87 lines
3.4 KiB
JavaScript
87 lines
3.4 KiB
JavaScript
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import { describe, it } from 'node:test';
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import { strict as assert } from 'node:assert';
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import { Primitive } from '../primitive.js';
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import { PitchWalker, EuclideanRhythm, ProbabilityGate } from '../primitives.js';
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import { Chain } from '../chain.js';
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// ---------------------------------------------------------------------------
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// Primitive.reEvalOnLoop default
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// ---------------------------------------------------------------------------
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describe('Primitive.reEvalOnLoop', () => {
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it('defaults to false on the base class', () => {
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// Use a concrete subclass that does not override reEvalOnLoop
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const prim = new EuclideanRhythm();
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assert.strictEqual(prim.reEvalOnLoop, false);
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});
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it('defaults to false for non-stateful primitives', () => {
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const gate = new ProbabilityGate();
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assert.strictEqual(gate.reEvalOnLoop, false);
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});
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});
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// ---------------------------------------------------------------------------
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// PitchWalker.reEvalOnLoop
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// ---------------------------------------------------------------------------
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describe('PitchWalker.reEvalOnLoop', () => {
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it('is true', () => {
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const walker = new PitchWalker();
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assert.strictEqual(walker.reEvalOnLoop, true);
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});
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});
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// ---------------------------------------------------------------------------
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// Chain.hasReEvalPrimitives()
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// ---------------------------------------------------------------------------
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describe('Chain.hasReEvalPrimitives()', () => {
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it('returns false for an empty chain', () => {
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const chain = new Chain();
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assert.strictEqual(chain.hasReEvalPrimitives(), false);
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});
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it('returns false when no primitives have reEvalOnLoop', () => {
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const chain = new Chain();
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chain.addPrimitive(new EuclideanRhythm());
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chain.addPrimitive(new ProbabilityGate());
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assert.strictEqual(chain.hasReEvalPrimitives(), false);
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});
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it('returns true when at least one primitive has reEvalOnLoop', () => {
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const chain = new Chain();
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chain.addPrimitive(new EuclideanRhythm());
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chain.addPrimitive(new PitchWalker());
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assert.strictEqual(chain.hasReEvalPrimitives(), true);
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});
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it('returns false after removing the only reEvalOnLoop primitive', () => {
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const chain = new Chain();
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chain.addPrimitive(new EuclideanRhythm());
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chain.addPrimitive(new PitchWalker());
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assert.strictEqual(chain.hasReEvalPrimitives(), true);
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// PitchWalker is at index 1
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chain.removePrimitive(1);
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assert.strictEqual(chain.hasReEvalPrimitives(), false);
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});
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});
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// ---------------------------------------------------------------------------
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// Sequencer integration (requires browser APIs: AudioContext, WASM, etc.)
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// ---------------------------------------------------------------------------
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// NOTE: ShapeSeqEngine integration tests for loop-start re-evaluation
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// require browser APIs (AudioContext, WASM IML, ClockEngine with
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// requestAnimationFrame). These must be tested in a browser environment
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// or with appropriate mocks (e.g. Playwright e2e tests).
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//
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// Key behaviors to verify in integration tests:
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// 1. seq.loopStart event triggers _handleLoopStart()
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// 2. _handleLoopStart() bumps generation and calls setSequenceInputs()
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// when chain.hasReEvalPrimitives() is true
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// 3. _handleLoopStart() is a no-op when chain has no reEval primitives
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// 4. Unsubscribes from seq.loopStart on destroy()
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// 5. freeze-as-algorithm (meml-9h1) suppresses re-evaluation (future)
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