How to setup JUnit testing in Gluon Project with Gradle

问题

I am trying to setup JUnit testing in my Gluon JavaFX Application. I am using the Gluon Eclipse Plugin with Gradle and Java 8.

My build.gradle file looks like this:

buildscript {
    repositories {
        jcenter()   
    }
    dependencies {
        classpath 'org.javafxports:jfxmobile-plugin:1.0.0-b10'
    }    
}

apply plugin: 'org.javafxports.jfxmobile'

repositories {
    jcenter()
}

dependencies {
        compile 'com.gluonhq:ignite-dagger:1.0.0'
        compile 'org.elasticsearch:elasticsearch:1.6.0'
        compile 'ch.qos.logback:logback-classic:1.1.5'
        testCompile 'junit:junit:4.12'
}

mainClassName = 'com.me.MyApplication'

jfxmobile {
    android {
        manifest = 'src/android/AndroidManifest.xml'
    }
    ios {
        infoPList = file('src/ios/Default-Info.plist')
    }
}

Resolving the dependency is no problem, but when running the 'test' task, gradle throws an error like this:

When running gradle with java 8, you must set the path to the old jdk, either with property retrolambda.oldJdk or environment variable JAVA6_HOME/JAVA7_HOME Could not execute build using Gradle distribution 'https://services.gradle.org/distributions/gradle-2.2.1-all.zip'.

I already tried to add the retrolambda plugin to gradle according to the plugin's README on GitHub, but it doesn't work so far. Could someone tell me what to do to configure my Gluon project so that I am able to run my JUnit tests with Gradle?

Some important addidtions:
For the plugin version it says: Gluon Tools 1.0.0.201508201514
I think I fogot to mention that I want to use Dagger dependency injection with Gluon Ignite which might be the real problem in my case as it requires Java 8 and might conflict with javafxports or something else. However, I'm not able to make full sense of the various error messages I've seen. My tests are empty, but they aren't even run, because it fails before.

回答1:

Your problem seems like a retroLambda configuration issue. If you go through the configuration page for the plugin, it states that if you don't have an environment variable set for JAVA6_HOME or JAVA7_HOME than you need to explicitly define oldJdk for the plugin to work properly.

来源：https://stackoverflow.com/questions/35656154/how-to-setup-junit-testing-in-gluon-project-with-gradle