package models import ( "strings" "testing" ) func requireNoSuchMethod(t *testing.T, name string, err error) { t.Helper() if err == nil { t.Fatalf("%s: expected no such method error, got nil", name) } if !strings.Contains(err.Error(), "no such method") { t.Fatalf("%s: expected no such method error, got %v", name, err) } }