updates

test/measurement-container-core.test.js

@@ -59,3 +59,39 @@ test('_convertPositionNum2Str maps signs to labels', () => {
   assert.equal(c._convertPositionNum2Str(1), 'downstream');
   assert.equal(c._convertPositionNum2Str(-1), 'upstream');
 });
+
+test('storeCanonical stores anchor unit internally and can emit preferred output units', () => {
+  const c = new MeasurementContainer({
+    windowSize: 10,
+    autoConvert: true,
+    defaultUnits: { flow: 'm3/h' },
+    preferredUnits: { flow: 'm3/h' },
+    canonicalUnits: { flow: 'm3/s' },
+    storeCanonical: true,
+  });
+
+  c.type('flow').variant('measured').position('upstream').value(3.6, 1, 'm3/h');
+
+  const internal = c.type('flow').variant('measured').position('upstream').getCurrentValue();
+  assert.ok(Math.abs(internal - 0.001) < 1e-9);
+
+  const flat = c.getFlattenedOutput({ requestedUnits: { flow: 'm3/h' } });
+  assert.ok(Math.abs(flat['flow.measured.upstream.default'] - 3.6) < 1e-9);
+});
+
+test('strict unit validation rejects missing required unit and incompatible units', () => {
+  const c = new MeasurementContainer({
+    windowSize: 10,
+    strictUnitValidation: true,
+    throwOnInvalidUnit: true,
+    requireUnitForTypes: ['flow'],
+  });
+
+  assert.throws(() => {
+    c.type('flow').variant('measured').position('upstream').value(10, 1);
+  }, /Missing source unit/i);
+
+  assert.throws(() => {
+    c.type('flow').variant('measured').position('upstream').value(10, 1, 'mbar');
+  }, /Incompatible|unknown source unit/i);
+});