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Use Map for node meta data.

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Oleksii Trekhleb
2018-05-31 07:59:20 +03:00
parent e572de63cb
commit 7a4265403c
5 changed files with 47 additions and 73 deletions
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28
src/data-structures/tree/__test__/BinaryTreeNode.test.js
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@@ -198,29 +198,13 @@ describe('BinaryTreeNode', () => {
});
it('should be possible to attach meta information to the node', () => {
const redNode = new BinaryTreeNode(1, { color: 'red' });
const blackNode = new BinaryTreeNode(2, { color: 'black' });
const redNode = new BinaryTreeNode(1);
const blackNode = new BinaryTreeNode(2);
expect(redNode.meta.color).toBe('red');
expect(blackNode.meta.color).toBe('black');
});
redNode.meta.set('color', 'red');
blackNode.meta.set('color', 'black');
it('should be possible to use get/set methods to change node meta information', () => {
const redNode = new BinaryTreeNode(1, { color: 'red' });
const blackNode = new BinaryTreeNode(2, { color: 'black' });
expect(redNode.getMeta('color')).toBe('red');
expect(blackNode.getMeta('color')).toBe('black');
redNode.setMeta('size', 8);
expect(redNode.getMeta('size')).toBe(8);
expect(redNode.getMeta('color')).toBe('red');
expect(redNode.getMeta('not_existing')).toBeNull();
// It must also be possible to override meta information.
redNode.setMeta('color', 'blue');
expect(redNode.getMeta('size')).toBe(8);
expect(redNode.getMeta('color')).toBe('blue');
expect(redNode.meta.get('color')).toBe('red');
expect(blackNode.meta.get('color')).toBe('black');
});
});