Release God's Eye View as open source

src/data/focusAllocations.test.mjs

@@ -0,0 +1,28 @@
+import { test } from 'node:test';
+import assert from 'node:assert/strict';
+import { spawnSync } from 'node:child_process';
+import { isCalibratedAllocationRuntime } from '../../scripts/run-unit-tests.mjs';
+
+/**
+ * Allocation budgets cover two intentionally different call shapes:
+ * - Prebuilt-option pure paths: <=16 B/call for each treatment helper.
+ * - Production sprite tick: <=212 B/tick when its caller builds both fresh
+ *   options literals. The latter preserves roughly 25% headroom over the
+ *   locally measured steady-state median instead of pretending those caller
+ *   allocations belong to the pure helper bound.
+ */
+test('converged focus treatment stays within the GC-bracketed allocation budget', (t) => {
+  if (!isCalibratedAllocationRuntime()) {
+    return t.skip(`allocation budgets are calibrated for Node 24; running ${process.versions.node}`);
+  }
+  const result = spawnSync(
+    process.execPath,
+    ['--expose-gc', 'scripts/focus-allocation-check.mjs'],
+    { cwd: process.cwd(), encoding: 'utf8' },
+  );
+  assert.equal(result.status, 0, result.stderr || result.stdout);
+  const report = JSON.parse(result.stdout.trim());
+  assert.ok(report.advanceSpriteFocus.roundedMedian <= 16, result.stdout);
+  assert.ok(report.applyAircraftBillboardTreatment.roundedMedian <= 16, result.stdout);
+  assert.ok(report.productionSpriteTick.roundedMedian <= 212, result.stdout);
+});