def METHOD_NAME(self):
    os = "windows"
    self.install(self.alpha_spec.get_filename())
    invalid_os_gppkg = GppkgSpec("alpha", "1.1", GPDB_VERSION, os)
    gppkg_file = self.build(invalid_os_gppkg, self.A_spec)
    with self.assertRaisesRegex(ExecutionError, "%s os required. %s os found" % (os, OS)):
        self.update(gppkg_file)