Files
feuerwerk/tests/core/behavior-events.test.ts
T
rootandClaude Opus 5 d54a620ebd Add ESLint and Prettier, and close the node test gaps
Tooling:
- Prettier as the single formatting authority (110 columns, single quotes,
  measured against the existing style); Markdown excluded because table-cell
  padding turns the README glossary into 1000-character lines.
- Type-aware ESLint ending in eslint-config-prettier, so a rule always means
  "this is a bug", never "this looks different".
- .editorconfig and an `npm run check` that runs typecheck, lint, format and
  tests in one go.

Findings fixed on the first run: three more duplicate imports, four
String(unknown) calls (parameter types narrowed instead of casts), two dead
initialisers, two redundant casts, a console.log for a real error. Two
warnings were false here and are disabled with a reason in place.

Tests 132 -> 269:
- node-catalog.test.ts covers every node with a run(), with a guard that fails
  when a new node has no row.
- behavior-events.test.ts covers the ten event nodes through a running World,
  checking timing rather than existence.
- Input's state machine (press/release/releaseAll) is reachable without DOM
  events now; the DOM handlers are thin adapters.

Compare fell back to == without a configured operator although the schema
default is <; aligned.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-08 10:02:22 +02:00

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/**
* The event nodes have no `run` – the BehaviorSystem decides when they fire. These tests drive a
* real world and check that timing: key edges vs. held keys, the timer's own clock, and the
* difference between a collision that starts and one that continues.
*/
import { describe, expect, it } from 'vitest';
import { AddColliderCommand } from '../../src/core/commands/colliderCommands';
import { SetAssetPropertyCommand } from '../../src/core/commands/assetCommands';
import type { BehaviorAsset } from '../../src/core/model/Asset';
import { graphEditor, makeBehavior, makeSpriteScene, place, type SceneFixture, startWorld } from '../helpers';
/** A scene with a 100×60 sprite and a behavior placed below it, ready to have an event wired up. */
function scene(): SceneFixture & { behavior: BehaviorAsset; box: string } {
const f = makeSpriteScene('Box');
f.stack.execute(new SetAssetPropertyCommand(f.spriteId, 'height', 60));
const behavior = makeBehavior(f, 'Logic');
const box = place(f, f.spriteId, { x: 0, y: 0 });
place(f, behavior.id, { x: 0, y: 0 }, box);
return { ...f, behavior, box };
}
/** Wires `<event> → Log(message)` so a fired event shows up as one entry in `world.log`. */
function logOn(
f: SceneFixture & { behavior: BehaviorAsset },
event: string,
params: Record<string, string | number> = {},
message = event,
): void {
const edit = graphEditor(f, f.behavior);
const node = edit.addNode(event, params);
const log = edit.addNode('Log', { message });
edit.connect(node, 'exec', log, 'exec');
}
describe('key events', () => {
it('On key down fires once per press, not while the key stays held', () => {
const f = scene();
logOn(f, 'OnKeyDown', { key: 'a' }, 'down');
const { world, input, frame } = startWorld(f, { behaviors: true });
frame();
expect(world.log).toEqual([]);
input.press('a');
frame();
expect(world.log).toEqual(['down']);
input.press('a'); // auto-repeat while held: no new edge
frame();
frame();
expect(world.log).toEqual(['down']);
input.release('a');
input.press('a');
frame();
expect(world.log).toEqual(['down', 'down']);
});
it('On key up fires once when the key is released', () => {
const f = scene();
logOn(f, 'OnKeyUp', { key: 'a' }, 'up');
const { world, input, frame } = startWorld(f, { behaviors: true });
input.press('a');
frame();
frame();
expect(world.log).toEqual([]);
input.release('a');
frame();
expect(world.log).toEqual(['up']);
frame(); // the edge is consumed, not sticky
expect(world.log).toEqual(['up']);
});
it('On key held fires every frame the key is down', () => {
const f = scene();
logOn(f, 'OnKeyHeld', { key: 'a' }, 'held');
const { world, input, frame } = startWorld(f, { behaviors: true });
input.press('a');
frame();
frame();
frame();
expect(world.log).toEqual(['held', 'held', 'held']);
input.release('a');
frame();
expect(world.log).toHaveLength(3);
});
it('only the node whose key matches fires', () => {
const f = scene();
logOn(f, 'OnKeyDown', { key: 'a' }, 'a');
logOn(f, 'OnKeyDown', { key: 'b' }, 'b');
const { world, input, frame } = startWorld(f, { behaviors: true });
input.press('b');
frame();
expect(world.log).toEqual(['b']);
});
it('losing the window releases every held key, so nothing stays down behind the user’s back', () => {
const f = scene();
logOn(f, 'OnKeyUp', { key: 'a' }, 'up');
logOn(f, 'OnKeyHeld', { key: 'a' }, 'held');
const { world, input, frame } = startWorld(f, { behaviors: true });
input.press('a');
frame();
expect(world.log).toEqual(['held']);
input.releaseAll();
frame();
expect(world.log).toEqual(['held', 'up']);
frame();
expect(world.log).toHaveLength(2);
});
});
describe('On timer', () => {
it('fires on its own clock, independent of the frame rate', () => {
const f = scene();
logOn(f, 'OnTimer', { interval: 1 }, 'tick');
const { world, frame } = startWorld(f, { behaviors: true });
for (let i = 0; i < 4; i++) frame(0.2); // 0.8 s
expect(world.log).toEqual([]);
frame(0.2); // 1.0 s
expect(world.log).toEqual(['tick']);
for (let i = 0; i < 5; i++) frame(0.2); // 2.0 s
expect(world.log).toEqual(['tick', 'tick']);
});
it('catches up when one frame is longer than the interval', () => {
const f = scene();
logOn(f, 'OnTimer', { interval: 0.5 }, 'tick');
const { world, frame } = startWorld(f, { behaviors: true });
frame(2); // a hitch worth four intervals
expect(world.log).toEqual(['tick', 'tick', 'tick', 'tick']);
});
it('two timers keep separate clocks', () => {
const f = scene();
logOn(f, 'OnTimer', { interval: 1 }, 'slow');
logOn(f, 'OnTimer', { interval: 0.5 }, 'fast');
const { world, frame } = startWorld(f, { behaviors: true });
frame(0.5);
expect(world.log).toEqual(['fast']);
frame(0.5);
expect(world.log).toEqual(['fast', 'slow', 'fast']);
});
});
describe('On collision stay', () => {
it('fires every frame the overlap lasts, while enter fires only on the first one', () => {
const f = makeSpriteScene('Crate');
f.stack.execute(new SetAssetPropertyCommand(f.spriteId, 'height', 60));
const behavior = makeBehavior(f, 'Hit');
const a = place(f, f.spriteId, { x: 0, y: 0 });
const b = place(f, f.spriteId, { x: 300, y: 0 });
f.stack.execute(new AddColliderCommand(f.sceneId, a));
f.stack.execute(new AddColliderCommand(f.sceneId, b));
place(f, behavior.id, { x: 0, y: 0 }, a);
const fixture = { ...f, behavior };
logOn(fixture, 'OnCollisionEnter', {}, 'enter');
logOn(fixture, 'OnCollisionStay', {}, 'stay');
logOn(fixture, 'OnCollisionExit', {}, 'exit');
const { world, frame } = startWorld(f, { collisions: true, behaviors: true });
const crateB = world.findByObjectId(b)!;
frame(0.1);
expect(world.log).toEqual([]);
crateB.x = 50; // now overlapping
frame(0.1);
expect(world.log).toEqual(['enter']);
frame(0.1);
frame(0.1);
expect(world.log).toEqual(['enter', 'stay', 'stay']);
crateB.x = 500;
frame(0.1);
expect(world.log).toEqual(['enter', 'stay', 'stay', 'exit']);
frame(0.1);
expect(world.log).toHaveLength(4);
});
});
describe('a switched-off behavior receives no events', () => {
it('ignores keys and timers until it is switched back on', () => {
const f = scene();
logOn(f, 'OnKeyDown', { key: 'a' }, 'down');
logOn(f, 'OnTimer', { interval: 0.5 }, 'tick');
const { world, input, frame } = startWorld(f, { behaviors: true });
const logic = world.entities.find((e) => e.name === 'Logic')!;
logic.props.enabled = false;
input.press('a');
frame(1);
expect(world.log).toEqual([]);
logic.props.enabled = true;
input.release('a');
input.press('a');
frame(1);
// The timer starts counting when the behavior runs again – no backlog from the off period.
expect(world.log).toEqual(['down', 'tick', 'tick']);
});
});