🚀 🍮 Testing techniques in Java 🍮 🚀

This repository contains a project to explore basic test techniques in Java.

Notes:

• All test are passing, even the bad ones.
• To explore similar techniques in Go, please check this repository also, you will find theoretical information about testing.
• If you'll use this repository for study. I strongly recommend to follow commit by commit.

🧲 Environment Setup

🛠️ Needed tools

1. Java 17
2. Maven
3. Docker and Docker compose (I use Docker version 23.01.1 and docker-compose v2.17.0)

🏃🏻 Application execution

1. Make sure to download all Needed tools
2. Clone the repository
3. Build up maven project

mvn dependency:resolve

4. Compile the project

mvn compile && mvn package

5. Run test, this step will start the docker environment (make sure ports 8080 and 3306 is not in use)

make all

5. Enjoy! 😎

📚 References

• Mockito
• Mockito Spy
• Spring Boot
• Spring Boot Test
• Cucumber
• Parallel testing Java using Maven

✏️ Notes

Mockito spy allow to modify the behavior of a method in a class. It is useful when you want to test a method that calls other methods in the same class.

🥒 Cucumber instructions

1. Add dependencies

<dependency>
    <groupId>io.cucumber</groupId>
    <artifactId>cucumber-java</artifactId>
    <version>7.1.0</version>
    <scope>test</scope>
</dependency>

<dependency>
    <groupId>io.cucumber</groupId>
    <artifactId>cucumber-junit</artifactId>
    <version>7.1.0</version>
    <scope>test</scope>
</dependency>

2. Create a feature file in src/test/features
3. Create a Java Class to receive steps

// Annotations imports
import io.cucumber.java.en.Given;
import io.cucumber.java.en.Then;

@Given("I send a GET request to {string}")
public void i_send_a_get_request_to(String endpoint) {
    // Write code here that turns the phrase above into concrete actions
    throw new io.cucumber.java.PendingException();
}

4.Create a Test class to run the feature

@RunWith(Cucumber.class)
@CucumberOptions(
    features = "src/test/features",
    glue = "<PACKAGE WHERE STEP 2 CLASS EXISTS>")
@SpringBootTest
public class HttpStudentGetterTest {
    // No body needed
}

5. Run the test class

🙅🏻‍♂️ Exclude testing

Using maven, exclude some test is easy, just subtract the suffix Test from the class name.