feuerwerk/tools/e2e/09-containers.mjs

import { instanceChild } from '../lib/builders.mjs';
import { same } from '../lib/harness.mjs';

/**
 * Multi-selection and placed containers: what the scene *holds* (the container object alone) against
 * what the editor *lists* (content resolved from the template), and deviations kept per instance.
 */
export async function containers(t) {
  const {
    saved,
    check,
    sleep,
    evaluate,
    json,
    has,
    shot,
    click,
    clickText,
    drag,
    dragAsset,
    locate,
    press,
    typeText,
    undo,
    mutate,
    select,
    state,
    object,
    objects,
    storedObjects,
    asset,
    world,
    play,
    stop,
    api,
    sceneOf,
    navigate,
    projectId,
    findIcon,
  } = t;
  const center = await json('__gm.viewportCenter()');
  /** Types a value into an inspector field, which runs the real command behind that row. */
  const setField = async (label, value) => {
    const row = await locate(label);
    await click(row.x + 160, row.y);
    await press('a', { ctrl: true });
    await typeText(String(value));
    await press('Enter');
  };
  const notice = async () => {
    await evaluate("__gm.state.notice = ''");
    return async () => (await state()).notice;
  };
  const selectObject = async (id) => {
    await select({ kind: 'object', holderId: 'scene1', objectId: id, objectIds: [id] });
  };

  // 9a. Reset both crates to known spots, then Ctrl-click the second row in the hierarchy:
  //     both are selected, the inspector shows the multi view.
  await mutate(`
    const objs = __gm.state.activeScene.objects;
    const o1 = objs.find(o => o.id === 'o1'); const o2 = objs.find(o => o.id === 'o2');
    o1.position = { x: -150, y: 0, z: 0 }; o1.parentId = '';
    o2.position = { x: 120, y: -80, z: 0 }; o2.parentId = '';
    objs.find(o => o.id === 'oc2').overrides = { width: 140 };
    __gm.state.select(null)`);
  await clickText('Red crate');
  const blueRow = await locate('Blue crate');
  await click(blueRow.x, blueRow.y, 'left', { ctrl: true });
  let s = await state();
  check(
    'Ctrl-click in the hierarchy adds to the selection',
    s.selection?.kind === 'object' &&
      same(s.selection.objectIds, ['o1', 'o2']) &&
      s.selection.objectId === 'o2',
    JSON.stringify(s.selection),
  );
  check('inspector shows the multi-selection', await has('2 OBJECTS SELECTED'));
  await shot('23-multi-selected');
  await click(blueRow.x, blueRow.y, 'left', { ctrl: true });
  s = await state();
  check(
    'Ctrl-click again removes the object from the selection',
    s.selection?.kind === 'object' && same(s.selection.objectIds, ['o1']),
    JSON.stringify(s.selection),
  );

  // 9b. Rubber band on empty space around the red crate (world x −230…−90, y −50…50): picks
  //      the objects whose position lies inside – the crate and its collider, not the Mover
  //      (at y = 110), not the camera (at the origin).
  await drag(center.x - 230, center.y - 50, center.x - 90, center.y + 50);
  s = await state();
  check(
    'rubber-band selection picks the objects inside it',
    s.selection?.kind === 'object' && same([...s.selection.objectIds].sort(), ['o1', 'oc1']),
    JSON.stringify(s.selection),
  );
  await shot('25-marquee');

  // 9c. Dragging one of several selected objects moves all of them as one undo step.
  const redScreen = await json(`__gm.objectScreen('o1')`);
  await select({ kind: 'object', holderId: 'scene1', objectId: 'o2', objectIds: ['o1', 'o2'] });
  await drag(redScreen.x, redScreen.y + 20, redScreen.x + 50, redScreen.y + 20);
  check(
    'dragging a multi-selection moves every selected object',
    (await object('o1')).position.x === -100 && (await object('o2')).position.x === 170,
    JSON.stringify({ o1: (await object('o1')).position, o2: (await object('o2')).position }),
  );
  await undo();
  check(
    'one undo restores both',
    (await object('o1')).position.x === -150 && (await object('o2')).position.x === 120,
  );

  // 9d. Delete with a multi-selection removes all of them (with subtrees) as one step.
  const listedBeforeDelete = (await objects()).length;
  await select({ kind: 'object', holderId: 'scene1', objectId: 'o2', objectIds: ['o1', 'o2'] });
  await press('Delete');
  check(
    'Delete removes the whole multi-selection with its subtrees',
    (await objects()).length === listedBeforeDelete - 5,
  );
  await undo();
  check('undo restores all of them', (await objects()).length === listedBeforeDelete);

  // 9e. Create container: both crates, their colliders and the Mover *leave the scene*; one stored
  //      container object stands in their stead and the five are resolved from its template.
  const assetsBefore = (await json('__gm.state.project.assets')).length;
  const storedBefore = (await storedObjects()).length;
  const listedBefore = (await objects()).length;
  await select({ kind: 'object', holderId: 'scene1', objectId: 'o2', objectIds: ['o1', 'o2'] });
  await clickText('Create container');
  s = await state();
  const instanceA = s.selection?.kind === 'object' ? await object(s.selection.objectId) : null;
  const containerAsset = instanceA ? await asset(instanceA.assetId) : null;
  const storedAfter = (await storedObjects()).length;
  const listedAfter = (await objects()).length;
  check(
    'Create container adds one container asset and one placed container, selected',
    containerAsset?.type === 'container' &&
      s.selection.objectIds.length === 1 &&
      (await json('__gm.state.project.assets')).length === assetsBefore + 1,
    JSON.stringify({ instanceA, type: containerAsset?.type }),
  );
  check(
    'the container sits at the centre of the selection',
    instanceA && instanceA.parentId === '' && same(instanceA.position, { x: -15, y: -40, z: 0 }),
    JSON.stringify(instanceA?.position),
  );
  const swallowed = ['o1', 'o2', 'o4', 'oc1', 'oc2'];
  const storedIds = (await storedObjects()).map((o) => o.id);
  check(
    'the members left the scene: five objects out, one container object in',
    storedAfter === storedBefore - 4 && !swallowed.some((id) => storedIds.includes(id)),
    JSON.stringify({ storedBefore, storedAfter, storedIds }),
  );
  check(
    'the template holds the whole subtree (2 crates, 2 colliders, the Mover)',
    containerAsset?.objects.length === 5 &&
      containerAsset.objects.filter((o) => o.parentId === '').length === 2,
    JSON.stringify(containerAsset?.objects.map((o) => [o.assetId, o.parentId === '' ? 'root' : 'child'])),
  );

  // The two crate templates, told apart by where the centring put them.
  const roots = containerAsset.objects.filter((o) => o.parentId === '');
  const redTemplate = roots.find((o) => o.position.x === -135);
  const contentOf = (instanceId) => containerAsset.objects.map((o) => instanceChild(instanceId, o.id));
  const redA = instanceChild(instanceA.id, redTemplate.id);
  const redAPath = redTemplate.id;
  check(
    'the editor lists the content again, under ids derived from the template',
    listedAfter === listedBefore + 1 &&
      same(
        (await objects()).filter((o) => contentOf(instanceA.id).includes(o.id)).map((o) => o.id),
        contentOf(instanceA.id),
      ),
    JSON.stringify({ listedBefore, listedAfter, derived: contentOf(instanceA.id) }),
  );
  const redResolved = await object(redA);
  check(
    'a resolved object carries the template values and hangs below the container',
    redResolved &&
      redResolved.parentId === instanceA.id &&
      redResolved.name === 'Red crate' &&
      redResolved.position.x === -135 &&
      redResolved.position.y === 40,
    JSON.stringify(redResolved),
  );
  const orderC = await json('(__gm.hierarchyExpandAll(), __gm.hierarchyOrder())');
  const cAt = orderC.indexOf(instanceA.id);
  check(
    'hierarchy lists the container with its resolved content indented below',
    cAt >= 0 && same(orderC.slice(cAt), [instanceA.id, ...contentOf(instanceA.id)]),
    JSON.stringify(orderC),
  );
  check(
    'container symbol is drawn in the overlay layer',
    (await evaluate(`__gm.layerOf('${instanceA.id}')`)) === 'overlay',
  );
  await shot('24-container-created');

  // 9f. Dragging the container symbol in the viewport moves the whole group; undo restores it.
  const cScreen = await json(`__gm.objectScreen('${instanceA.id}')`);
  await drag(cScreen.x, cScreen.y, cScreen.x + 100, cScreen.y);
  check(
    'dragging the container moves the group (its content keeps the template positions)',
    (await object(instanceA.id)).position.x === 85 && (await object(redA)).position.x === -135,
    JSON.stringify({ container: (await object(instanceA.id)).position }),
  );
  await undo();
  check('undo moves the container back', (await object(instanceA.id)).position.x === -15);

  // 9g. Placing the container asset again adds exactly ONE stored object – and five more that
  //      the editor lists. Against the old copying model the stored count would jump by six.
  const spot = await json('__gm.viewportCenter()');
  await dragAsset(containerAsset.id, spot.x + 90, spot.y + 60);
  const instanceB = (await storedObjects()).find(
    (o) => o.assetId === containerAsset.id && o.id !== instanceA.id,
  );
  const redB = instanceB && instanceChild(instanceB.id, redTemplate.id);
  check(
    'placing a container stores one object and lists its whole content',
    Boolean(instanceB) &&
      (await storedObjects()).length === storedAfter + 1 &&
      (await objects()).length === listedAfter + 1 + containerAsset.objects.length,
    JSON.stringify({
      stored: (await storedObjects()).length,
      listed: (await objects()).length,
      expected: listedAfter + 6,
    }),
  );
  check(
    'the second instance shows the same content at the same template positions',
    (await object(redB)).position.x === -135 && (await object(redB)).position.y === 40,
    JSON.stringify((await object(redB))?.position),
  );
  check(
    'a fresh instance carries no deviations at all',
    same(instanceB.instanceEdits, {}),
    JSON.stringify(instanceB.instanceEdits),
  );
  await shot('26-container-placed');

  // 9h. A value edited on one instance is kept on that instance and nowhere else: the scene
  //      grows by no object, the deviation lands in `instanceEdits` under the template path.
  await selectObject(redB);
  check('the inspector names the container the object comes from', await has(containerAsset.name));
  await setField('X', -100);
  const editedB = (await storedObjects()).find((o) => o.id === instanceB.id);
  check(
    'an edit on resolved content is stored as an instance deviation, not as a new object',
    (await storedObjects()).length === storedAfter + 1 &&
      editedB.instanceEdits[redAPath]?.position.x === -100 &&
      (await object(redB)).position.x === -100,
    JSON.stringify(editedB.instanceEdits),
  );
  check(
    'the other instance is untouched by it',
    (await object(redA)).position.x === -135,
    JSON.stringify((await object(redA)).position),
  );

  // 9i. Editing the template reaches every instance that has not been touched there – and only
  //      those. The untouched axis of the edited object follows along with the rest.
  const setTemplate = (body) =>
    mutate(
      `const tpl = __gm.state.project.assets.find(a => a.id === '${containerAsset.id}')
         .objects.find(o => o.id === '${redAPath}');
       ${body}`,
    );
  await setTemplate(`tpl.position.y = 55; tpl.name = 'Template crate'; tpl.overrides.color = 0x00ff00`);
  check(
    'a template edit reaches every instance at once',
    (await object(redA)).position.y === 55 &&
      (await object(redB)).position.y === 55 &&
      (await object(redA)).name === 'Template crate' &&
      (await object(redB)).name === 'Template crate' &&
      (await object(redA)).overrides.color === 0x00ff00,
    JSON.stringify({ a: await object(redA), b: await object(redB) }),
  );
  await setTemplate(`tpl.position.x = -200`);
  check(
    'but it does not overwrite the instance that was moved on its own',
    (await object(redA)).position.x === -200 && (await object(redB)).position.x === -100,
    JSON.stringify({ a: (await object(redA)).position.x, b: (await object(redB)).position.x }),
  );
  await setTemplate(
    `tpl.position.x = -135; tpl.position.y = 40; tpl.name = 'Red crate'; delete tpl.overrides.color`,
  );
  check(
    'putting the template back takes the untouched instance back with it',
    (await object(redA)).position.x === -135 && (await object(redA)).name === 'Red crate',
  );

  // 9j. Structure is the template's business: resolved content cannot be removed, re-parented,
  //      given a collider or turned into a container of its own.
  //      The hierarchy menu is the only way to a collider, and a disabled entry must not even reach
  //      the command: the command refuses too, but with a notice.
  const colliderFromMenu = async (id) => {
    await selectObject(id);
    const row = await json(`__gm.hierarchyRow(${JSON.stringify(id)})`);
    const before = (await objects()).length;
    const noticeNow = await notice();
    await click(row.x, row.y, 'right');
    await clickText('Add collider…');
    // An enabled entry opens the second menu (#222); a disabled one leaves the first standing.
    if (await has('Create new collider')) await clickText('Create new collider');
    await press('Escape');
    return { added: (await objects()).length - before, notice: await noticeNow() };
  };
  const refused = JSON.stringify({ added: 0, notice: '' });
  const fromContent = await colliderFromMenu(redA);
  check(
    'the menu offers no collider for resolved content',
    JSON.stringify(fromContent) === refused,
    JSON.stringify(fromContent),
  );
  const fromInstance = await colliderFromMenu(instanceA.id);
  check(
    'nor for the placed container itself',
    JSON.stringify(fromInstance) === refused,
    JSON.stringify(fromInstance),
  );
  const plainId = await json(`(() => {
    const p = __gm.state.project;
    const sprite = __gm.state.activeScene.objects.find(
      (o) => p.assets.find((a) => a.id === o.assetId)?.type === 'sprite',
    );
    return sprite ? sprite.id : null;
  })()`);
  await selectObject(plainId);
  check('the inspector has no collider button of its own', !(await has('+ Add collider')));
  const fromPlain = await colliderFromMenu(plainId);
  check(
    'while a plain sprite still gets one from the menu',
    fromPlain.added === 1,
    JSON.stringify(fromPlain),
  );
  await undo();
  await selectObject(redA);
  let noticeAfter = await notice();
  await press('Delete');
  check(
    'removing resolved content is refused with a notice',
    (await noticeAfter()).includes('container template') && Boolean(await object(redA)),
    await noticeAfter(),
  );
  noticeAfter = await notice();
  await press('g', { ctrl: true });
  check(
    'making a container out of resolved content is refused too',
    (await noticeAfter()).includes('container template'),
    await noticeAfter(),
  );
  const parentRow = await json("__gm.inspectorField('Parent')");
  await click(parentRow.x, parentRow.y);
  check(
    'the Parent picker does not even open for resolved content',
    same(await json('__gm.overlayTexts()'), []),
    JSON.stringify(await json('__gm.overlayTexts()')),
  );
  await press('Escape');
  noticeAfter = await notice();
  // Rows are addressed by id, not by their text: both instances read "Red crate" by now.
  const rowAt = async (id) => {
    const p = await json(`__gm.hierarchyChevron(${JSON.stringify(id)})`);
    if (!p) throw new Error(`no hierarchy row for ${id}`);
    return { x: p.x + 60, y: p.y };
  };
  const redARow = await rowAt(redA);
  const otherRow = await rowAt(instanceB.id);
  await drag(redARow.x, redARow.y, otherRow.x, otherRow.y);
  check(
    're-parenting resolved content by dragging its row is refused',
    (await noticeAfter()).includes('container template') && (await object(redA)).parentId === instanceA.id,
    `${await noticeAfter()} / parent ${(await object(redA)).parentId}`,
  );
  await shot('26b-structure-refused');

  // 9k. Unpack: the content is written into the scene as ordinary objects under the very same
  //      ids, the instance stops following the template – and now its structure *can* be changed.
  await dragAsset(containerAsset.id, spot.x - 90, spot.y + 60);
  const instanceC = (await storedObjects()).find(
    (o) => o.assetId === containerAsset.id && o.id !== instanceA.id && o.id !== instanceB.id,
  );
  const redC = instanceChild(instanceC.id, redTemplate.id);
  const listedBeforeUnpack = (await objects()).length;
  const storedBeforeUnpack = (await storedObjects()).length;
  await selectObject(instanceC.id);
  check(
    'the inspector shows what the placed container follows, without a button to unpack it (#295)',
    (await has('Follows a template of 5 object(s).')) && !(await has('Unpack')),
  );
  const instanceCRow = await json(`__gm.hierarchyRow(${JSON.stringify(instanceC.id)})`);
  await click(instanceCRow.x, instanceCRow.y, 'right');
  await clickText('Unpack container');
  check(
    'Unpack writes the content into the scene, keeping the ids and the listing',
    (await storedObjects()).length === storedBeforeUnpack + 5 &&
      (await objects()).length === listedBeforeUnpack &&
      (await storedObjects()).some((o) => o.id === redC),
    JSON.stringify({
      stored: (await storedObjects()).length,
      listed: (await objects()).length,
      before: { stored: storedBeforeUnpack, listed: listedBeforeUnpack },
    }),
  );
  await selectObject(instanceC.id);
  check(
    'and the inspector says so, there is nothing left to follow',
    (await has('Unpacked: its content is stored in the scene.')) &&
      !(await has('Follows a template of 5 object(s).')),
  );
  await setTemplate(`tpl.position.x = -300`);
  check(
    'an unpacked instance no longer follows the template',
    (await object(redC)).position.x === -135 && (await object(redA)).position.x === -300,
    JSON.stringify({ c: (await object(redC)).position.x, a: (await object(redA)).position.x }),
  );
  await setTemplate(`tpl.position.x = -135`);
  await selectObject(redC);
  // Unpacking keeps the derived ids, so an id that merely *looks* like content of a template must
  // not freeze the picker any more – the inspector has to read the holder, not the id.
  const unpackedParentRow = await json("__gm.inspectorField('Parent')");
  await click(unpackedParentRow.x, unpackedParentRow.y);
  check(
    'unpacked content offers the Parent picker like any ordinary object',
    (await json('__gm.overlayTexts()')).includes('None'),
    JSON.stringify(await json('__gm.overlayTexts()')),
  );
  await press('Escape');
  noticeAfter = await notice();
  const redCRow = await rowAt(redC);
  await click(redCRow.x, redCRow.y, 'right');
  await clickText('Unparent (move to top level)');
  check(
    'unpacked content can be re-parented, which was refused while it followed the template',
    (await object(redC)).parentId === '' && (await noticeAfter()) === '',
    `${await noticeAfter()} / parent "${(await object(redC)).parentId}"`,
  );
  noticeAfter = await notice();
  await selectObject(redC);
  await press('Delete');
  check(
    'and it can be removed – the refusal was about following a template, not about the id',
    !(await object(redC)) && (await noticeAfter()) === '',
    `${await noticeAfter()}`,
  );
  await selectObject(instanceC.id);
  await press('Delete');
  check(
    'removing the unpacked container takes the rest of its content with it',
    (await storedObjects()).length === storedBeforeUnpack - 1,
    JSON.stringify({ now: (await storedObjects()).length, was: storedBeforeUnpack }),
  );

  // 9l. Spawning a container at runtime spells it out the same way Unpack does, under the same
  //      derived ids – and Stop throws the whole run away with it.
  const spawnParam = (assetId) =>
    mutate(
      `__gm.state.project.assets.find(a => a.id === 'spawner').graph.nodes.find(n => n.id === 's-spawn').params.asset = ${JSON.stringify(assetId)}`,
    );
  await spawnParam(containerAsset.id);
  const beforeSpawn = await objects();
  await play();
  await press('Space');
  const fresh = (await objects()).filter((o) => !beforeSpawn.some((b) => b.id === o.id));
  const spawnedRoot = fresh.find((o) => o.parentId === '');
  check(
    'Spawn of a container asset creates the container object plus its content',
    fresh.length === 6 &&
      spawnedRoot?.assetId === containerAsset.id &&
      fresh.filter((o) => o.id.startsWith(`${spawnedRoot.id}~`)).length === 5,
    JSON.stringify(fresh.map((o) => ({ id: o.id, assetId: o.assetId }))),
  );
  const spawnWorld = await world();
  check(
    'the spawned instance lives in the world and its name reached the Log node',
    spawnWorld.entities.length === beforeSpawn.length + 6 && spawnWorld.log.includes(containerAsset.name),
    JSON.stringify({ n: spawnWorld.entities.length, log: spawnWorld.log.slice(-1) }),
  );
  await stop();
  check('stop discards the spawned instance', (await objects()).length === beforeSpawn.length);
  await spawnParam('crate');

  // 9m. Apply / revert on resolved content. The red crate of instance B was moved on x, the one
  //      of instance A still matches the template; apply writes the value into the template and A
  //      follows, reset drops the deviation so B follows again.
  const templateRed = async () => (await asset(containerAsset.id)).objects.find((o) => o.id === redAPath);
  await selectObject(redA);
  check(
    'no apply/revert while the instance matches its template',
    !(await findIcon('apply', false)) && !(await findIcon('reset', false)),
  );
  await selectObject(redB);
  const applyButton = await findIcon('apply', false);
  check(
    'a moved instance shows apply and revert on its X row',
    Boolean(applyButton) && (await findIcon('reset', false)),
  );
  await shot('27-apply-buttons');
  await click(applyButton.x, applyButton.y);
  check(
    'apply writes x into the template and the untouched instance follows',
    (await templateRed()).position.x === -100 && (await object(redA)).position.x === -100,
    JSON.stringify({ template: (await templateRed()).position, a: (await object(redA)).position }),
  );
  check('apply hides the buttons again', !(await findIcon('apply', false)));
  await undo();
  check(
    'undo restores template and instances',
    (await templateRed()).position.x === -135 && (await object(redA)).position.x === -135,
  );
  const revertButton = await findIcon('reset', false);
  await click(revertButton.x, revertButton.y);
  const revertedB = (await storedObjects()).find((o) => o.id === instanceB.id);
  check(
    'revert drops the deviation, so the instance follows the template again',
    (await object(redB)).position.x === -135 && revertedB.instanceEdits[redAPath] === undefined,
    JSON.stringify(revertedB.instanceEdits),
  );

  // 9n. An override on resolved content deviates from two bases at once – the template it
  //      follows and, one step further up, the asset – so apply offers a menu. Reset never goes
  //      past the nearest base, so it stays a single button.
  await selectObject(redB);
  await setField('Width', 77);
  const editedWidth = (await storedObjects()).find((o) => o.id === instanceB.id);
  check(
    'an override on resolved content is kept as an instance deviation',
    editedWidth.instanceEdits[redAPath]?.overrides.width === 77 &&
      (await object(redB)).overrides.width === 77 &&
      (await object(redA)).overrides.width === undefined,
    JSON.stringify(editedWidth.instanceEdits),
  );
  const applyMenu = await findIcon('apply', true);
  check('an overridden property on an instance shows the apply menu button', Boolean(applyMenu));
  check(
    'reset stays a single button – inside a container it only ever goes to the template',
    !(await findIcon('reset', true)),
  );
  await click(applyMenu.x, applyMenu.y);
  check(
    'the menu offers container and asset',
    (await has('Apply to container')) && (await has('Apply to asset')),
  );
  await shot('28-apply-menu');
  await clickText('Apply to asset');
  check(
    'Apply to asset writes the value into the asset and drops the deviation',
    (await asset('crate')).props.width === 77 && (await object(redB)).overrides.width === undefined,
    JSON.stringify((await asset('crate')).props),
  );
  await undo();
  check(
    'undo restores asset and deviation',
    (await asset('crate')).props.width === 100 && (await object(redB)).overrides.width === 77,
  );
  await click(applyMenu.x, applyMenu.y);
  await clickText('Apply to container');
  check(
    'Apply to container writes the override into the template, so every instance shows it',
    (await templateRed()).overrides.width === 77 && (await object(redA)).overrides.width === 77,
    JSON.stringify({ template: (await templateRed()).overrides, a: (await object(redA)).overrides }),
  );

  // 9o. redB matches its template again (both 77) and has nothing of its own left to reset –
  //      but the value still differs from the asset (100), which apply can still reach past it.
  await sleep(200);
  check(
    'with the template carrying the value there is nothing left to reset, only an apply upwards',
    (await findIcon('apply', false)) && !(await findIcon('apply', true)) && !(await findIcon('reset', false)),
  );
  await shot('28b-single-apply');
  const revertedEdits = (await storedObjects()).find((o) => o.id === instanceB.id);
  check(
    'and the instance stores no deviation for it any more',
    revertedEdits.instanceEdits[redAPath] === undefined,
    JSON.stringify(revertedEdits.instanceEdits),
  );
  await mutate(
    `delete __gm.state.project.assets.find(a => a.id === '${containerAsset.id}')
       .objects.find(o => o.id === '${redAPath}').overrides.width`,
  );

  // 9p. Save and load: an instance is a container object plus its deviations, nothing else.
  //      The content must be nowhere in the saved scene, and reloading must resolve it back.
  await selectObject(redB);
  await setField('Y', 12);
  await saved();
  const savedScene = sceneOf(await api(`projects/${projectId}`));
  const savedInstance = savedScene.objects.find((o) => o.id === instanceB.id);
  check(
    'the saved scene holds the container object and its deviations, not its content',
    Boolean(savedInstance) &&
      savedInstance.instanceEdits[redAPath]?.position.y === 12 &&
      !savedScene.objects.some((o) => o.id === redB),
    JSON.stringify({ edits: savedInstance?.instanceEdits, stored: savedScene.objects.length }),
  );
  const listedBeforeReload = (await objects()).length;
  await navigate();
  await sleep(500);
  // The reloaded scene stands framed already (#295): a click on Fit moves nothing.
  const afterReload = await json(`__gm.objectRect(${JSON.stringify(instanceB.id)})`);
  const fitButton = await json(`__gm.sceneHeaderAt('fit')`);
  await click(fitButton.x, fitButton.y);
  const afterFit = await json(`__gm.objectRect(${JSON.stringify(instanceB.id)})`);
  check(
    'after a reload the scene is framed as Fit frames it',
    Boolean(afterReload && afterFit) &&
      ['x', 'y', 'w', 'h'].every((k) => Math.abs(afterReload[k] - afterFit[k]) < 0.01),
    JSON.stringify({ afterReload, afterFit }),
  );
  check(
    'a reloaded project resolves the same content again, deviations included',
    (await objects()).length === listedBeforeReload &&
      (await object(redB)).position.y === 12 &&
      (await object(redA)).position.y === 40,
    JSON.stringify({
      listed: (await objects()).length,
      expected: listedBeforeReload,
      b: (await object(redB))?.position,
    }),
  );
}