feuerwerk/tools/e2e/46-topbar.mjs

/**
 * The top bar after its rework (#183): five icon buttons and no captions at all. What it used to
 * spell out moved into the one menu – the project list into "Open project…", the project name and
 * the start-scene switch into "Project settings…" next to the collision layers.
 *
 * Runs last, and on purpose: the project picker is opened here and left again with Cancel. Opening
 * or deleting a project for real would pull the project out from under every step before this one.
 */
export async function topbar(t) {
  const { check, json, has, shot, clickText, clickToolbar, typeText, press, sleep, waitUntil } = t;

  await press('Escape');

  // 46a. Nothing in the bar is written any more. The five words it used to carry are asked for as
  //      drawn text: the buttons are still there, only their captions are gone.
  const captions = {
    project: await has('Project'),
    undo: await has('Undo'),
    redo: await has('Redo'),
    play: await has('Play'),
    pause: await has('Pause'),
  };
  check(
    'the top bar carries no captions any more – menu, undo, redo, play and pause are icons',
    Object.values(captions).every((shown) => shown === false),
    JSON.stringify(captions),
  );
  const buttons = await json('__gm.runButtons()');
  check(
    'in edit mode the run buttons offer play and nothing to pause',
    buttons.play === 'play' &&
      buttons.pause === 'pause' &&
      buttons.playEnabled === true &&
      buttons.pauseEnabled === false,
    JSON.stringify(buttons),
  );
  // The pair is centred on the bar itself. The row cannot do that on its own: the spacers around
  // the two buttons share the free space with the flexible notice and so get a third of it each,
  // which used to leave the pair well left of the middle.
  const play = await json('__gm.toolbarAt("play")');
  const pause = await json('__gm.toolbarAt("pause")');
  const barCentre = await json('window.innerWidth / 2');
  check(
    'play and pause sit on the middle of the bar, not on the middle of what is left over',
    Math.abs((play.x + pause.x) / 2 - barCentre) <= 2,
    JSON.stringify({ middle: (play.x + pause.x) / 2, barCentre }),
  );
  await shot('46-topbar');

  // 46b. The one menu, with the separator between what opens a project and what changes the one
  //      that is open. Clearing the saved data is checked in 32.
  await clickToolbar('menu');
  const rows = await json('__gm.menuRows()');
  const expected = [
    'New project',
    'Open project…',
    null,
    'Snapshots…',
    'Release…',
    'Project settings…',
    'Master routing',
    'Clear saved data',
    null,
    'Start recording…',
    null,
    'General settings…',
    'Plugins',
  ];
  check(
    'the menu button opens new project, the project picker, the settings, the master routing, clearing saves, recording the editor, the general settings and the plugins',
    JSON.stringify(rows) === JSON.stringify(expected),
    JSON.stringify(rows),
  );

  // 46c. The picker lists what the account owns, with the open project picked, and Cancel leaves
  //      that project exactly where it was.
  await clickText('Open project…');
  // The picker fetches the list before it can open, so it is waited for rather than read at once.
  await waitUntil('__gm.projectPicker() !== null', { label: 'the project picker opened' });
  const picker = await json('__gm.projectPicker()');
  const projectId = await json('__gm.state.project.id');
  const projectName = await json('__gm.state.project.name');
  check(
    '"Open project…" lists the projects with the open one picked',
    picker !== null && picker.picked === projectId && picker.names.includes(projectName),
    JSON.stringify({ picker, projectId, projectName }),
  );
  await clickText('Cancel');
  check(
    'Cancel closes the picker and leaves the project loaded',
    (await json('__gm.projectPicker()')) === null && (await json('__gm.state.project.id')) === projectId,
    JSON.stringify({ picker: await json('__gm.projectPicker()'), id: await json('__gm.state.project.id') }),
  );

  // 46d. The settings dialog holds the name, the start-scene switch and the collision layers of
  //      #152 – the three things the bar itself used to carry.
  await clickToolbar('menu');
  await clickText('Project settings…');
  const settings = await json('__gm.projectSettings()');
  const layers = await json('__gm.collisionLayers()');
  check(
    '"Project settings…" opens on the project as it stands',
    settings?.name === projectName &&
      (settings.playFrom === 'start' || settings.playFrom === 'active') &&
      JSON.stringify(layers.dialog) === JSON.stringify(layers.project),
    JSON.stringify({ settings, layers }),
  );

  // 46e. Renaming through it, and the icon buttons undoing and redoing it. The name is read off the
  //      project rather than written down here: CI seeds the same project under a different name.
  const nameField = await t.locate(projectName);
  await t.doubleClick(nameField.x, nameField.y);
  await press('a', { ctrl: true });
  await typeText('Renamed by 46');
  await press('Enter');
  await clickText('Apply');
  await sleep(200);
  check(
    'Apply renames the project',
    (await json('__gm.state.project.name')) === 'Renamed by 46',
    await json('__gm.state.project.name'),
  );
  await clickToolbar('undo');
  await sleep(200);
  const undone = await json('__gm.state.project.name');
  await clickToolbar('redo');
  await sleep(200);
  const redone = await json('__gm.state.project.name');
  check(
    'the undo and redo buttons of the bar walk the rename back and forth',
    undone === projectName && redone === 'Renamed by 46',
    JSON.stringify({ undone, redone, was: projectName }),
  );
  // Back to the name the rest of the world knows it by.
  await clickToolbar('undo');
  await sleep(200);
  check(
    'the project is handed back under its own name',
    (await json('__gm.state.project.name')) === projectName,
    await json('__gm.state.project.name'),
  );

  // 46h. The icon buttons say what they do (#209). The pointer has to rest for the sign to show; it
  //      names the step redo would take and the keys, and sits under its button, inside the window.
  const tooltip = () => json('__gm.tooltip()');
  const redoAt = await json('__gm.toolbarAt("redo")');
  const redoLabel = await json('__gm.state.commands.redoLabel');
  await t.mouse('mouseMoved', redoAt.x - 1, redoAt.y);
  await t.mouse('mouseMoved', redoAt.x, redoAt.y);
  const atOnce = await tooltip();
  await waitUntil('__gm.tooltip() !== null', { label: 'the tooltip of the redo button' });
  const redoTip = await tooltip();
  const windowSize = await json('({ w: window.innerWidth, h: window.innerHeight })');
  await shot('46h-tooltip');
  check(
    'resting on the redo button shows "Redo <step> (Ctrl+Y)" under it, after a wait and not at once',
    atOnce === null &&
      typeof redoLabel === 'string' &&
      redoLabel.length > 0 &&
      redoTip.text === `Redo ${redoLabel} (Ctrl+Y)` &&
      redoTip.box.y >= redoTip.anchor.y + redoTip.anchor.h &&
      redoTip.box.x === Math.round(redoTip.anchor.x) &&
      redoTip.box.x + redoTip.box.w <= windowSize.w &&
      (await has(redoTip.text)) === false,
    JSON.stringify({ atOnce, redoLabel, redoTip }),
  );
  // Off the button it goes. The wheel takes it away as well, and the button stays quiet until the
  // pointer has left it; a click does the same, here with the menu opening under it.
  await t.mouse('mouseMoved', redoAt.x + 90, redoAt.y);
  await sleep(100);
  const afterLeaving = await tooltip();
  const menuAt = await json('__gm.toolbarAt("menu")');
  const restOnMenu = async () => {
    await t.mouse('mouseMoved', menuAt.x - 1, menuAt.y);
    await t.mouse('mouseMoved', menuAt.x, menuAt.y);
    await waitUntil('__gm.tooltip() !== null', { label: 'the tooltip of the menu button' });
    return tooltip();
  };
  const menuTip = await restOnMenu();
  await t.wheel(menuAt.x, menuAt.y, 40);
  const afterWheel = await tooltip();
  await t.mouse('mouseMoved', menuAt.x + 1, menuAt.y);
  await sleep(800);
  const afterWaiting = await tooltip();
  await t.mouse('mouseMoved', menuAt.x + 200, menuAt.y);
  const again = await restOnMenu();
  await clickToolbar('menu');
  const afterClick = await tooltip();
  const menuOpen = (await json('__gm.menuRows()')) !== null;
  await press('Escape');
  check(
    'the tooltip goes when the pointer leaves, and the wheel or a click takes it away until the pointer comes back',
    afterLeaving === null &&
      menuTip.text === 'Menu' &&
      afterWheel === null &&
      afterWaiting === null &&
      again.text === 'Menu' &&
      afterClick === null &&
      menuOpen === true,
    JSON.stringify({ afterLeaving, menuTip, afterWheel, afterWaiting, again, afterClick, menuOpen }),
  );
  // At the right border the sign turns left: flush with the right edge of its button. The button
  // nearest that border is the reset of an inspector row, which an override brings up.
  const edgeObject = await json(`(() => {
    const p = __gm.state.project;
    const scene = __gm.state.activeScene;
    const o = scene.objects.find((o) => p.assets.find((a) => a.id === o.assetId)?.type === 'sprite');
    return o ? { scene: scene.id, id: o.id, overrides: o.overrides } : null;
  })()`);
  const setOverrides = (overrides) =>
    t.mutate(
      `__gm.state.activeScene.objects.find((o) => o.id === ${JSON.stringify(edgeObject.id)}).overrides = ${JSON.stringify(overrides)}`,
    );
  await setOverrides({ ...edgeObject.overrides, width: 77 });
  await t.select({ kind: 'object', holderId: edgeObject.scene, objectId: edgeObject.id });
  const resetAt = await t.findIcon('reset', false);
  await t.mouse('mouseMoved', resetAt.x - 1, resetAt.y);
  await t.mouse('mouseMoved', resetAt.x, resetAt.y);
  await waitUntil('__gm.tooltip() !== null', { label: 'the tooltip of the reset button' });
  const edgeTip = await tooltip();
  await shot('46h-tooltip-edge');
  check(
    'a tooltip that would leave the window on the right turns left, and names the one thing its button does',
    edgeTip.text === 'Reset to asset' &&
      edgeTip.anchor.x + edgeTip.box.w > windowSize.w &&
      edgeTip.box.x + edgeTip.box.w === Math.round(edgeTip.anchor.x + edgeTip.anchor.w) &&
      edgeTip.box.x + edgeTip.box.w <= windowSize.w,
    JSON.stringify({ edgeTip, windowSize }),
  );
  await t.mouse('mouseMoved', windowSize.w / 2, windowSize.h / 2);
  await setOverrides(edgeObject.overrides);
  await t.select(null);

  // 46f. The symbol scale in the same dialog: 1 by default, typed down to 0.5, and every icon of the
  //      scene drawn at half its side (18 → 9 world units), undone in one step.
  const iconSize = () =>
    json(`(() => {
      const p = __gm.state.project;
      const scene = p.assets.find((a) => a.id === p.activeSceneId);
      const id = (scene?.objects ?? []).map((o) => o.id).find((id) => __gm.sceneIcon(id)?.visible);
      return id ? __gm.sceneIcon(id).size : null;
    })()`);
  await clickToolbar('menu');
  await clickText('Project settings…');
  const opened = await json('__gm.projectSettings()');
  const field = await json('__gm.projectSettingsSymbolScaleAt()');
  await t.click(field.x, field.y);
  await press('a', { ctrl: true });
  await typeText('0.5');
  await press('Enter');
  await clickText('Apply');
  await sleep(200);
  const scaled = { project: await json('__gm.state.project.symbolScale'), icon: await iconSize() };
  await clickToolbar('undo');
  await sleep(200);
  const restored = { project: await json('__gm.state.project.symbolScale'), icon: await iconSize() };
  check(
    'the symbol scale starts at 1, Apply halves every scene icon, and undo gives the size back',
    opened?.symbolScale === 1 &&
      scaled.project === 0.5 &&
      Math.abs(scaled.icon - 9) < 1e-9 &&
      restored.project === 1 &&
      Math.abs(restored.icon - 18) < 1e-9,
    JSON.stringify({ opened, scaled, restored }),
  );

  // 46g. The eye in the scene tab's header: every placeable type with a switch for its symbol and its name, and a
  //      outline of a collider and of a tilemap's solid cells besides. Sprite, Text and Tilemap have no symbol, so that switch is
  //      greyed out. Real clicks flip the scene view, and the switches are saved but no undo step.
  await json('(__gm.showTab("scene"), true)');
  const firstOf = (type) =>
    json(`(() => {
      const p = __gm.state.project;
      const scene = p.assets.find((a) => a.id === p.activeSceneId);
      const o = (scene?.objects ?? []).find((o) => p.assets.find((a) => a.id === o.assetId)?.type === ${JSON.stringify(type)} && o.enabled !== false);
      return o ? o.id : null;
    })()`);
  const ids = {
    sprite: await firstOf('sprite'),
    collider: 'vis-col-obj',
    behavior: await firstOf('behavior'),
    tilemap: 'vis-map-obj',
  };
  // A map of its own with one solid row, laid over the sprite so it is on screen: the seed has none.
  // A collider of its own there too: in the full run the first one in the scene is a leftover of an
  // earlier module, off screen, and its outline reads as hidden before any switch is touched.
  await t.mutate(`
    const scene = __gm.state.activeScene;
    const assets = __gm.state.project.assets;
    const at = scene.objects.find((o) => o.id === ${JSON.stringify(ids.sprite)}).position;
    assets.push({ id: 'vis-wall', type: 'tile', name: 'Vis wall', props: { kind: 'none', solid: true }, pictures: [] });
    assets.push({ id: 'vis-map', type: 'tilemap', name: 'Vis map', props: { columns: 3, rows: 1, tileSize: 32 },
      layers: [{ id: 'vis-layer', name: 'Layer 1', cells: { '0,0': 'vis-wall', '1,0': 'vis-wall', '2,0': 'vis-wall' } }] });
    const o = structuredClone(scene.objects[0]);
    Object.assign(o, { id: 'vis-map-obj', assetId: 'vis-map', name: 'Vis map', position: { ...at },
      parentId: '', overrides: {}, instanceEdits: {} });
    scene.objects.push(o);
    assets.push({ id: 'vis-col', type: 'collider', name: 'Vis collider',
      props: { shape: 'box', width: 40, height: 40, radius: 20, isTrigger: false } });
    scene.objects.push(Object.assign(structuredClone(o), { id: 'vis-col-obj', assetId: 'vis-col', name: 'Vis collider' }));
    __gm.state.select(null)`);
  const undoBefore = await json('__gm.state.commands.canUndo');
  await t.showTab('scene');
  const eye = await json(`__gm.sceneHeaderAt('visibility')`);
  await t.click(eye.x, eye.y);
  const popup = await json('__gm.visibilityPopup()');
  const entry = (list, type, part) => list?.find((e) => e.type === type && e.part === part);
  const types = [...new Set((popup ?? []).map((e) => e.type))];
  check(
    'the eye lists every placeable type, Symbol greyed out where there is none and Shape on collider, tilemap and clip area',
    JSON.stringify(types) ===
      JSON.stringify([
        'behavior',
        'camera',
        'clip',
        'collider',
        'composition',
        'container',
        'joint',
        'particles',
        'rigidbody',
        'sprite',
        'text',
        'tilemap',
      ]) &&
      entry(popup, 'sprite', 'symbol')?.enabled === false &&
      entry(popup, 'tilemap', 'label')?.enabled === true &&
      entry(popup, 'sprite', 'label')?.on === false &&
      entry(popup, 'collider', 'shape')?.on === true &&
      entry(popup, 'tilemap', 'shape')?.on === true &&
      entry(popup, 'clip', 'shape')?.on === true &&
      popup.filter((e) => e.part === 'shape').length === 3,
    JSON.stringify(popup),
  );
  const flip = async (type, part) => {
    const at = entry(await json('__gm.visibilityPopup()'), type, part);
    await t.click(at.x, at.y);
    await sleep(150);
  };
  const labelIds = async () => (await json('__gm.sceneLabels()')).map((l) => l.id);
  const mapLooks = async () => ({
    solids: (await json(`__gm.tilemap.solids(${JSON.stringify(ids.tilemap)})`))?.visible ?? null,
    drawn: (await json(`__gm.tilemap.info(${JSON.stringify(ids.tilemap)})`)) !== null,
  });
  const before = {
    shape: await json(`__gm.sceneShape(${JSON.stringify(ids.collider)})`),
    labels: await labelIds(),
    icon: (await json(`__gm.sceneIcon(${JSON.stringify(ids.behavior)})`))?.visible,
    map: await mapLooks(),
  };
  await flip('collider', 'shape');
  await flip('tilemap', 'shape');
  await flip('behavior', 'label');
  await flip('behavior', 'symbol');
  await flip('sprite', 'label');
  const after = {
    shape: await json(`__gm.sceneShape(${JSON.stringify(ids.collider)})`),
    labels: await labelIds(),
    icon: (await json(`__gm.sceneIcon(${JSON.stringify(ids.behavior)})`))?.visible,
    popup: await json('__gm.visibilityPopup()'),
    saved: await json('__gm.state.project.sceneVisibility'),
    map: await mapLooks(),
  };
  await shot('46g-visibility');
  check(
    "a tilemap's Shape hides the outline of its solid cells and leaves the map itself drawn",
    before.map.solids === true &&
      before.map.drawn === true &&
      after.map.solids === false &&
      after.map.drawn === true &&
      after.saved.tilemap.shape === false,
    JSON.stringify({ before: before.map, after: after.map }),
  );
  check(
    'switching hides the collider outline and the behavior icon and name, and puts the sprite name on',
    before.shape?.visible === true &&
      after.shape?.visible === false &&
      after.shape?.clickable === false &&
      before.icon === true &&
      after.icon === false &&
      before.labels.includes(ids.behavior) &&
      !after.labels.includes(ids.behavior) &&
      !before.labels.includes(ids.sprite) &&
      after.labels.includes(ids.sprite) &&
      entry(after.popup, 'collider', 'shape')?.on === false,
    JSON.stringify({ ids, before, after: { ...after, popup: undefined } }),
  );
  check(
    'the switches go into the project and not onto the undo stack',
    after.saved.collider.shape === false &&
      after.saved.behavior.label === false &&
      after.saved.sprite.label === true &&
      (await json('__gm.state.commands.canUndo')) === undoBefore,
    JSON.stringify({ saved: after.saved, undoBefore }),
  );
  // Handed back as found, for whatever runs after this.
  await flip('collider', 'shape');
  await flip('tilemap', 'shape');
  await flip('behavior', 'label');
  await flip('behavior', 'symbol');
  await flip('sprite', 'label');
  await press('Escape');
  await t.mutate(`
    const scene = __gm.state.activeScene;
    scene.objects = scene.objects.filter((o) => o.id !== 'vis-map-obj' && o.id !== 'vis-col-obj');
    const assets = __gm.state.project.assets;
    for (const id of ['vis-map', 'vis-wall', 'vis-col']) assets.splice(assets.findIndex((a) => a.id === id), 1)`);
  await t.saved();

  // 46i. "General settings…" (#309): the zoom transition in ms, kept in this browser. The harness
  //      sets 0 on load. At 1000 ms one wheel step in the scene view is sampled on its way – the zoom
  //      between the two steps, the world point under the pointer still under it – and it lands on
  //      the very view a jump of 0 ms reaches.
  await clickToolbar('menu');
  await clickText('General settings…');
  const general = await json('__gm.generalSettingsDialog()');
  const msField = await json('__gm.generalSettingsZoomAt()');
  await t.click(msField.x, msField.y);
  await press('a', { ctrl: true });
  await typeText('1000');
  await press('Enter');
  await clickText('Apply');
  await sleep(100);
  const kept = {
    dialog: await json('__gm.generalSettingsDialog()'),
    ms: await json('__gm.zoomTransition()'),
    stored: await json(`JSON.parse(localStorage.getItem('game-maker.general-settings') ?? 'null')`),
  };
  check(
    '"General settings…" opens on the kept transition, and Apply keeps the one typed in the browser',
    general?.zoomTransitionMs === 0 &&
      kept.dialog === null &&
      kept.ms === 1000 &&
      kept.stored?.zoomTransitionMs === 1000,
    JSON.stringify({ general, kept }),
  );

  // 46i-ii. The custom mouse pointer, on by default: the canvas shows the cursor file an editor
  //         recording draws as its CSS cursor (Chrome took the value, the picture loads, the keyword
  //         stays at the end). Switched off in the dialog the system's keyword is back, on again the file.
  // `json` would stringify the promise itself: this one hands back its JSON once it is settled.
  const pictureLoads = async () =>
    JSON.parse(
      await t.evaluate(`(async () => {
        const url = /^url\\("([^"]*)"\\)/.exec(__gm.canvasCursor())?.[1];
        if (!url) return 'null';
        const image = new Image();
        image.src = url;
        try { await image.decode(); return JSON.stringify([image.naturalWidth, image.naturalHeight]); }
        catch { return '"broken"'; }
      })()`),
    );
  const switchCursor = async () => {
    await clickToolbar('menu');
    await clickText('General settings…');
    const box = await json('__gm.generalSettingsCustomCursorAt()');
    await t.click(box.x, box.y);
    await clickText('Apply');
    await sleep(100);
  };
  const cursorOn = { css: await json('__gm.canvasCursor()'), size: await pictureLoads() };
  await switchCursor();
  const cursorOff = { css: await json('__gm.canvasCursor()') };
  const storedOff = await json(
    `JSON.parse(localStorage.getItem('game-maker.general-settings')).customCursor`,
  );
  await switchCursor();
  const cursorBack = await json('__gm.canvasCursor()');
  check(
    'the custom mouse pointer is on by default as the CSS cursor, General settings switch it off and on',
    general?.customCursor === true &&
      /^url\("data:image\/svg\+xml,.*"\) \d+ \d+, default$/.test(cursorOn.css) &&
      Array.isArray(cursorOn.size) &&
      cursorOn.size[0] > 0 &&
      !cursorOff.css.startsWith('url(') &&
      storedOff === false &&
      cursorBack === cursorOn.css,
    JSON.stringify({ cursorOn: { ...cursorOn, css: cursorOn.css.slice(0, 40) }, cursorOff, storedOff }),
  );

  await t.showTab('scene');
  const rect = await json('__gm.viewportRect()');
  const at = { x: Math.round(rect.x + rect.w * 0.7), y: Math.round(rect.y + rect.h * 0.4) };
  const viewNow = async () => ({
    ...(await json('__gm.sceneView()')),
    world: await json(`__gm.sceneWorldAt(${at.x}, ${at.y})`),
  });
  await t.evaluate('__gm.zoomTransition(0)');
  const start = await viewNow();
  await t.wheel(at.x, at.y, -100);
  const jumped = await viewNow();
  await t.wheel(at.x, at.y, 100);
  const back = await viewNow();
  await t.evaluate('__gm.zoomTransition(1000)');
  await t.mouse('mouseMoved', at.x, at.y);
  await t.mouse('mouseWheel', at.x, at.y, 'none', { deltaX: 0, deltaY: -100 });
  await t.settle(2);
  const midway = await viewNow();
  await waitUntil('!__gm.sceneView().moving', { label: 'the zoom transition ended' });
  const landed = await viewNow();
  const samePoint = (a, b) => Math.abs(a.x - b.x) < 1e-6 && Math.abs(a.y - b.y) < 1e-6;
  check(
    'a frame after the wheel the scene view is on its way: zoom between the steps, the point under the pointer kept',
    back.zoom === start.zoom &&
      jumped.zoom > start.zoom &&
      midway.moving === true &&
      midway.zoom > start.zoom &&
      midway.zoom < jumped.zoom &&
      samePoint(midway.world, start.world),
    JSON.stringify({ start, jumped, back, midway }),
  );
  check(
    'the transition lands on the view a jump reaches: the same step and the same centre',
    landed.moving === false &&
      landed.zoom === jumped.zoom &&
      samePoint(landed, jumped) &&
      samePoint(landed.world, start.world),
    JSON.stringify({ jumped, landed }),
  );
  // A pan during the transition takes it along instead of jumping to its end.
  const by = { x: 40, y: 30 };
  const moved = { x: at.x + by.x, y: at.y + by.y };
  await t.mouse('mouseMoved', at.x, at.y);
  await t.mouse('mouseWheel', at.x, at.y, 'none', { deltaX: 0, deltaY: -100 });
  await t.drag(at.x, at.y, moved.x, moved.y, { steps: 4, button: 'middle' });
  const panned = await json('__gm.sceneView()');
  await waitUntil('!__gm.sceneView().moving', { label: 'the zoom transition ended after the pan' });
  const settled = await json('__gm.sceneView()');
  const heldAfter = await json(`__gm.sceneWorldAt(${moved.x}, ${moved.y})`);
  check(
    'a pan during the transition carries it on: still on its way, then landed one step further, moved by the pan',
    panned.moving === true &&
      panned.zoom > landed.zoom &&
      panned.zoom < settled.zoom &&
      settled.zoom > landed.zoom &&
      samePoint(heldAfter, start.world),
    JSON.stringify({ landed, panned, settled, heldAfter, world: start.world }),
  );
  // Handed back as found: no transition for the steps after this one, and the view it had.
  await t.evaluate('__gm.zoomTransition(0)');
  await t.drag(moved.x, moved.y, at.x, at.y, { steps: 4, button: 'middle' });
  await t.wheel(at.x, at.y, 100);
  await t.wheel(at.x, at.y, 100);
}