maven-code-quality-pom

Enforce and report code quality with JUnit, JaCoCo, Hamcrest, FindBugs, PMD, CodeNarc, Checkstyle (Google), Enforcer, Duplicate-Finder, JDepend, and more with this Maven POM.

Table of contents

• 1. Overview
• 2. Prerequisite software
• 3. Installation
• 4. Usage
  • 4.1. Run unit tests, evaluate complexity, and check coverage
  • 4.2. Generate site files
  • 4.3. Run quality checks
    • 4.3.1. mvn fmt:check
    • 4.3.2. mvn enforcer:display-info
    • 4.3.3. mvn site
    • 4.3.4. mvn checkstyle:check
    • 4.3.5. mvn duplicate-finder:check
    • 4.3.6. mvn findbugs:check
    • 4.3.7. mvn pmd:check
    • 4.3.8. mvn pmd:cpd-check
  • 4.3. Export reports to SonarCloud.io
• 5. Semantic version and CHANGELOG
• 6. Contributing to maven-code-quality-pom
• 7. License

1. Overview

Enforce and report code quality with:

1. Checkstyle with Google Java coding standards (maven-checkstyle-plugin)
2. CodeNarc (codenarc-maven-plugin)
3. Duplicate-Finder (duplicate-finder-maven-plugin)
4. Enforcer (maven-enforcer-plugin)
5. FindBugs (findbugs-maven-plugin)
6. fmt-maven-plugin formats your code using google-java-format, which follows Google's code styleguide (fmt-maven-plugin)
7. JDepend (jdepend-maven-plugin)
8. JUnit (junit5 with junit4 backwards compatibility)
9. JaCoCo (jacoco-maven-plugin)
10. PMD (maven-pmd-plugin)
11. Report site generation (maven-site-plugin)

and more with this Maven POM.

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The purpose of the project is to use the Maven Site Plugin to:

1. Use the Maven Site Plugin to generate meaningful test and quality reporting artifacts
2. Enforce test coverage thresholds and code standards
3. Prevent source code that does not conform to standards from being merged into master.

2. Prerequisite software

[]]java-jdk-dl-url      

maven-code-quality-pom is written in Java, which must be installed prior to use. maven-code-quality-pom manages Java dependencies with Maven and NPM for JavaScript dependencies.

1. Java^™️ EE 8 SDK: Either

   • oracle64-1.8.x1 or
   • openjdk:8-jdk-alpine

2. Maven

3. Node.js, which includes the node package manager (npm).

3. Installation

💡 If you're working on macOS, we recommend installing or updating software with Homebrew.

1. Fork or clone this repository.

$ git clone https://github.com/gregswindle/maven-code-quality-pom.git
$ cd maven-code-quality-pom

1. Install with Maven:

$ mvn clean install -DskipTests=true -Dmaven.javadocs.skip=true -B -V

1. Install Node.js dependencies:

$ npm install

4. Usage

4.1. Run unit tests, evaluate complexity, and check coverage

$ mvn test verify

4.2. Generate site files

To build the Maven reports site, open a Terminal and run:

$ mvn site

Then open maven-code-quality-pom/target/site/index.html in a Web browser.

4.3. Run quality checks

• 4.3.1. mvn fmt:check

  Formats all src/ and test/ Java code according to the Google Java style guide.

  ℹ️ mvn fmt:format runs with every build.

• 4.3.2. mvn enforcer:display-info

  Executes the defined enforcer-rules once per module and displays the current platform information

• 4.3.3. mvn site

  Generates the site for a single project.

• 4.3.4. mvn checkstyle:check

  Performs Checkstyle analysis and outputs violations or a count of violations to the console, potentially failing the build.

• 4.3.5. mvn duplicate-finder:check

  Finds duplicate classes/resources on the classpath.

• 4.3.6. mvn findbugs:check

  Identify defect (bug) patterns in your Java source code.

• 4.3.7. mvn pmd:check

  Fail the build if there were any PMD violations in the source code.

• 4.3.8. mvn pmd:cpd-check

  Fail the build if there were any CPD violations in the source code.

4.3. Export reports to SonarCloud.io

Before you connect to SonarCloud, you need:

• An active account on https://sonarcloud.io
• To set the ENVIRONMENT variable $SONAR_TOKEN

See "Using SonarCloud with Travis CI" for details.

Open a Terminal and run:

$ mvn clean org.jacoco:jacoco-maven-plugin:prepare-agent install sonar:sonar

View reports on SonarCloud.

5. Semantic version and CHANGELOG

The latest version of maven-code-quality-pom is 0.0.1-SNAPSHOT. View the CHANGELOG for details.

6. Contributing to maven-code-quality-pom

We welcome contributors with Pull Requests!

🍀 Read Contributing to maven-code-quality-pom to get started. 🍀

Contributions in the form of GitHub pull requests are welcome. Before embarking on a significant change, please adhere to the following guidelines:

1. Read the Code of Conduct.
2. Create an issue to discuss the proposed change and ensure that it is likely to be merged:
   • Report a defect (aka "bug")
   • Request a new feature
3. Follow Contributing to maven-code-quality-pom's coding conventions and Git workflow if you're willing and able to program (or want to learn how).

7. License

MIT © Greg Swindle.