MC Tester Mod

This mod allows using the automated structure based test system Mojang created for minecraft. The test system is only partially included in minecraft and this mod adds some missing parts to make it work. Furthermore, more features, for example autorun and non-0 exit-code on failure, are included to make the usage more convenient. The tests can be run with gradle or even with github actions see the repositories' build workflow file.

Usage as a dependency

Add the following to build.gradle (use existing dependencies/maven blocks) or put a build from the releases page into the mods folder. Currently the mctester mod will be loaded at every startup e.g. gradlew runClient or gradlew runServer.

dependencies {
    modImplementation 'com.github.2No2Name:McTester:VERSION_TAG_HERE'
}

repositories {
    allprojects {
        repositories {
            maven { url 'https://jitpack.io' }
        }
    }
}

Edit the config/mctester.properties file to adjust available options. Put test structures into the gameteststructures directory. Prefixing the structure names with a template name, e.g. test_redstone. will automatically use the test function from the template. Other test functions can be defined by using the @Test annotation, cf. Example test functions.

Available test templates

See the test templates file

• test_redstone.: Replaces all red stained terracotta with redstone blocks in the structure's area (test area) when the test is activated. Automatically fails after 20 seconds. Test succeeds if there is a powered noteblock on top of an emerald block in the test area. The emerald block positions are cached at the start of the test, so placing or removing more emerald blocks may break the test success detection.

Available options

The following options can changed in the mctester.properties config text file. You may need to create the file manually.

Format: option=VALUE, possible values: true, serveronly, clientonly, false
Defaults:

• autostart=false Automatically runs all tests when a world is loaded.
• autostart.shuffle=true Shuffles the tests before automatically running them.
• autostart.shuffle.seed Set the shuffle seed for debug purposes. When this option is not defined, a random seed is used.
• crashOnFail=false Automatically crashes the server when any test fails.
• shutdownAfterTest=false Automatically shut down the server after the tests finished.
• stayUpAfterFail=false Do not shutdown the server if a test failed.
• isDevelopment=false Sets Minecraft's SharedConstants.isDevelopment field if true.
• includeExampleTests=false Loads example test functions defined by this mod. Templates are always loaded.

Setup for development

For setup instructions please see the fabric wiki page that relates to the IDE that you are using.