352 lines
14 KiB
TypeScript
352 lines
14 KiB
TypeScript
import { describe, it, expect } from 'vitest';
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import { createRegion, createRegionAxis, applyAlign, shuffle, moveToRegion, type Region, type RegionAxis } from '@/core/region';
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import { createRNG } from '@/utils/rng';
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import { type Part } from '@/core/part';
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describe('Region', () => {
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function createTestRegion(axes: RegionAxis[], parts: Part[]): { region: Region; parts: Record<string, Part> } {
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const partsMap: Record<string, Part> = {};
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for (const p of parts) {
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partsMap[p.id] = { ...p };
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}
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const region = createRegion('region1', axes);
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region.childIds = parts.map(p => p.id);
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region.partMap = Object.fromEntries(
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parts.map(p => [p.position.join(','), p.id])
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);
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return { region, parts: partsMap };
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}
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describe('applyAlign', () => {
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it('should do nothing with empty region', () => {
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const { region } = createTestRegion([{ name: 'x', min: 0, align: 'start' }], []);
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applyAlign(region, {});
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expect(region.childIds).toHaveLength(0);
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});
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it('should align parts to start on first axis', () => {
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const part1: Part = { id: 'p1', regionId: 'region1', position: [5, 10] };
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const part2: Part = { id: 'p2', regionId: 'region1', position: [7, 20] };
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const part3: Part = { id: 'p3', regionId: 'region1', position: [2, 30] };
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const { region, parts } = createTestRegion(
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[{ name: 'x', min: 0, align: 'start' }, { name: 'y' }],
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[part1, part2, part3]
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);
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applyAlign(region, parts);
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expect(parts[region.childIds[0]].position[0]).toBe(0);
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expect(parts[region.childIds[1]].position[0]).toBe(1);
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expect(parts[region.childIds[2]].position[0]).toBe(2);
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expect(parts[region.childIds[0]].position[1]).toBe(30);
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expect(parts[region.childIds[1]].position[1]).toBe(10);
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expect(parts[region.childIds[2]].position[1]).toBe(20);
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});
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it('should align parts to start with custom min', () => {
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const part1: Part = { id: 'p1', regionId: 'region1', position: [5, 100] };
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const part2: Part = { id: 'p2', regionId: 'region1', position: [7, 200] };
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const { region, parts } = createTestRegion(
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[{ name: 'x', min: 10, align: 'start' }, { name: 'y' }],
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[part1, part2]
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);
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applyAlign(region, parts);
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expect(parts[region.childIds[0]].position[0]).toBe(10);
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expect(parts[region.childIds[1]].position[0]).toBe(11);
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expect(parts[region.childIds[0]].position[1]).toBe(100);
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expect(parts[region.childIds[1]].position[1]).toBe(200);
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});
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it('should align parts to end on first axis', () => {
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const part1: Part = { id: 'p1', regionId: 'region1', position: [2, 50] };
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const part2: Part = { id: 'p2', regionId: 'region1', position: [4, 60] };
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const part3: Part = { id: 'p3', regionId: 'region1', position: [1, 70] };
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const { region, parts } = createTestRegion(
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[{ name: 'x', max: 10, align: 'end' }, { name: 'y' }],
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[part1, part2, part3]
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);
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applyAlign(region, parts);
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expect(parts[region.childIds[0]].position[0]).toBe(8);
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expect(parts[region.childIds[1]].position[0]).toBe(9);
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expect(parts[region.childIds[2]].position[0]).toBe(10);
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});
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it('should align parts to center on first axis', () => {
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const part1: Part = { id: 'p1', regionId: 'region1', position: [0, 5] };
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const part2: Part = { id: 'p2', regionId: 'region1', position: [1, 6] };
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const part3: Part = { id: 'p3', regionId: 'region1', position: [2, 7] };
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const { region, parts } = createTestRegion(
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[{ name: 'x', min: 0, max: 10, align: 'center' }, { name: 'y' }],
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[part1, part2, part3]
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);
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applyAlign(region, parts);
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expect(parts[region.childIds[0]].position[0]).toBe(4);
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expect(parts[region.childIds[1]].position[0]).toBe(5);
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expect(parts[region.childIds[2]].position[0]).toBe(6);
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});
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it('should handle even count center alignment', () => {
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const part1: Part = { id: 'p1', regionId: 'region1', position: [0, 10] };
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const part2: Part = { id: 'p2', regionId: 'region1', position: [1, 20] };
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const { region, parts } = createTestRegion(
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[{ name: 'x', min: 0, max: 10, align: 'center' }, { name: 'y' }],
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[part1, part2]
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);
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applyAlign(region, parts);
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expect(parts[region.childIds[0]].position[0]).toBe(4.5);
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expect(parts[region.childIds[1]].position[0]).toBe(5.5);
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});
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it('should sort children by position on current axis', () => {
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const part1: Part = { id: 'p1', regionId: 'region1', position: [5, 100] };
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const part2: Part = { id: 'p2', regionId: 'region1', position: [1, 200] };
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const part3: Part = { id: 'p3', regionId: 'region1', position: [3, 300] };
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const { region, parts } = createTestRegion(
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[{ name: 'x', min: 0, align: 'start' }, { name: 'y' }],
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[part1, part2, part3]
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);
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applyAlign(region, parts);
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expect(region.childIds[0]).toBe('p2');
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expect(region.childIds[1]).toBe('p3');
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expect(region.childIds[2]).toBe('p1');
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});
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it('should align on multiple axes', () => {
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const part1: Part = { id: 'p1', regionId: 'region1', position: [5, 10] };
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const part2: Part = { id: 'p2', regionId: 'region1', position: [7, 20] };
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const part3: Part = { id: 'p3', regionId: 'region1', position: [2, 30] };
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const { region, parts } = createTestRegion(
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[
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{ name: 'x', min: 0, align: 'start' },
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{ name: 'y', min: 0, align: 'start' }
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],
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[part1, part2, part3]
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);
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applyAlign(region, parts);
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expect(region.childIds[0]).toBe('p3');
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expect(parts[region.childIds[0]].position).toEqual([0, 2]);
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expect(region.childIds[1]).toBe('p1');
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expect(parts[region.childIds[1]].position).toEqual([1, 0]);
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expect(region.childIds[2]).toBe('p2');
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expect(parts[region.childIds[2]].position).toEqual([2, 1]);
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});
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it('should align 4 elements on rectangle corners', () => {
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const part1: Part = { id: 'p1', regionId: 'region1', position: [0, 0] };
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const part2: Part = { id: 'p2', regionId: 'region1', position: [10, 0] };
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const part3: Part = { id: 'p3', regionId: 'region1', position: [10, 1] };
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const part4: Part = { id: 'p4', regionId: 'region1', position: [0, 1] };
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const { region, parts } = createTestRegion(
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[
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{ name: 'x', min: 0, max: 10, align: 'start' },
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{ name: 'y', min: 0, max: 10, align: 'start' }
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],
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[part1, part2, part3, part4]
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);
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applyAlign(region, parts);
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expect(region.childIds[0]).toBe('p1');
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expect(parts[region.childIds[0]].position).toEqual([0, 0]);
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expect(region.childIds[1]).toBe('p4');
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expect(parts[region.childIds[1]].position).toEqual([0, 1]);
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expect(region.childIds[2]).toBe('p2');
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expect(parts[region.childIds[2]].position).toEqual([1, 0]);
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expect(region.childIds[3]).toBe('p3');
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expect(parts[region.childIds[3]].position).toEqual([1, 1]);
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});
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});
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describe('shuffle', () => {
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it('should do nothing with empty region', () => {
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const { region, parts } = createTestRegion([], []);
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const rng = createRNG(42);
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shuffle(region, parts, rng);
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expect(region.childIds).toHaveLength(0);
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});
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it('should do nothing with single part', () => {
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const part: Part = { id: 'p1', regionId: 'region1', position: [0, 0, 0] };
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const { region, parts } = createTestRegion([], [part]);
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const rng = createRNG(42);
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shuffle(region, parts, rng);
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expect(parts['p1'].position).toEqual([0, 0, 0]);
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});
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it('should shuffle positions of multiple parts', () => {
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const part1: Part = { id: 'p1', regionId: 'region1', position: [0, 100] };
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const part2: Part = { id: 'p2', regionId: 'region1', position: [1, 200] };
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const part3: Part = { id: 'p3', regionId: 'region1', position: [2, 300] };
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const { region, parts } = createTestRegion([], [part1, part2, part3]);
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const rng = createRNG(42);
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const originalPositions = region.childIds.map(id => [...parts[id].position]);
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shuffle(region, parts, rng);
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const newPositions = region.childIds.map(id => parts[id].position);
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originalPositions.forEach(origPos => {
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const found = newPositions.some(newPos =>
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newPos[0] === origPos[0] && newPos[1] === origPos[1]
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);
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expect(found).toBe(true);
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});
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});
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it('should be deterministic with same seed', () => {
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const createPartsForTest = (): Part[] => [
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{ id: 'p1', regionId: 'region1', position: [0, 10] },
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{ id: 'p2', regionId: 'region1', position: [1, 20] },
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{ id: 'p3', regionId: 'region1', position: [2, 30] },
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];
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const setup1 = createTestRegion([], createPartsForTest());
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const setup2 = createTestRegion([], createPartsForTest());
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const rng1 = createRNG(42);
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const rng2 = createRNG(42);
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shuffle(setup1.region, setup1.parts, rng1);
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shuffle(setup2.region, setup2.parts, rng2);
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const positions1 = setup1.region.childIds.map(id => setup1.parts[id].position);
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const positions2 = setup2.region.childIds.map(id => setup2.parts[id].position);
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expect(positions1).toEqual(positions2);
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});
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it('should produce different results with different seeds', () => {
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const createPartsForTest = (): Part[] => [
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{ id: 'p1', regionId: 'region1', position: [0, 10] },
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{ id: 'p2', regionId: 'region1', position: [1, 20] },
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{ id: 'p3', regionId: 'region1', position: [2, 30] },
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{ id: 'p4', regionId: 'region1', position: [3, 40] },
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{ id: 'p5', regionId: 'region1', position: [4, 50] },
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];
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const results = new Set<string>();
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for (let seed = 1; seed <= 10; seed++) {
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const setup = createTestRegion([], createPartsForTest());
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const rng = createRNG(seed);
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shuffle(setup.region, setup.parts, rng);
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const positions = JSON.stringify(setup.region.childIds.map(id => setup.parts[id].position));
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results.add(positions);
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}
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expect(results.size).toBeGreaterThan(5);
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});
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});
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describe('moveToRegion', () => {
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it('should move a part from one region to another', () => {
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const sourceAxes: RegionAxis[] = [{ name: 'x', min: 0, max: 5 }];
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const targetAxes: RegionAxis[] = [{ name: 'x', min: 0, max: 5 }];
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const sourceRegion = createRegion('source', sourceAxes);
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const targetRegion = createRegion('target', targetAxes);
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const part: Part = { id: 'p1', regionId: 'source', position: [2] };
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const parts: Record<string, Part> = { p1: part };
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sourceRegion.childIds.push('p1');
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sourceRegion.partMap['2'] = 'p1';
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expect(sourceRegion.childIds).toHaveLength(1);
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expect(targetRegion.childIds).toHaveLength(0);
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expect(part.regionId).toBe('source');
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moveToRegion(part, sourceRegion, targetRegion, [0]);
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expect(sourceRegion.childIds).toHaveLength(0);
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expect(targetRegion.childIds).toHaveLength(1);
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expect(part.regionId).toBe('target');
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expect(part.position).toEqual([0]);
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});
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it('should keep existing position if no position provided', () => {
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const sourceRegion = createRegion('source', [{ name: 'x' }]);
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const targetRegion = createRegion('target', [{ name: 'x' }]);
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const part: Part = { id: 'p1', regionId: 'source', position: [3] };
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const parts: Record<string, Part> = { p1: part };
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sourceRegion.childIds.push('p1');
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sourceRegion.partMap['3'] = 'p1';
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moveToRegion(part, sourceRegion, targetRegion);
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expect(part.position).toEqual([3]);
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});
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});
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});
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describe('createRegionAxis', () => {
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it('should create axis with name only', () => {
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const axis = createRegionAxis('x');
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expect(axis.name).toBe('x');
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expect(axis.min).toBeUndefined();
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expect(axis.max).toBeUndefined();
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expect(axis.align).toBeUndefined();
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});
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it('should create axis with min and max', () => {
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const axis = createRegionAxis('y', 0, 10);
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expect(axis.name).toBe('y');
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expect(axis.min).toBe(0);
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expect(axis.max).toBe(10);
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});
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it('should create axis with align start', () => {
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const axis = createRegionAxis('x', 0, 5, 'start');
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expect(axis.name).toBe('x');
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expect(axis.min).toBe(0);
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expect(axis.max).toBe(5);
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expect(axis.align).toBe('start');
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});
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it('should create axis with align end', () => {
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const axis = createRegionAxis('x', undefined, 10, 'end');
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expect(axis.name).toBe('x');
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expect(axis.max).toBe(10);
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expect(axis.align).toBe('end');
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});
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it('should create axis with align center', () => {
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const axis = createRegionAxis('x', 0, 10, 'center');
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expect(axis.name).toBe('x');
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expect(axis.min).toBe(0);
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expect(axis.max).toBe(10);
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expect(axis.align).toBe('center');
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});
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});
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