before functional changes by codex

test/basic/scaling-and-output.basic.test.js

@@ -0,0 +1,25 @@
+const test = require('node:test');
+const assert = require('node:assert/strict');
+
+const { makeMeasurementInstance } = require('../helpers/factories');
+
+test('calculateInput applies scaling and updates bounded output', () => {
+  const m = makeMeasurementInstance();
+
+  m.calculateInput(50);
+  const out = m.getOutput();
+
+  assert.equal(out.mAbs >= 0 && out.mAbs <= 10, true);
+  assert.equal(out.mPercent >= 0 && out.mPercent <= 100, true);
+});
+
+test('out-of-range input is constrained to abs range', () => {
+  const m = makeMeasurementInstance({
+    smoothing: { smoothWindow: 1, smoothMethod: 'none' },
+  });
+
+  m.calculateInput(10000);
+  const out = m.getOutput();
+
+  assert.equal(out.mAbs, 10);
+});