then:
        def jar = file('build/test.jar')
        def manifest = jar.manifest
        manifest.mainAttributes.getValue('attr') == 'from manifest'
    }

    def excludeDuplicatesUseMetaInfOverRegularFiles() {
        createDir('meta-inf1') {
            file 'file.txt'
        }

        createDir('meta-inf2') {
            file 'file.txt'
        }