update test cases (!!!)

listeners.go

@@ -390,10 +390,13 @@ func SplitNetworkAddress(a string) (network, host, port string, err error) {
 	firstErr := err
 
 	if err != nil {
+		a = strings.TrimPrefix(a, "[") // IPv6
+		a = strings.TrimSuffix(a, "]")
 		// in general, if there was an error, it was likely "missing port",
 		// so try adding a bogus port to take advantage of standard library's
-		// robust parser.
+		// robust parser, then strip the artificial port.
 		host, _, err = net.SplitHostPort(net.JoinHostPort(a, "0"))
+		port = ""
 	}
 
 	if err != nil {

listeners_test.go

@@ -31,7 +31,7 @@ func TestSplitNetworkAddress(t *testing.T) {
 	}{
 		{
 			input:     "",
-			expectErr: true,
+			expectHost: "",
 		},
 		{
 			input:      "foo",
@@ -42,7 +42,7 @@ func TestSplitNetworkAddress(t *testing.T) {
 		},
 		{
 			input:     "::",
-			expectErr: true,
+			expectHost: "::",
 		},
 		{
 			input:      "[::]",
@@ -77,7 +77,7 @@ func TestSplitNetworkAddress(t *testing.T) {
 		{
 			input:         "udp/",
 			expectNetwork: "udp",
-			expectErr:     true,
+			expectHost:    "",
 		},
 		{
 			input:         "unix//foo/bar",
@@ -185,7 +185,8 @@ func TestParseNetworkAddress(t *testing.T) {
 	}{
 		{
 			input:     "",
-			expectErr: true,
+			expectAddr: NetworkAddress{
+			},
 		},
 		{
 			input:          ":",
@@ -311,7 +312,8 @@ func TestParseNetworkAddressWithDefaults(t *testing.T) {
 	}{
 		{
 			input:     "",
-			expectErr: true,
+			expectAddr: NetworkAddress{
+			},
 		},
 		{
 			input:          ":",