func TestKeyringMiss(t *testing.T) {
	tests := []struct {
		globURL   string
		lookupURL string
	}{
		{
			globURL:   "https://hello.kubernetes.io",
			lookupURL: "world.mesos.org/foo/bar",
		},
		{
			globURL:   "https://*.docker.com",
			lookupURL: "prefix.docker.io",
		},
		{
			globURL:   "https://suffix.*.io",
			lookupURL: "prefix.docker.io",
		},
		{
			globURL:   "https://prefix.docker.c*",