def test_extract_change_topdir(self):
    src = os.path.join(self.tmp, "src")
    os.mkdir(src)
    a_long_dir = os.path.join(src, "a_long_dir")
    os.mkdir(a_long_dir)
    b = os.path.join(a_long_dir, "b")
    with open(b, "w") as fp:
        fp.write("b\n")
    dest = os.path.join(self.tmp, "dest")
    os.mkdir(dest)
    tar_gz = qibuild.archive.zip_unix(a_long_dir)
    qibuild.archive.extract(tar_gz, dest, topdir="a")
    a = os.path.join(dest, "a")
    ls_r = qibuild.sh.ls_r(a)
    self.assertEquals(ls_r, ["b"])
    a_zip = qibuild.archive.zip_win(a_long_dir)
    qibuild.archive.extract(a_zip, dest, topdir="aa")
    aa = os.path.join(dest, "aa")
    ls_r = qibuild.sh.ls_r(aa)
    self.assertEquals(ls_r, ["b"])