13a0d65841
New domain-agnostic bottom-up tidy-tree module (Reingold-Tilford contour pack)
operating on abstract { id, width, children } nodes — zero generated-API
imports. First rung of the TDD ladder: a single leaf lays out at x=0. The full
contour/centring machinery is in place; subsequent commits add tests that
exercise it.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
20 lines
573 B
TypeScript
20 lines
573 B
TypeScript
import { describe, it, expect } from 'vitest';
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import { layoutForest, type TidyNode } from './tidyTree';
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// tidyTree is domain-agnostic: it lays out abstract { id, width, children }
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// nodes, so these tests use hand-built trees with no PersonNodeDTO import.
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const W = 160;
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const GAP = 40;
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function leaf(id: string, width = W): TidyNode {
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return { id, width, children: [] };
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}
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describe('tidyTree — leaf base case', () => {
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it('a single leaf lays out at x = 0', () => {
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const a = leaf('a');
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const x = layoutForest([a], GAP);
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expect(x.get('a')).toBe(0);
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});
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});
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