277 lines
11 KiB
TypeScript
277 lines
11 KiB
TypeScript
import { describe, it, expect } from 'vitest';
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import { applyAlign, shuffle, type Region, type RegionAxis } from '../../src/core/region';
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import { createRNG } from '../../src/utils/rng';
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import { entity, Entity } from '../../src/utils/entity';
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import { type Part } from '../../src/core/part';
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describe('Region', () => {
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function createTestRegion(axes: RegionAxis[], parts: Part[]): Entity<Region> {
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const partEntities = parts.map(p => entity(p.id, p));
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return entity('region1', {
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id: 'region1',
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axes: [...axes],
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children: partEntities,
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});
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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.value.children).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', region: null as any, position: [5, 10] };
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const part2: Part = { id: 'p2', region: null as any, position: [7, 20] };
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const part3: Part = { id: 'p3', region: null as any, position: [2, 30] };
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const region = 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);
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expect(region.value.children[0].value.position[0]).toBe(0);
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expect(region.value.children[1].value.position[0]).toBe(1);
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expect(region.value.children[2].value.position[0]).toBe(2);
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expect(region.value.children[0].value.position[1]).toBe(30);
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expect(region.value.children[1].value.position[1]).toBe(10);
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expect(region.value.children[2].value.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', region: null as any, position: [5, 100] };
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const part2: Part = { id: 'p2', region: null as any, position: [7, 200] };
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const region = 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);
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expect(region.value.children[0].value.position[0]).toBe(10);
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expect(region.value.children[1].value.position[0]).toBe(11);
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expect(region.value.children[0].value.position[1]).toBe(100);
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expect(region.value.children[1].value.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', region: null as any, position: [2, 50] };
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const part2: Part = { id: 'p2', region: null as any, position: [4, 60] };
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const part3: Part = { id: 'p3', region: null as any, position: [1, 70] };
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const region = 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);
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expect(region.value.children[0].value.position[0]).toBe(8);
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expect(region.value.children[1].value.position[0]).toBe(9);
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expect(region.value.children[2].value.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', region: null as any, position: [0, 5] };
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const part2: Part = { id: 'p2', region: null as any, position: [1, 6] };
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const part3: Part = { id: 'p3', region: null as any, position: [2, 7] };
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const region = 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);
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expect(region.value.children[0].value.position[0]).toBe(4);
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expect(region.value.children[1].value.position[0]).toBe(5);
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expect(region.value.children[2].value.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', region: null as any, position: [0, 10] };
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const part2: Part = { id: 'p2', region: null as any, position: [1, 20] };
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const region = 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);
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expect(region.value.children[0].value.position[0]).toBe(4.5);
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expect(region.value.children[1].value.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', region: null as any, position: [5, 100] };
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const part2: Part = { id: 'p2', region: null as any, position: [1, 200] };
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const part3: Part = { id: 'p3', region: null as any, position: [3, 300] };
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const region = 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);
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expect(region.value.children[0].value.id).toBe('p2');
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expect(region.value.children[1].value.id).toBe('p3');
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expect(region.value.children[2].value.id).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', region: null as any, position: [5, 10] };
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const part2: Part = { id: 'p2', region: null as any, position: [7, 20] };
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const part3: Part = { id: 'p3', region: null as any, position: [2, 30] };
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const region = 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);
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const positions = region.value.children.map(c => ({
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id: c.value.id,
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position: c.value.position
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}));
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expect(positions[0].id).toBe('p3');
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expect(positions[0].position).toEqual([0, 2]);
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expect(positions[1].id).toBe('p1');
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expect(positions[1].position).toEqual([1, 0]);
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expect(positions[2].id).toBe('p2');
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expect(positions[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', region: null as any, position: [0, 0] };
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const part2: Part = { id: 'p2', region: null as any, position: [10, 0] };
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const part3: Part = { id: 'p3', region: null as any, position: [10, 1] };
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const part4: Part = { id: 'p4', region: null as any, position: [0, 1] };
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const region = 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);
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const positions = region.value.children.map(c => ({
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id: c.value.id,
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position: c.value.position
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}));
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expect(positions[0].id).toBe('p1');
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expect(positions[0].position).toEqual([0, 0]);
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expect(positions[1].id).toBe('p4');
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expect(positions[1].position).toEqual([0, 1]);
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expect(positions[2].id).toBe('p2');
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expect(positions[2].position).toEqual([1, 0]);
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expect(positions[3].id).toBe('p3');
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expect(positions[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 = createTestRegion([], []);
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const rng = createRNG(42);
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shuffle(region, rng);
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expect(region.value.children).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', region: null as any, position: [0, 0, 0] };
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const region = createTestRegion([], [part]);
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const rng = createRNG(42);
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shuffle(region, rng);
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expect(region.value.children[0].value.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', region: null as any, position: [0, 100] };
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const part2: Part = { id: 'p2', region: null as any, position: [1, 200] };
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const part3: Part = { id: 'p3', region: null as any, position: [2, 300] };
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const region = createTestRegion([], [part1, part2, part3]);
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const rng = createRNG(42);
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const originalPositions = region.value.children.map(c => [...c.value.position]);
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shuffle(region, rng);
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const newPositions = region.value.children.map(c => c.value.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 createRegionForTest = () => {
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const part1: Part = { id: 'p1', region: null as any, position: [0, 10] };
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const part2: Part = { id: 'p2', region: null as any, position: [1, 20] };
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const part3: Part = { id: 'p3', region: null as any, position: [2, 30] };
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return createTestRegion([], [part1, part2, part3]);
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};
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const setup1 = createRegionForTest();
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const setup2 = createRegionForTest();
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const rng1 = createRNG(42);
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const rng2 = createRNG(42);
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shuffle(setup1, rng1);
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shuffle(setup2, rng2);
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const positions1 = setup1.value.children.map(c => c.value.position);
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const positions2 = setup2.value.children.map(c => c.value.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 createRegionForTest = () => {
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const part1: Part = { id: 'p1', region: null as any, position: [0, 10] };
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const part2: Part = { id: 'p2', region: null as any, position: [1, 20] };
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const part3: Part = { id: 'p3', region: null as any, position: [2, 30] };
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const part4: Part = { id: 'p4', region: null as any, position: [3, 40] };
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const part5: Part = { id: 'p5', region: null as any, position: [4, 50] };
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return createTestRegion([], [part1, part2, part3, part4, part5]);
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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 = createRegionForTest();
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const rng = createRNG(seed);
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shuffle(setup, rng);
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const positions = JSON.stringify(setup.value.children.map(c => c.value.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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});
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