agent updates

test/measurement-builder.test.js

@@ -0,0 +1,29 @@
+const test = require('node:test');
+const assert = require('node:assert/strict');
+
+const MeasurementBuilder = require('../src/measurements/MeasurementBuilder.js');
+
+test('builder requires mandatory fields', () => {
+  assert.throws(() => new MeasurementBuilder().build(), /Measurement type is required/);
+  assert.throws(() => new MeasurementBuilder().setType('flow').build(), /Measurement variant is required/);
+  assert.throws(
+    () => new MeasurementBuilder().setType('flow').setVariant('measured').build(),
+    /Measurement position is required/
+  );
+});
+
+test('builder creates measurement with provided config', () => {
+  const measurement = new MeasurementBuilder()
+    .setType('flow')
+    .setVariant('measured')
+    .setPosition('upstream')
+    .setWindowSize(25)
+    .setDistance(3.2)
+    .build();
+
+  assert.equal(measurement.type, 'flow');
+  assert.equal(measurement.variant, 'measured');
+  assert.equal(measurement.position, 'upstream');
+  assert.equal(measurement.windowSize, 25);
+  assert.equal(measurement.distance, 3.2);
+});