This repository shows a basic setup for a command line application in Java build with Gradle.
Java 1.8 is expected to be installed on our system.
Having Gradle installed is optional as it is also included in this repository with the Gradle wrapper gradlew.
After cloning this repository, change into the newly created directory and run
./gradlew build
This will install all dependencies needed for the project as well as compile all source files into an executable JAR file.
All tests can be run by executing
./gradlew test
gradlew will automatically find all tests inside the src/test directory and run them.
The test for class Example is only verifying the return value of one method.
App on the other hand is tested via a test-double that gets injected.
This allows us to spy on the output of it.
We want to avoid printing anything to the screen while running the tests.
Injecting a test double in this instance is a nice way to isolate our application from the command line.
In the actual Main class we then inject System.out, which is Java's standard output stream.
After running gradlew jar the resulting JAR file is located in directory build/libs.
The application can now be run by executing
java -jar build/libs/java-gradle-command-line.jar
This project is licensed under the MIT License - see the license.md file for details.