(1, [new TreeNode<number>(2, [])]));
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const subtree3 = new Tree<any>(new TreeNode<number>(1, [new TreeNode<number>(3, [])]));
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const notSubtree1 = new Tree<any>(new TreeNode<number>(1, [new TreeNode<number>(4, [])]));
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const notSubtree2 = new Tree<any>(
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new TreeNode<number>(1, [new TreeNode<number>(2, [new TreeNode<number>(4, [])])]));
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expect(tree.contains(subtree1)).toEqual(true);
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expect(tree.contains(subtree2)).toEqual(true);
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expect(tree.contains(subtree3)).toEqual(true);
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expect(tree.contains(notSubtree1)).toEqual(false);
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expect(tree.contains(notSubtree2)).toEqual(false);
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});
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});
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});
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