t.Fatalf("failed to start KMS plugin, err: %v", err)
	}
	t.Cleanup(result.CleanUp)
	if err := waitForBase64PluginToBeUp(result); err != nil {
		t.Fatalf("failed to start KMS plugin: err: %v", err)
	}
	return result
}

// waitForBase64PluginToBeUp waits until the plugin is ready to serve requests.
func waitForBase64PluginToBeUp(plugin *Base64Plugin) error {
	var gRPCErr error
	var resp *kmsapi.StatusResponse