feuerwerk/tests/core/texture-commands.test.ts

import { describe, expect, it } from 'vitest';
import { CreateAssetCommand, CreateTextureCommand } from '../../src/core/commands/assetCommands';
import { CommandError } from '../../src/core/commands/Command';
import { findAsset } from '../../src/core/model/Project';
import { spriteFromTexture } from '../../src/core/properties/aspect';
import { makeProject } from '../helpers';

const FILE = `${'b'.repeat(64)}.webp`;

describe('CreateTextureCommand', () => {
  it('adds a texture asset carrying the uploaded image, and removes it again', () => {
    const { project, stack } = makeProject();
    const command = new CreateTextureCommand('Hero', { file: FILE, width: 64, height: 32 });
    stack.execute(command);

    const asset = findAsset(project, command.asset.id);
    expect(asset).toMatchObject({ type: 'texture', name: 'Hero', file: FILE, width: 64, height: 32 });
    // The schema default comes along, so the new texture is a complete asset – nothing to fill in later.
    expect(asset?.props).toEqual({ filter: 'linear' });

    stack.undo();
    expect(project.assets).toHaveLength(0);
    stack.redo();
    expect(findAsset(project, command.asset.id)?.name).toBe('Hero');
  });

  it('keeps the caller’s name even though the upload result carries one of its own', () => {
    const { project, stack } = makeProject();
    // What `TextureStore.upload` actually answers: the file's original name and its byte count
    // ride along. Copied wholesale they would land in the asset and rename it behind the caller.
    const upload = { file: FILE, name: 'hero-idle.png', width: 64, height: 32, bytes: 900 };
    const command = new CreateTextureCommand('Hero', upload);
    stack.execute(command);

    const asset = findAsset(project, command.asset.id);
    expect(asset?.name).toBe('Hero');
    expect(asset).not.toHaveProperty('bytes');
  });

  it('rejects a file name the server cannot have produced – in execute, not in the constructor', () => {
    const { project, stack } = makeProject();
    const command = new CreateTextureCommand('Hero', { file: '../secrets.png', width: 1, height: 1 });
    expect(() => stack.execute(command)).toThrow(CommandError);
    expect(project.assets).toHaveLength(0);
  });

  it('keeps two assets for the same file apart', () => {
    const { project, stack } = makeProject();
    stack.execute(new CreateTextureCommand('Hero', { file: FILE, width: 8, height: 8 }));
    stack.execute(new CreateTextureCommand('Hero copy', { file: FILE, width: 8, height: 8 }));
    expect(project.assets.map((a) => a.id)).toHaveLength(2);
    expect(new Set(project.assets.map((a) => a.id)).size).toBe(2);
  });
});

describe('CreateAssetCommand with starting props', () => {
  it('creates a sprite wearing the texture at its pixel size, and removes it again', () => {
    const { project, stack } = makeProject();
    const texture = new CreateTextureCommand('Hero', { file: FILE, width: 64, height: 32 });
    stack.execute(texture);
    const sprite = new CreateAssetCommand('sprite', 'Hero 2', spriteFromTexture(project, texture.asset.id));
    stack.execute(sprite);

    expect(findAsset(project, sprite.asset.id)?.props).toEqual({
      enabled: true,
      scale: 1,
      rotation: 0,
      mirrorX: false,
      mirrorY: false,
      width: 64,
      height: 32,
      color: 0xffffff,
      texture: texture.asset.id,
      shader: '',
    });
    stack.undo();
    expect(findAsset(project, sprite.asset.id)).toBeUndefined();
    stack.redo();
    expect(findAsset(project, sprite.asset.id)?.props.texture).toBe(texture.asset.id);
  });

  it('passes each value through the schema', () => {
    const { project, stack } = makeProject();
    const sprite = new CreateAssetCommand('sprite', 'Tiny', { width: -5 });
    stack.execute(sprite);
    expect(findAsset(project, sprite.asset.id)?.props.width).toBe(1);
  });

  it('rejects a property the type does not have, leaving the project untouched', () => {
    const { project, stack } = makeProject();
    expect(() => stack.execute(new CreateAssetCommand('sprite', 'Odd', { zoom: 2 }))).toThrow(CommandError);
    expect(project.assets).toHaveLength(0);
  });
});