Support config-driven output formatting

test/outputUtils.test.js

@@ -0,0 +1,69 @@
+const OutputUtils = require('../src/helper/outputUtils');
+
+describe('OutputUtils', () => {
+  let outputUtils;
+  let config;
+
+  beforeEach(() => {
+    outputUtils = new OutputUtils();
+    config = {
+      general: {
+        name: 'Pump-1',
+        id: 'node-1',
+        unit: 'm3/h',
+      },
+      functionality: {
+        softwareType: 'pump',
+        role: 'test-role',
+      },
+      asset: {
+        supplier: 'EVOLV',
+        type: 'sensor',
+      },
+      output: {
+        process: 'process',
+        dbase: 'influxdb',
+      },
+    };
+  });
+
+  it('keeps legacy process output by default', () => {
+    const msg = outputUtils.formatMsg({ flow: 12.5 }, config, 'process');
+    expect(msg).toEqual({
+      topic: 'Pump-1',
+      payload: { flow: 12.5 },
+    });
+  });
+
+  it('keeps legacy influxdb output by default', () => {
+    const msg = outputUtils.formatMsg({ flow: 12.5 }, config, 'influxdb');
+    expect(msg.topic).toBe('Pump-1');
+    expect(msg.payload).toEqual(expect.objectContaining({
+      measurement: 'Pump-1',
+      fields: { flow: 12.5 },
+      tags: expect.objectContaining({
+        id: 'node-1',
+        name: 'Pump-1',
+        softwareType: 'pump',
+      }),
+    }));
+  });
+
+  it('supports config-driven json formatting on the process channel', () => {
+    config.output.process = 'json';
+    const msg = outputUtils.formatMsg({ flow: 12.5 }, config, 'process');
+    expect(msg.topic).toBe('Pump-1');
+    expect(typeof msg.payload).toBe('string');
+    expect(msg.payload).toContain('"measurement":"Pump-1"');
+    expect(msg.payload).toContain('"flow":12.5');
+  });
+
+  it('supports config-driven csv formatting on the database channel', () => {
+    config.output.dbase = 'csv';
+    const msg = outputUtils.formatMsg({ flow: 12.5 }, config, 'influxdb');
+    expect(msg.topic).toBe('Pump-1');
+    expect(typeof msg.payload).toBe('string');
+    expect(msg.payload).toContain('Pump-1');
+    expect(msg.payload).toContain('flow=12.5');
+  });
+});