then:
        expandDir.file("dir/file1").assertContents(equalTo("contents of dir/file1"))
        expandDir.file("file2").assertContents(equalTo("contents of file2"))
    }

    void createsDeflatedZipFile() {
        given:
        zip(dir("dir"), file("dir/file1"), file("file2"))

        when:
        TestFile expandDir = tmpDir.getTestDirectory().file("expanded")
        zipFile.unzipTo(expandDir)