gadm-ts/dist/__tests__/tree.test.js
2026-03-23 17:35:02 +01:00

118 lines
13 KiB
JavaScript

/**
* GADMTree tests — builds trees and saves results to tests/tree/ for inspection.
*/
import { describe, it, expect } from 'vitest';
import { buildTree, findNode, walkDFS, walkLevel, leaves } from '../tree.js';
import { writeFileSync, mkdirSync } from 'fs';
import { resolve } from 'path';
const CACHE_DIR = resolve('tests', 'cache', 'gadm');
const OUT_DIR = resolve('tests', 'tree');
function save(name, data) {
mkdirSync(OUT_DIR, { recursive: true });
const fp = resolve(OUT_DIR, name);
writeFileSync(fp, JSON.stringify(data, null, 2), 'utf-8');
console.log(` → saved tests/tree/${name}`);
}
describe('GADMTree', () => {
it('Spain → Cataluña', async () => {
const tree = await buildTree({ name: 'Cataluña', cacheDir: CACHE_DIR });
expect(tree.root.name).toBe('Cataluña');
expect(tree.root.gid).toBe('ESP.6_1');
expect(tree.root.level).toBe(1);
expect(tree.maxLevel).toBeGreaterThanOrEqual(4);
expect(tree.nodeCount).toBeGreaterThan(900);
// 4 provinces
expect(tree.root.children.length).toBe(4);
expect(tree.root.children.map(c => c.name)).toContain('Barcelona');
// Barcelona sub-regions
const bcn = tree.root.children.find(c => c.name === 'Barcelona');
expect(bcn.children.length).toBeGreaterThan(5);
// Leaves = municipalities
const leafNodes = [...leaves(tree.root)];
expect(leafNodes.length).toBeGreaterThan(900);
console.log(`Cataluña: ${tree.nodeCount} nodes, ${leafNodes.length} leaves, max L${tree.maxLevel}`);
save('test-cataluna.json', tree);
});
it('Germany (full country)', async () => {
const tree = await buildTree({ admin: 'DEU', cacheDir: CACHE_DIR });
expect(tree.root.name).toBe('Germany');
expect(tree.root.level).toBe(0);
expect(tree.root.children.length).toBe(16); // 16 Bundesländer
console.log(`Germany: ${tree.nodeCount} nodes, ${tree.root.children.length} Bundesländer`);
save('test-germany-summary.json', {
name: tree.root.name,
gid: tree.root.gid,
maxLevel: tree.maxLevel,
nodeCount: tree.nodeCount,
level1: tree.root.children.map(c => ({
name: c.name,
gid: c.gid,
childCount: c.children.length,
})),
});
});
it('Germany → Sachsen → Dresden', async () => {
const tree = await buildTree({ admin: 'DEU', cacheDir: CACHE_DIR });
const sachsen = findNode(tree.root, 'Sachsen');
expect(sachsen).toBeDefined();
expect(sachsen.children.length).toBe(13);
const dresden = findNode(tree.root, 'Dresden');
expect(dresden).toBeDefined();
// Walk subtree
const nodes = [...walkDFS(dresden)];
const leafNodes = [...leaves(dresden)];
console.log(`Dresden: ${dresden.gid}, L${dresden.level}, ${nodes.length} nodes, ${leafNodes.length} leaves`);
console.log(` Sachsen L2: ${sachsen.children.map(c => c.name).join(', ')}`);
save('test-dresden.json', {
sachsen: {
name: sachsen.name,
gid: sachsen.gid,
children: sachsen.children.map(c => c.name),
},
dresden: {
name: dresden.name,
gid: dresden.gid,
level: dresden.level,
totalNodes: nodes.length,
leaves: leafNodes.map(l => ({ name: l.name, gid: l.gid })),
children: dresden.children.map(c => ({
name: c.name,
gid: c.gid,
children: c.children.map(gc => ({ name: gc.name, gid: gc.gid })),
})),
},
});
});
it('cache hit is fast', async () => {
const t0 = Date.now();
const tree = await buildTree({ name: 'Cataluña', cacheDir: CACHE_DIR });
const ms = Date.now() - t0;
expect(tree.root.name).toBe('Cataluña');
expect(ms).toBeLessThan(500);
console.log(`Cache hit: ${ms}ms`);
});
it('iterators: DFS, walkLevel, findNode', async () => {
const tree = await buildTree({ name: 'Cataluña', cacheDir: CACHE_DIR });
// DFS visits every node
let count = 0;
for (const _ of walkDFS(tree.root))
count++;
expect(count).toBe(tree.nodeCount);
// Level 2 = provinces
const provinces = [...walkLevel(tree.root, 2)];
expect(provinces.length).toBe(4);
// findNode by name
const bcn = findNode(tree.root, 'Barcelona');
expect(bcn?.gid).toBe('ESP.6.1_1');
// findNode by GID
const girona = findNode(tree.root, 'ESP.6.2_1');
expect(girona?.name).toBe('Girona');
save('test-iterators.json', {
dfsCount: count,
nodeCount: tree.nodeCount,
provinces: provinces.map(p => ({ name: p.name, gid: p.gid })),
barcelona: { name: bcn.name, gid: bcn.gid, children: bcn.children.length },
});
});
});
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