Improved harness - with card selection

card-harness/scripts/surface-defaults.test.mjs

@@ -0,0 +1,45 @@
+import { test } from 'node:test'
+import assert from 'node:assert/strict'
+import { mkdtemp, readFile, rm, writeFile } from 'node:fs/promises'
+import { tmpdir } from 'node:os'
+import { resolve } from 'node:path'
+import { readSurfaceDefaults, updateSurfaceDefaults, validateSurfaceDefaults } from './surface-defaults.mjs'
+
+const initial = {
+  schemaVersion: 1,
+  finishes: {
+    'Printed ink': { finishStrength: 0.6 }, Foil: { finishStrength: 1 },
+    Holographic: { finishStrength: 0.33 }, 'Gold leaf': { finishStrength: 0.6 },
+    'Frosted glass': { finishStrength: 0.6 },
+  },
+  materials: {
+    Paper: { surfaceDetail: 0.14, roughness: 0.23 },
+    Linen: { surfaceDetail: 0.05, roughness: 0.23 },
+    Metal: { surfaceDetail: 1, roughness: 0.23, metalBrushHorizontal: false },
+    Wood: { surfaceDetail: 0.14, roughness: 0.23 },
+    Leather: { surfaceDetail: 0.45, roughness: 0.23 },
+  },
+}
+
+test('surface defaults validate requested finish/material strengths and reject unknown settings', () => {
+  assert.equal(validateSurfaceDefaults(structuredClone(initial)).finishes.Holographic.finishStrength, 0.33)
+  const malformed = structuredClone(initial)
+  malformed.materials.Linen.shaderSecret = 1
+  assert.throws(() => validateSurfaceDefaults(malformed), /Unsupported setting/)
+})
+
+test('surface default saves are atomic, scoped, and revision checked', async (t) => {
+  const directory = await mkdtemp(resolve(tmpdir(), 'surface-defaults-'))
+  t.after(() => rm(directory, { recursive: true }))
+  const path = resolve(directory, 'defaults.json')
+  await writeFile(path, `${JSON.stringify(initial, null, 2)}\n`)
+  const before = await readSurfaceDefaults(true, path)
+  const after = await updateSurfaceDefaults({ revision: before.revision, group: 'finish',
+    name: 'Holographic', values: { finishStrength: 0.41 } }, path)
+  assert.equal(after.defaults.finishes.Holographic.finishStrength, 0.41)
+  assert.deepEqual(after.defaults.materials, initial.materials)
+  assert.notEqual(after.revision, before.revision)
+  await assert.rejects(updateSurfaceDefaults({ revision: before.revision, group: 'material',
+    name: 'Linen', values: { surfaceDetail: 0.08, roughness: 0.23 } }, path), /changed since/)
+  assert.doesNotMatch(await readFile(path, 'utf8'), /\.tmp/)
+})