step 1 : setting konfigurasi

node_modules/node-cron/test/scheduler-test.js

@@ -0,0 +1,91 @@
+const { assert } = require('chai');
+const sinon = require('sinon');
+const Scheduler = require('../src/scheduler');
+
+describe('Scheduler', () => {
+    beforeEach(() => {
+        this.clock = sinon.useFakeTimers();
+    });
+
+    afterEach(() => {
+        this.clock.restore();
+    });
+
+    it('should emit an event on matched time', (done) => {
+        let scheduler = new Scheduler('* * * * * *');
+
+        scheduler.on('scheduled-time-matched', (date) => {
+            assert.isNotNull(date);
+            assert.instanceOf(date, Date);
+            scheduler.stop();
+            done();
+        });
+
+        scheduler.start();
+        this.clock.tick(1000);
+    });
+
+    it('should emit an event every second', (done) => {
+        let scheduler = new Scheduler('* * * * * *');
+        let emited = 0;
+        scheduler.on('scheduled-time-matched', (date) => {
+            emited += 1;
+            assert.isNotNull(date);
+            assert.instanceOf(date, Date);
+            if(emited === 5){
+                scheduler.stop();
+                done();
+            }
+        });
+        scheduler.start();
+        this.clock.tick(5000);
+    });
+
+    it('should recover missed executions', (done) => {
+        this.clock.restore();
+        let scheduler = new Scheduler('* * * * * *', null, true);
+        let emited = 0;
+        scheduler.on('scheduled-time-matched', () => {
+            emited += 1;
+        });
+        scheduler.start();
+        let wait = true;
+        let startedAt = new Date();
+        
+        while(wait){
+            if((new Date().getTime() - startedAt.getTime()) > 1000){
+                wait = false;
+            }
+        }
+
+        setTimeout(() => {
+            scheduler.stop();
+            assert.equal(2, emited);
+            done();
+        }, 1000);
+    }).timeout(3000);
+
+    it('should ignore missed executions', (done) => {
+        this.clock.restore();
+        let scheduler = new Scheduler('* * * * * *', null, false);
+        let emited = 0;
+        scheduler.on('scheduled-time-matched', () => {
+            emited += 1;
+        });
+        scheduler.start();
+        let wait = true;
+        let startedAt = new Date();
+        
+        while(wait){
+            if((new Date().getTime() - startedAt.getTime()) > 1000){
+                wait = false;
+            }
+        }
+
+        setTimeout(() => {
+            scheduler.stop();
+            assert.equal(1, emited);
+            done();
+        }, 1000);
+    }).timeout(3000);
+});