feuerwerk/tests/core/commands.test.ts

import { describe, expect, it } from 'vitest';
import {
  CreateAssetCommand,
  DeleteAssetCommand,
  RenameAssetCommand,
  ResetAssetPropertyCommand,
  SetActiveSceneCommand,
  SetAssetPropertyCommand,
} from '../../src/core/commands/assetCommands';
import {
  ClearOverrideCommand,
  MoveSceneObjectCommand,
  PlaceAssetCommand,
  RemoveSceneObjectsCommand,
  SetOverrideCommand,
} from '../../src/core/commands/sceneObjectCommands';
import { findAsset } from '../../src/core/model/Project';
import { makeSpriteScene, place } from '../helpers';

describe('asset commands', () => {
  it('creates assets with defaults and activates the first scene', () => {
    const { project, sceneId, spriteId } = makeSpriteScene();
    expect(project.assets).toHaveLength(2);
    expect(project.activeSceneId).toBe(sceneId);
    expect(findAsset(project, spriteId)?.props).toEqual({
      enabled: true,
      scale: 1,
      rotation: 0,
      mirrorX: false,
      mirrorY: false,
      width: 100,
      height: 100,
      color: 0xffffff,
      texture: '',
      shader: '',
    });
  });

  it('renames and sets properties with undo/redo', () => {
    const { project, stack, spriteId } = makeSpriteScene();
    const sprite = () => findAsset(project, spriteId)!;
    stack.execute(new RenameAssetCommand(spriteId, 'Crate'));
    stack.execute(new SetAssetPropertyCommand(spriteId, 'width', 250));
    expect(sprite().name).toBe('Crate');
    expect(sprite().props.width).toBe(250);
    stack.undo();
    expect(sprite().props.width).toBe(100);
    stack.undo();
    expect(sprite().name).toBe('Box');
    stack.redo();
    stack.redo();
    expect(sprite().name).toBe('Crate');
    expect(sprite().props.width).toBe(250);
  });

  it('rejects unknown properties', () => {
    const { stack, spriteId } = makeSpriteScene();
    expect(() => stack.execute(new SetAssetPropertyCommand(spriteId, 'x', 5))).toThrow(/not defined/);
    expect(() => stack.execute(new ResetAssetPropertyCommand(spriteId, 'x'))).toThrow(/not defined/);
  });

  it('resets a property to its schema default with undo', () => {
    const { project, stack, spriteId } = makeSpriteScene();
    const sprite = () => findAsset(project, spriteId)!;
    stack.execute(new SetAssetPropertyCommand(spriteId, 'height', 60));
    stack.execute(new ResetAssetPropertyCommand(spriteId, 'height'));
    expect(sprite().props.height).toBe(100);
    stack.undo();
    expect(sprite().props.height).toBe(60);
    stack.redo();
    expect(sprite().props.height).toBe(100);
  });

  it('deletes an asset together with its scene objects and restores both on undo', () => {
    const f = makeSpriteScene();
    const { project, stack, spriteId, sceneOf } = f;
    place(f, spriteId, { x: 1, y: 2 });
    place(f, spriteId, { x: 3, y: 4 });
    expect(sceneOf().objects).toHaveLength(2);
    stack.execute(new DeleteAssetCommand(spriteId));
    expect(project.assets).toHaveLength(1);
    expect(sceneOf().objects).toHaveLength(0);
    stack.undo();
    expect(project.assets).toHaveLength(2);
    expect(sceneOf().objects.map((o) => o.position)).toEqual([
      { x: 1, y: 2, z: 0 },
      { x: 3, y: 4, z: 0 },
    ]);
  });

  it('switches the active scene when the active one is deleted', () => {
    const { project, stack, sceneId } = makeSpriteScene();
    const second = new CreateAssetCommand('scene', 'Level 2');
    stack.execute(second);
    stack.execute(new SetActiveSceneCommand(second.asset.id));
    stack.execute(new DeleteAssetCommand(second.asset.id));
    expect(project.activeSceneId).toBe(sceneId);
    stack.undo();
    expect(project.activeSceneId).toBe(second.asset.id);
  });
});

describe('scene object commands', () => {
  it('places assets and refuses scenes', () => {
    const f = makeSpriteScene();
    const { stack, sceneId, spriteId, sceneOf } = f;
    const box = place(f, spriteId, { x: 5, y: 6 });
    const object = sceneOf().objects[0]!;
    expect(object.id).toBe(box);
    expect(object.assetId).toBe(spriteId);
    expect(object.position).toEqual({ x: 5, y: 6, z: 0 });
    expect(object.overrides).toEqual({});

    expect(() => stack.execute(new PlaceAssetCommand(sceneId, sceneId, { x: 0, y: 0 }))).toThrow(
      /cannot be placed/,
    );
    expect(sceneOf().objects).toHaveLength(1);
  });

  it('moves, overrides, clears and removes with undo', () => {
    const f = makeSpriteScene();
    const { stack, sceneId, spriteId, sceneOf, object } = f;
    const box = place(f, spriteId, { x: 0, y: 0 });

    stack.execute(new MoveSceneObjectCommand(sceneId, box, { x: 40, y: 50, z: 3 }));
    expect(object(box).position).toEqual({ x: 40, y: 50, z: 3 });
    stack.undo();
    expect(object(box).position).toEqual({ x: 0, y: 0, z: 0 });
    stack.redo();

    stack.execute(new SetOverrideCommand(sceneId, box, 'color', 0x123456));
    expect(object(box).overrides).toEqual({ color: 0x123456 });
    expect(() => stack.execute(new SetOverrideCommand(sceneId, box, 'nope', 1))).toThrow();

    stack.execute(new ClearOverrideCommand(sceneId, box, 'color'));
    expect(object(box).overrides).toEqual({});
    stack.undo();
    expect(object(box).overrides).toEqual({ color: 0x123456 });

    stack.execute(new RemoveSceneObjectsCommand(sceneId, [box]));
    expect(sceneOf().objects).toHaveLength(0);
    stack.undo();
    expect(object(box).position).toEqual({ x: 40, y: 50, z: 3 });
  });

  it('clears the redo stack on a new command', () => {
    const f = makeSpriteScene();
    place(f, f.spriteId, { x: 0, y: 0 });
    f.stack.undo();
    expect(f.stack.canRedo).toBe(true);
    place(f, f.spriteId, { x: 1, y: 1 });
    expect(f.stack.canRedo).toBe(false);
  });
});