Wiremock For Java Developers for Pragmatic Code School

What you'll learn
This course will help the students to learn about "how to write unit tests" which involves RESTFUL API integrations.
Build REST API Clients using Spring Webclient
Write Unit Tests that covers all the possible scenarios in a REST based interaction
Mock an External Service using WireMock
Build a robust REST Client by simulating Network Errors
Build a robust REST Client by simulating Network Latency
Unit Test the out of the REST Client
Requirements
Any one of the IDE such as IntelliJ, Eclipse etc.,
Java Experience is a must
Experience building REST clients
Experience writing with JUnit Tests
Description
WireMock is a simulator for HTTP-based APIs or MockServer. REST APIs are everywhere today as it's the modern and easiest way to build a functionality and expose it to the real world. When it comes to writing Unit Test Cases that involve REST-based interactions there is always a challenge in testing error responses , network faults, latency and outs. WireMock is going to solve this problem of the application code that depends on the external service by mocking the actual service.In MicroServices Architecture, It is pretty common for services to depend on one other and it's always a challenge to write test cases for the code that depends on other external services. WireMock provides the necessary tools to simulate an external service so the code that depends on the external service can be tested which helps to build the robust REST Client.This course is going to cover the techniques that are listed below using WireMock:Service VirtualizationSimulating the External ServiceSimulating LatencySimulating Error response Simulating Network errorsLearn to integrate the most powerful HTTP Mock library - WireMock into your application to build a Resilient and Robust REST API clients.Why you should use WireMock If your application depends on an API that does not exist but still you would like to build the REST Client then WireMock can help support that kind of development.If you would to cover all the edge cases scenarios such as NetWork Errors, Faults, Latency and Run Exception in your REST Client then start using WireMockIf you would like to write Unit Test cases that covers all the possible scenarios that can happen in a REST based interaction then start using WireMock.In a MicroServices Architecture it is pretty common for your services to depend on other. WireMock is a powerful simulation tool to simulate the service that your application depends on it. In a nutshell, WireMock is a Service Virtualization tool.What's Covered in this CourseIntroduction to WireMock Learn to build REST Client using the Spring WebClient.Learn to virtualize an External ServiceLearn to create Stubs using WireMockLearn to Simulate Network Errors, Latency, Network outs and more.Learn to run WireMock using JUnit4 and JUnit5 platformLearn to integrate and run WireMock in Spring Boot applicationPrerequisites for the Course:Experience working with Java applicationsJava 8 or HigherKnowledge of building RESTFUL API ClientsKnowledge of RESTFUL APIExperience working with Gradle/MavenExperience working with Intellij, Eclipse etc.,Section : Introduction to WireMockIn this section, I will cover the Introduction to WireMock from the theoretical perspective.Why WireMock What is WireMock WireMock vs Mocking Libraries - A quick comparison between WireMock and Mockito.Section : Setting up the WorkSpace for the courseIn this section, we will set up the workspace for this course.Section : Build REST Clients using Spring WebClient - Hands OnIn this section, we will code and learn how to build a REST client using WebClient.Set up the base project movies-app for this courseBuild the Rest Clients that will be used throughout the course using Spring WebClientBuild Rest Clients that covers the HTTP Methods such as GET, POST, PUT and DELETESection : Setting Up WireMockIn this section we will configure the WireMock in to our movies-app project.Section : Build Stubs Using WireMock - Hands OnIn this section, we will code and learn about how to create Stubs using wiremock and have test case interact with wiremock instead of the actual service.Learn about how to create stubs using WireMockLearn to create stubs for different HTTP Methods such as GET, POST, PUT and DELETELearn to Simulate HTTP Responses with 400-Bad RequestLearn about how to perform ResponseTemplating in WireMockSection: Verifying the Stubs - Hands OnIn this section ,I will cover about how to make sure the stubs are invoked as expected by using the Verification DSL.Explore the Verify DSL in WireMockSection : Simulating Server/Fault Responses - Hands OnIn this section , I will cover how to simulate the fault HTTP responses such as 5xx Errors, Fault Responses using WireMock.Learn about the difference between ServerError and Fault responsesLearn to simulate a Server Error using WireMockLearn to simulate a Network Error using WireMockSection : Simulating Latency - Hands OnIn this section, I will cover how to configure out and simulate latency so that the client s out if the response is not received within the configured .Learn to configure the out in the REST ClientLearn to Simulate Latency and test your REST Client s out as expectedSection : Selective Proxying - Hands OnIn this section, we will learn about "What is Selective proxying" and "how to implement Selective proxying" using Wiremock.Learn about What is Selective Proxying and When to use Selective ProxyingLearn to simulate Selective Proxying using WireMockSection : Running WireMock on JUnit4In this section, we will code and learn how to run a wiremock on a JUnit4 based environment.Section : Running WireMock on Spring Boot - Hands OnIn this section, I will cover how to run and configure WireMock in a Spring Boot project.Section: Running WireMock with Spring Boot and JUnit5In this section, we will code and learn about how to run the Spring Boot Project in a JUnit5 environment.By completing this course, you will have a pretty good idea about the following:How to Integrate WireMock in to your project How to Build resilient RESTFUL API ClientsThanks for taking your to view my course and hope to see you in my course.

Overview

Section 1: Getting Started with Course

Lecture 1 Course Introduction & Objectives

Lecture 2 Pre-Requesities

Section 2: Introduction to WireMock

Lecture 3 Why WireMock

Lecture 4 What is WireMock

Lecture 5 WireMock vs Mocking Libraries

Section 3: Slides for the course

Lecture 6 Slides for the course

Section 4: Setting up the WorkSpace for the course

Lecture 7 Overview of the application

Lecture 8 Source Code

Lecture 9 Set up the Movies RESTFUL Service

Lecture 10 Exploring the Movies RESTFUL Service[Optional]

Section 5: Build RESTFUL Clients using Spring WebClient

Lecture 11 Setting up the Movies App

Lecture 12 RestTemplate vs Spring WebClient

Lecture 13 Setting up the Movies Domain

Lecture 14 Build Movies REST Client using Spring WebClient

Lecture 15 Build Movies REST Client test using JUnit5

Lecture 16 WebClient - Retrieve Movie by Movie-ID

Lecture 17 WebClient - Retrieve Movie by Movie-Name

Lecture 18 WebClient - Retrieve Movie By Year

Lecture 19 WebClient - Add a new Movie - HTTP POST

Lecture 20 WebClient - Update a Movie - HTTP PUT

Lecture 21 WebClient - Delete a Movie - HTTP DELETE

Section 6: Setting Up WireMock

Lecture 22 Configuring WireMock

Section 7: Build Stubs Using WireMock - Hands On

Lecture 23 Overview

Lecture 24 Create the very first WireMock Stub

Lecture 25 How WireMock works Behind the scenes and Matches the Stub

Lecture 26 URL Matching Stub - urlPathEqualTo

Lecture 27 URL Matching Stub - urlPathMatching

Lecture 28 Generate Dynamic Http Response using ResponseTemplateTransformer

Lecture 29 Stub with 400 HttpStatus as Response

Lecture 30 Stub matches a Query Param using urlEqualTo and urlPathEqualTo

Lecture 31 Generate Dynamic Response Stub by reading Query Param from the request

Lecture 32 Stub with RequestBody - HTTP POST

Lecture 33 Dynamic Response Stub - HTTP POST

Lecture 34 Stub with 400 Bad Request Response - HTTP POST

Lecture 35 Stub for HTTP PUT

Lecture 36 Stub for HTTP DELETE

Section 8: Verifying the Stubs - Hands On

Lecture 37 Why Verify the Stubs

Lecture 38 Explore the verify DSL

Section 9: Simulating Server/Fault Responses - Hands On

Lecture 39 Introduction to Server/Fault Responses

Lecture 40 Simulating 5xx Response

Lecture 41 Simulating Fault Responses - Network Errors

Section 10: Simulating Latency - Hands On

Lecture 42 Configuring read/write out in Spring WebClient

Lecture 43 Simulating Latency

Section 11: Selective Proxying - Hands On

Lecture 44 What is Selective Proxying

Lecture 45 Simulating Selective Proxying

Section 12: Running WireMock on Junit 4

Lecture 46 WireMock on JUnit4

Lecture 47 Run WireMock on JUnit4

Section 13: Running WireMock on Spring Boot

Lecture 48 Overview and Project SetUp

Lecture 49 Building the Movies App Client Code

Lecture 50 Run WireMock on Spring Boot using @AutoConfigureWireMock - Approach 1

Lecture 51 Run WireMock on Spring Boot using WireMockRule- Approach 2

Section 14: Running WireMock with Spring Boot and JUnit5

Lecture 52 Configuring Spring Boot for JUnit5

Lecture 53 Run WireMock with Spring Boot and JUnit5

Lecture 54 Run WireMock with Spring Boot/JUnit5 using WireMockExtension

Developers who would like to learn building RESTFUL API Clients using Spring WebClient,Java Developers who would like to learn about building resilient RESTFUL API Clients,Developers who would like to write Unit Tests that depends on other services,Developers who would like to write Unit Tests that covers Latency, outs and Network faults

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