Groovy script to find out the difference between two maps. Can be useful to debug failing unit tests when the objects in comparison are big jsons.

MapDiff.groovy

def mapDiff(Map m1, Map m2, String path="") {    m1.each{k,v->
        if(m2[k] != m1[k]) {
            if(m1[k] in Map) {
                mapDiff(m1[k] as Map, m2[k] as Map, "${path}${k}.")
            }
            else {
                println("${path}${k} ->");
                println("\texpected: ${m1[k]}")
                println("\tactual: ${m2[k]}")
                if (m1[k] in List) {
                    print("\texpected but missing elements: ")
                    m1[k].each {
                        if(!m2[k].any{it1->return it1==it}) {
                            print(it + ", ")
                        }
                    }
                    print("\tnot expected but found: ")
                    m2[k].each {
                        if(!m1[k].any{it1->return it1==it}) {
                            print(it + ", ")
                        }
                    }

                }
                println("")
            }
        }

    }
}