applyScript(buildFile, scriptFile)

        subBuildFile << addGradleListeners('sub project script')
        subBuildFile << addProjectListeners('sub project script', ':')
        subBuildFile << addProjectListeners('sub project script', ':sub')
        applyInlinePlugin(subBuildFile, 'Project', addProjectListeners('sub project plugin'))
        applyScript(subBuildFile, scriptFile)

        when:

        testFile('settings.gradle') << 'include \'a\', \'b\''
        testFile('external.gradle') << 'ext.appliedScript = this'
        testFile('build.gradle') << '''
allprojects {
   apply from: "$rootDir/external.gradle"
}
subprojects {
    assert appliedScript.class == rootProject.appliedScript.class
}
task doStuff
'''
        inTestDirectory().withTasks('doStuff').run()
    }