package filemanager import "testing" type testDefinedData struct { f1 string f2 bool f3 int f4 func() } type testDefined struct { data interface{} field string result bool } var testDefinedCases = []testDefined{ {testDefinedData{}, "f1", true}, {testDefinedData{}, "f2", true}, {testDefinedData{}, "f3", true}, {testDefinedData{}, "f4", true}, {testDefinedData{}, "f5", false}, {[]string{}, "", false}, {map[string]int{"oi": 4}, "", false}, {"asa", "", false}, {"int", "", false}, } func TestDefined(t *testing.T) { for _, pair := range testDefinedCases { v := defined(pair.data, pair.field) if v != pair.result { t.Error( "For", pair.data, "expected", pair.result, "got", v, ) } } }