created compare test

src/server/test/web/readingsCompareMeter.js

@@ -0,0 +1,41 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/*
+    This file tests the readings retrieval API compare chart meters.
+    See: https://github.com/OpenEnergyDashboard/DesignDocs/blob/main/testing/testing.md for information.
+*/
+
+const { chai, mocha, app } = require('../common');
+const Unit = require('../../models/Unit');
+const { prepareTest,
+    expectCompareToEqualExpected,
+    getUnitId,
+    ETERNITY,
+    METER_ID } = require('../../util/readingsUtils');
+
+mocha.describe('readings API', () => {
+    mocha.describe('readings test, test if data returned by API is as expected', () => {
+        mocha.describe('for compare charts', () => {
+            mocha.describe('for meters', () => {
+                // Test 15 minutes over all time for flow unit.
+                mocha.it('Expected and actual data should line up', async () => {
+                    await prepareTest(unitData, conversionData, meterData);
+                    // Get the unit ID since the DB could use any value.
+                    const unitId = await getUnitId('kWh');
+                    const expected = '';
+                    //for compare, need the unitID, currentStart, currentEnd, shift
+                    const res = await chai.request(app).get(`/api/compareReadings/meters/${METER_ID}`)
+                        .query({ 
+                            currStart: "2022-10-30T00:00:00.000Z",
+                            currEnd: "2022-10-31T17:00:00.000Z",
+                            shift: 'P1D',
+                            graphicUnitID: unitId
+                        });
+                    expectCompareToEqualExpected(res, expected);
+                });
+            });
+        });
+    });
+});