Sharing test sources in gradle

dependency.build.gradle

configurations {
    // Creating testOutput configuration to bundle test dependencies and sources so other projects can depend on them
    testOutput.extendsFrom(testCompile)
}

dependencies {
    testOutput sourceSets.test.output
}

dependent.build.gradle

dependencies {
  // Equivalent to maven type 'test-jar':
  testCompile group: '', name: '', version: '', classifier: 'tests'
  // In multi-module build:
  testCompile project(path: ':dependency', configuration: 'testOutput')
}