Introduction to AWAITILITY framework and analysis of usage

AWaitility is a library of Java programming language, which is used to test asynchronous code.It provides some simple and easy to read grammar, making it easier to write asynchronous tests.When writing asynchronous testing, you usually need to wait for a period of time to observe the code.In this case, using the traditional thread sleep method will cause the code to execute the time uncertain, making the test results unstable.The AWaitility library provides a more reliable and flexible way to wait for the execution of the code. Before using AWAITILITY, you need to add corresponding dependencies to the project.You can add Awaitility to the project dependency item through Maven or Gradle construction tools.For example, in the Maven project, the following dependencies can be added to the POM.XML file: <dependency> <groupId>org.awaitility</groupId> <artifactId>awaitility</artifactId> <version>3.1.6</version> <scope>test</scope> </dependency> After adding the dependencies, you can use Awaitility in the test class to write asynchronous test code.Below is a simple example, showing the process of using Awaitility to wait for the asynchronous code to execute: import org.awaitility.Awaitility; import org.junit.Test; public class MyServiceTest { @Test public void testAsyncMethod() { MyService myService = new MyService(); // Call the asynchronous method here, such as MyService.asyncmetHod () Awaitility.await().until(() -> myService.isAsyncMethodCompleted()); // Check the execution results of the asynchronous method here } } In the above example, we created a service class called MyService and called one of the asynchronous methods (ie, asyncmethod) in the test method.Then, we use the AWAITILITY.AWAIT () method to wait for the execution of the asynchronous method.This method needs to pass a Lambda expression that returns a Boolean value to determine whether to complete the waiting conditions. If the condition is true, the code will continue to be executed immediately; if the condition is false, Awaitility will wait for a cycle and throw an exception when waiting time.By default, Awaitility will wait for the condition within 10 seconds, and you can change the waiting time through the. With (). Pollinterval () method. After the waiting conditions are met, we can continue to perform other test code, such as checking the execution results of the asynchronous method. By using Awaitility, we can easily test the behavior of asynchronous code without using traditional methods such as thread sleep.It provides flexible and reliable methods to wait for the execution of the code and continue to perform the follow -up test code when the conditions are met.This allows us to write more stable and reliable asynchronous tests.