GebConfig.groovyはGebの環境設定ファイルである。 参考: http://www.gebish.org/manual/1.1/ Geb attempts to load a ConfigSlurper script named GebConfig.groovy from the default package (in other words, in the root of a directory that is on the classpath). If it is not found, Geb will try to load a ConfigSlurper class named GebConfig from the default package - this is useful if you run tests that use Geb from an IDE be