given:
        file('gradle.properties') << """
systemProp.mySystemProp=properties file
"""
        buildFile << """
task printSystemProp {
    doLast {
        println "mySystemProp=\${System.getProperty('mySystemProp')}"
    }
}
"""
        when:
        succeeds ':printSystemProp'

        then:
        outputContains('mySystemProp=properties file')

        when: