Gradle Error : Cannot infer Groovy class path : custom sourcesets for integration tests

Question

Getting this error when running custom task "integTest", tried on both Gradle 2.4 and 3.0. Still fairly new to gradle, could be something obvious.

FAILURE: Build failed with an exception.

What went wrong:

Cannot infer Groovy class path because no Groovy Jar was found on class path: file collection

The integration tests all run fine individually, it's just that I can't run them all because this task does not seem to be getting the right classpath.

Any insight would be appreciated.

Here is the relevant configuration:

sourceSets {
  integTest {
    groovy {
      compileClasspath += main.output + test.output
      runtimeClasspath += main.output + test.output
      srcDir file('src/integTest/groovy')
    }
  resources.srcDir file('src/integTest/resources')
  }
}

task integTest(type: Test) {
  testClassesDir = sourceSets.integTest.output.classesDir
  classpath = sourceSets.integTest.runtimeClasspath
}

UPDATE: Adding dependencies.

dependencies {
    compile "org.codehaus.groovy:groovy-all:2.4.5"
    compile "log4j:log4j:1.2.17"
    compile "org.slf4j:slf4j-simple:1.7.12"
    compile project(':module-loader')
    testCompile "org.spockframework:spock-core:1.0-groovy-2.4"
}

Answer 1

I added this to the build.gradle file and it seems to be working now:

configurations {
    integTestCompile.extendsFrom testCompile
    integTestRuntime.extendsFrom testRuntime
}