tests/3rdPartyTests/lib/build.gradle

apply plugin: 'android-library'

project.ext.fakeProvider = new com.android.tests.basic.buildscript.FakeProvider()
project.ext.fakeServer = new com.android.tests.basic.buildscript.FakeServer()

android {
    compileSdkVersion 15
    buildToolsVersion "18.0.1"

    deviceProvider project.ext.fakeProvider
    testServer project.ext.fakeServer
}

project.afterEvaluate {
    configure(fakeInstrumentTest) {
        doLast {
            String error = project.ext.fakeProvider.isValid()
            if (error != null) {
                throw new GradleException("Failed DeviceProvider usage: " + error)
            }
        }
    }

    configure(fake2Upload) {
        doLast {
            String error = project.ext.fakeServer.isValid()
            if (error != null) {
                throw new GradleException("Failed TestServer usage: " + error)
            }
        }
    }
}