Method TestCustomAuthority

internal/resolver/dns/dns_resolver_test.go:1125–1228

Tests different cases for a user's dial target that specifies a non-empty authority (or Host field of the URL).

(t *testing.T)

// Tests different cases for a user's dial target that specifies a non-empty
// authority (or Host field of the URL).
func (s) TestCustomAuthority(t *testing.T) {
	tests := []struct {
		name          string
		authority     string
		wantAuthority string
		wantBuildErr  bool
	}{
		{
			name:          "authority with default DNS port",
			authority:     "4.3.2.1:53",
			wantAuthority: "4.3.2.1:53",
		},
		{
			name:          "authority with non-default DNS port",
			authority:     "4.3.2.1:123",
			wantAuthority: "4.3.2.1:123",
		},
		{
			name:          "authority with no port",
			authority:     "4.3.2.1",
			wantAuthority: "4.3.2.1:53",
		},
		{
			name:          "ipv6 authority with brackets and no port",
			authority:     "[::1]",
			wantAuthority: "[::1]:53",
		},
		{
			name:          "ipv6 authority with brackets and non-default DNS port",
			authority:     "[::1]:123",
			wantAuthority: "[::1]:123",
		},
		{
			name:          "host name with no port",
			authority:     "dnsserver.com",
			wantAuthority: "dnsserver.com:53",
		},
		{
			name:          "no host port and non-default port",
			authority:     ":123",
			wantAuthority: "localhost:123",
		},
		{
			name:          "only colon",
			authority:     ":",
			wantAuthority: "",
			wantBuildErr:  true,
		},
		{
			name:          "ipv6 name ending in colon",
			authority:     "[::1]:",
			wantAuthority: "",
			wantBuildErr:  true,
		},
		{
			name:          "host name ending in colon",
			authority:     "dnsserver.com:",
			wantAuthority: "",