updates to rotating machine struct

test/integration/registration.integration.test.js

@@ -0,0 +1,27 @@
+const test = require('node:test');
+const assert = require('node:assert/strict');
+
+const Machine = require('../../src/specificClass');
+const { makeMachineConfig, makeStateConfig, makeChildMeasurement } = require('../helpers/factories');
+
+test('registerChild listens to measurement events and stores measured pressure', async () => {
+  const machine = new Machine(makeMachineConfig(), makeStateConfig());
+  const child = makeChildMeasurement({ positionVsParent: 'downstream', type: 'pressure', unit: 'mbar' });
+
+  machine.registerChild(child, 'measurement');
+
+  child.measurements
+    .type('pressure')
+    .variant('measured')
+    .position('downstream')
+    .value(123, Date.now(), 'mbar');
+
+  const stored = machine.measurements
+    .type('pressure')
+    .variant('measured')
+    .position('downstream')
+    .getCurrentValue('mbar');
+
+  assert.equal(typeof stored, 'number');
+  assert.equal(Math.round(stored), 123);
+});