test: add smoke coverage for every effect component

src/tests/effects.smoke.test.tsx

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+// Generic smoke coverage for every effect component: mounts inside a real
+// EffectComposer with the minimum props each one actually requires, confirms
+// mounting/unmounting doesn't throw, and that dispose() gets called exactly
+// once per instance on unmount (for both <primitive>-based effects, via our
+// useDispose hook, and wrapEffect-based ones, via r3f's own auto-dispose).
+//
+// This catches constructor/prop-application/dispose-time crashes — it does
+// NOT verify visual/shader correctness. The test environment's WebGL context
+// is a Proxy of no-ops (see test-utils.tsx), so nothing actually renders;
+// effects still need manual/visual verification before release.
+//
+// Coverage is enforced by the last test in this file: every *.tsx file in
+// src/effects must appear either in SMOKE_CASES or EXCLUDED below. Adding a
+// new effect file without touching either list fails CI.
+//
+// This file is excluded from `tsc -p tsconfig.json` (it matches
+// src/**/*.test.*), so editors fall back to a detached/inferred compilation
+// context for it that doesn't automatically pick up @types/node — hence the
+// explicit reference below for the node: imports used by the coverage check.
+
+/// <reference types="node" />
+
+import fs from 'node:fs'
+import path from 'node:path'
+import { fileURLToPath } from 'node:url'
+import { CopyPass, DepthPickingPass, EffectComposer as EffectComposerImpl } from 'postprocessing'
+import * as React from 'react'
+import * as THREE from 'three'
+import { describe, expect, it, vi } from 'vitest'
+import { EffectComposer } from '../EffectComposer'
+import { Autofocus } from '../effects/Autofocus'
+import { Bloom } from '../effects/Bloom'
+import { BrightnessContrast } from '../effects/BrightnessContrast'
+import { ChromaticAberration } from '../effects/ChromaticAberration'
+import { ColorAverage } from '../effects/ColorAverage'
+import { ColorDepth } from '../effects/ColorDepth'
+import { Depth } from '../effects/Depth'
+import { DepthOfField } from '../effects/DepthOfField'
+import { DotScreen } from '../effects/DotScreen'
+import { FXAA } from '../effects/FXAA'
+import { Glitch } from '../effects/Glitch'
+import { GodRays } from '../effects/GodRays'
+import { Grid } from '../effects/Grid'
+import { HueSaturation } from '../effects/HueSaturation'
+import { LensFlare } from '../effects/LensFlare'
+import { LUT } from '../effects/LUT'
+import { N8AO } from '../effects/N8AO'
+import { Noise } from '../effects/Noise'
+import { Outline } from '../effects/Outline'
+import { Pixelation } from '../effects/Pixelation'
+import { Ramp } from '../effects/Ramp'
+import { Scanline } from '../effects/ScanlineEffect'
+import { SelectiveBloom } from '../effects/SelectiveBloom'
+import { Sepia } from '../effects/Sepia'
+import { ShockWave } from '../effects/ShockWave'
+import { SMAA } from '../effects/SMAA'
+import { SSAO } from '../effects/SSAO'
+import { TiltShift } from '../effects/TiltShift'
+import { TiltShift2 } from '../effects/TiltShift2'
+import { ToneMapping } from '../effects/ToneMapping'
+import { Vignette } from '../effects/Vignette'
+import { WaterEffect } from '../effects/Water'
+import { flush, root } from './test-utils'
+
+type SmokeCase = {
+  /** Filename under src/effects this case covers — drives the coverage check below. */
+  file: string
+  label: string
+  composerProps?: Record<string, unknown>
+  /** Extra scene content the effect needs (e.g. a sun mesh for GodRays). */
+  extras?: React.ReactNode
+  /** Renders the effect element. `ref` may be ignored by effects that don't forward one (e.g. LensFlare). */
+  effect: (ref: React.Ref<any>) => React.ReactElement
+}
+
+const sunMesh = new THREE.Mesh(new THREE.SphereGeometry(1, 8, 8))
+const lutTexture = new THREE.DataTexture(new Uint8Array(4 * 4 * 4 * 4), 4, 4)
+
+const SMOKE_CASES: SmokeCase[] = [
+  { file: 'Autofocus.tsx', label: 'Autofocus', effect: (ref) => <Autofocus ref={ref} /> },
+  { file: 'Bloom.tsx', label: 'Bloom', effect: (ref) => <Bloom ref={ref} /> },
+  { file: 'BrightnessContrast.tsx', label: 'BrightnessContrast', effect: (ref) => <BrightnessContrast ref={ref} /> },
+  { file: 'ChromaticAberration.tsx', label: 'ChromaticAberration', effect: (ref) => <ChromaticAberration ref={ref} /> },
+  { file: 'ColorAverage.tsx', label: 'ColorAverage', effect: (ref) => <ColorAverage ref={ref} /> },
+  { file: 'ColorDepth.tsx', label: 'ColorDepth', effect: (ref) => <ColorDepth ref={ref} /> },
+  { file: 'Depth.tsx', label: 'Depth', effect: (ref) => <Depth ref={ref} /> },
+  { file: 'DepthOfField.tsx', label: 'DepthOfField', effect: (ref) => <DepthOfField ref={ref} /> },
+  { file: 'DotScreen.tsx', label: 'DotScreen', effect: (ref) => <DotScreen ref={ref} /> },
+  { file: 'FXAA.tsx', label: 'FXAA', effect: (ref) => <FXAA ref={ref} /> },
+  { file: 'Glitch.tsx', label: 'Glitch', effect: (ref) => <Glitch ref={ref} /> },
+  {
+    file: 'GodRays.tsx',
+    label: 'GodRays',
+    extras: <primitive object={sunMesh} />,
+    effect: (ref) => <GodRays ref={ref} sun={sunMesh} />,
+  },
+  { file: 'Grid.tsx', label: 'Grid', effect: (ref) => <Grid ref={ref} /> },
+  { file: 'HueSaturation.tsx', label: 'HueSaturation', effect: (ref) => <HueSaturation ref={ref} /> },
+  // LensFlare manages its own internal ref and doesn't accept one as a prop.
+  { file: 'LensFlare.tsx', label: 'LensFlare', effect: () => <LensFlare /> },
+  { file: 'LUT.tsx', label: 'LUT', effect: (ref) => <LUT ref={ref} lut={lutTexture} /> },
+  { file: 'N8AO.tsx', label: 'N8AO', effect: (ref) => <N8AO ref={ref} /> },
+  { file: 'Noise.tsx', label: 'Noise', effect: (ref) => <Noise ref={ref} /> },
+  { file: 'Outline.tsx', label: 'Outline', effect: (ref) => <Outline ref={ref} /> },
+  { file: 'Pixelation.tsx', label: 'Pixelation', effect: (ref) => <Pixelation ref={ref} /> },
+  { file: 'Ramp.tsx', label: 'Ramp', effect: (ref) => <Ramp ref={ref} /> },
+  { file: 'ScanlineEffect.tsx', label: 'Scanline', effect: (ref) => <Scanline ref={ref} /> },
+  {
+    file: 'SelectiveBloom.tsx',
+    label: 'SelectiveBloom',
+    effect: (ref) => <SelectiveBloom ref={ref} lights={[]} />,
+  },
+  { file: 'Sepia.tsx', label: 'Sepia', effect: (ref) => <Sepia ref={ref} /> },
+  { file: 'ShockWave.tsx', label: 'ShockWave', effect: (ref) => <ShockWave ref={ref} /> },
+  { file: 'SMAA.tsx', label: 'SMAA', effect: (ref) => <SMAA ref={ref} /> },
+  {
+    file: 'SSAO.tsx',
+    label: 'SSAO (without normal pass — sentinel path)',
+    effect: (ref) => <SSAO ref={ref} />,
+  },
+  {
+    file: 'SSAO.tsx',
+    label: 'SSAO (with normal pass — real construction path)',
+    composerProps: { enableNormalPass: true },
+    effect: (ref) => <SSAO ref={ref} />,
+  },
+  { file: 'TiltShift.tsx', label: 'TiltShift', effect: (ref) => <TiltShift ref={ref} /> },
+  { file: 'TiltShift2.tsx', label: 'TiltShift2', effect: (ref) => <TiltShift2 ref={ref} /> },
+  { file: 'ToneMapping.tsx', label: 'ToneMapping', effect: (ref) => <ToneMapping ref={ref} /> },
+  { file: 'Vignette.tsx', label: 'Vignette', effect: (ref) => <Vignette ref={ref} /> },
+  { file: 'Water.tsx', label: 'WaterEffect', effect: (ref) => <WaterEffect ref={ref} /> },
+]
+
+const EXCLUDED: Record<string, string> = {
+  'Texture.tsx':
+    'loads via useLoader(TextureLoader, textureSrc) — needs a real image decode pipeline this test environment cannot provide. Verify manually.',
+  'ASCII.tsx':
+    "constructs its character atlas via document.createElement('canvas') — this project's vitest config runs the node test environment (no jsdom/document). Verify manually.",
+}
+
+describe('effect smoke tests', () => {
+  it.each(SMOKE_CASES)('$label mounts and unmounts without throwing', async ({ composerProps, extras, effect }) => {
+    const ref = React.createRef<any>()
+    const composerRef = React.createRef<EffectComposerImpl>()
+
+    await React.act(async () =>
+      root.render(
+        <EffectComposer ref={composerRef} {...composerProps}>
+          {extras}
+          {effect(ref)}
+        </EffectComposer>
+      )
+    )
+
+    await flush()
+
+    const instance = ref.current
+    const disposeSpy = instance && typeof instance.dispose === 'function' ? vi.spyOn(instance, 'dispose') : null
+
+    await React.act(async () => root.render(null))
+    await flush()
+
+    if (disposeSpy) {
+      expect(disposeSpy).toHaveBeenCalledTimes(1)
+    }
+  })
+
+  // Tracks dispose() calls per instance rather than per class — EffectComposerImpl
+  // constructs its own internal CopyPass (this.copyPass, for compositing) and
+  // disposes it as part of its own teardown, unrelated to any CopyPass an effect
+  // constructs. A class-wide spy would conflate the two into a false "double
+  // dispose"; this only flags it if the *same* instance is disposed twice.
+  function trackDisposePerInstance(Ctor: { prototype: { dispose: (...args: unknown[]) => unknown } }) {
+    const counts = new Map<object, number>()
+    const original = Ctor.prototype.dispose
+    const spy = vi.spyOn(Ctor.prototype, 'dispose').mockImplementation(function (this: object, ...args: unknown[]) {
+      counts.set(this, (counts.get(this) ?? 0) + 1)
+      return original.apply(this, args)
+    })
+    return {
+      restore: () => spy.mockRestore(),
+      maxCallsForAnySingleInstance: () => Math.max(0, ...counts.values()),
+    }
+  }
+
+  // Autofocus's ref resolves to { dofRef, hitpoint, update } (its own
+  // imperative API), not an effect instance — the generic dispose check
+  // above silently no-ops for it. It actually owns three disposables
+  // (depthPickingPass, copyPass, and the DepthOfField effect it renders
+  // internally), verified explicitly here instead.
+  it('Autofocus disposes depthPickingPass, copyPass, and the nested DepthOfField effect exactly once each', async () => {
+    const depthPickingTracker = trackDisposePerInstance(DepthPickingPass)
+    const copyPassTracker = trackDisposePerInstance(CopyPass)
+    // AutofocusProps' `ref` type is broken (ComponentProps<typeof DepthOfField>
+    // drags in DepthOfField's own `ref: Ref<DepthOfFieldEffect>`, which then
+    // intersects with `Ref<AutofocusApi>` — separate pre-existing issue,
+    // not fixed here). `any` sidesteps it; the runtime shape is AutofocusApi.
+    const ref = React.createRef<any>()
+
+    await React.act(async () =>
+      root.render(
+        <EffectComposer>
+          <Autofocus ref={ref} />
+        </EffectComposer>
+      )
+    )
+
+    await flush()
+
+    const dofEffect = ref.current!.dofRef.current
+    expect(dofEffect).toBeTruthy()
+    const dofDisposeSpy = vi.spyOn(dofEffect!, 'dispose')
+
+    await React.act(async () => root.render(null))
+    await flush()
+
+    expect(depthPickingTracker.maxCallsForAnySingleInstance()).toBeLessThanOrEqual(1)
+    expect(copyPassTracker.maxCallsForAnySingleInstance()).toBeLessThanOrEqual(1)
+    expect(dofDisposeSpy).toHaveBeenCalledTimes(1)
+
+    depthPickingTracker.restore()
+    copyPassTracker.restore()
+  })
+
+  it('covers every file in src/effects (or documents why it is excluded)', () => {
+    const effectsDir = path.join(path.dirname(fileURLToPath(import.meta.url)), '..', 'effects')
+    const files = fs.readdirSync(effectsDir).filter((f) => f.endsWith('.tsx'))
+
+    const covered = new Set(SMOKE_CASES.map((c) => c.file))
+    const missing = files.filter((f) => !covered.has(f) && !(f in EXCLUDED))
+
+    expect(missing).toEqual([])
+  })
+})