Testing Microservices in Java

Objective

The purpose of this repo is to serve as a reference when deciding what test levels to use to test a microservice.

Test Examples

The following testing levels can be observed:

• Unit Test | POJO | JUnit
• Unit Test | Spring Beans | Mocking Dependencies | Mockito
• Integration Test | Rest Controller - HTTP | MockMvc
• Integration Test | Persistence Layer - DB | JpaTest
• Component Test | Service | Cucumber and RestAssured
• End-to-End Test | Service | Cucumber, RestAssured and Selenium

SUT (System Under Test) as Docker Container

Steps to create the Docker image and run the container:

• mvn clean package - to package and create the jar file
• docker build -t sample-sut4test . - to build the Docker image
• docker run -d -p 8081:8081 sample-sut4test - to run the Docker container
• http://localhost:8081/ui/v1/employees - to check the application is running correctly

Workflow

sequenceDiagram
    Alice ->> Bob: Hello Bob, how are you?
    Bob -->> John: How about you John?
    Bob --x Alice: I am good thanks!
    Bob -x John: I am good thanks!
    Note right of John: Bob thinks a long<br/>long time, so long<br/>that the text does<br/>not fit on a row.
    Bob --> Alice: Checking with John...
    Alice -> John: Yes... John, how are you?

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