How to test Spring @Scheduled

Question

How do I test @Scheduled job tasks in my spring-boot application?

 package com.myco.tasks;   public class MyTask {      @Scheduled(fixedRate=1000)      public void work() {          // task execution logic      }  } 

Answer 1

If we assume that your job runs in such a small intervals that you really want your test to wait for job to be executed and you just want to test if job is invoked you can use following solution:

Add Awaitility to classpath:

<dependency>     <groupId>org.awaitility</groupId>     <artifactId>awaitility</artifactId>     <version>3.1.0</version>     <scope>test</scope> </dependency> 

Write test similar to:

@RunWith(SpringRunner.class) @SpringBootTest public class DemoApplicationTests {      @SpyBean     private MyTask myTask;      @Test     public void jobRuns() {         await().atMost(Duration.FIVE_SECONDS)                .untilAsserted(() -> verify(myTask, times(1)).work());     } }