Test maven plugin

[nulls]

Create a simple project on maven and configure maven plugin for diktat with version 2.0.0-rc.8

Todo:

• Add example with multimodules
• Test a single module
• Test multi module
• Test githubActions via -Ddiktat.githubActions=true
• Test two reporters: plain configured via configuration and githubActions configured via environment variable (blocked by Support multiple reporters in Maven #1818)
  Test scenario:

1. Configure reporters:

<configuration>
    <diktatConfigFile>diktat-analysis.yml</diktatConfigFile>
    <inputs>
        <input>${project.basedir}/src/main/kotlin</input>
    </inputs>
    <reporters>
        <plain/>
        <json>
                <output>${project.built.directory}/some-folder/some-file.json</output>
        </json>
        <checkstyle/>
    </reporters>
</configuration>

2. Run diktat check and validate that diktat generates 3 reports: plain to stdout, json to some specific file and checkstyle (xml) to default location target/reports/diktat/diktat.xml
3. Run diktat check with environment variable githubActions and validate that diktat generates 4 reports: plain to stdout, json to some specific file, checkstyle (xml) to default location target/reports/diktat/diktat.xml and sarif report to default location target/reports/diktat/diktat.sarif
4. Add configuration for gitHubActions to reporters:

    <reporters>
        <gitHubActions/>
        <plain/>
        <json>
                <output>${project.built.directory}/some-folder/some-file.json</output>
        </json>
        <checkstyle/>
    </reporters>

And validate that diktat generates 4 reports with and without environment variable githubActions

Found issues:

• Configuration file diktat-analysis.yml doesn't exist #1814

[orchestr7]

We already should have a simple maven project in our repo in examples

[nulls]

How to build snapshot version of plugin:
gradlew.bat :diktat-api:publishToMavenLocal :diktat-common:publishToMavenLocal :diktat-rules:publishToMavenLocal :diktat-ktlint-engine:publishToMavenLocal :diktat-runner:publishToMavenLocal :diktat-maven-plugin:publishToMavenLocal

This command builds and uploads a snapshot version to maven local repository.
Version is printed in logs:

Reckoned version: 2.0.0-rc.8.113+6211a81