package kvm

import "testing"

func TestParseProviderID_roundTrip(t *testing.T) {
	t.Parallel()
	id := formatProviderID("nas1", "proxy-abc123def456ghij")
	if id != "hosts/nas1/domains/proxy-abc123def456ghij" {
		t.Fatalf("formatProviderID() = %q", id)
	}
	host, name, err := parseProviderID(id)
	if err != nil {
		t.Fatalf("parseProviderID(%q) error = %v", id, err)
	}
	if host != "nas1" || name != "proxy-abc123def456ghij" {
		t.Errorf("parseProviderID(%q) = %q, %q", id, host, name)
	}
}

func TestParseProviderID_malformed(t *testing.T) {
	t.Parallel()
	tests := []struct {
		name string
		id   string
	}{
		{"empty", ""},
		{"gcp style", "zones/europe-west1-b/instances/proxy-x"},
		{"missing name", "hosts/nas1/domains/"},
		{"missing host", "hosts//domains/proxy-x"},
		{"too many segments", "hosts/nas1/domains/proxy-x/extra"},
		{"bare name", "proxy-x"},
	}
	for _, tc := range tests {
		t.Run(tc.name, func(t *testing.T) {
			t.Parallel()
			if _, _, err := parseProviderID(tc.id); err == nil {
				t.Errorf("parseProviderID(%q) error = nil, want error", tc.id)
			}
		})
	}
}