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Improve test-coverage for red-black tree.

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This commit is contained in:
Oleksii Trekhleb 2018-06-02 08:24:31 +03:00
parent 19789c6a94
commit 26d6b7877d
1 changed files with 26 additions and 0 deletions
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26
src/data-structures/tree/red-black-tree/__test__/RedBlackTree.test.js
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@ -285,4 +285,30 @@ describe('RedBlackTree', () => {
expect(tree.isNodeRed(node3)).toBeTruthy();
expect(tree.isNodeRed(node6)).toBeTruthy();
});
it('should do left-left rotation with left grand-parent', () => {
const tree = new RedBlackTree();
tree.insert(20);
tree.insert(15);
tree.insert(25);
tree.insert(10);
tree.insert(5);
expect(tree.toString()).toBe('5,10,15,20,25');
expect(tree.root.height).toBe(2);
});
it('should do right-right rotation with left grand-parent', () => {
const tree = new RedBlackTree();
tree.insert(20);
tree.insert(15);
tree.insert(25);
tree.insert(17);
tree.insert(19);
expect(tree.toString()).toBe('15,17,19,20,25');
expect(tree.root.height).toBe(2);
});
});