net,os: disable more sysctl tests on iOS

Updates #34133

Change-Id: I27c75993176cf876f2d80f70982528258c509b68
Reviewed-on: https://go-review.googlesource.com/c/go/+/193845
Run-TryBot: Elias Naur <mail@eliasnaur.com>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>

src/net/interface_test.go

@@ -51,6 +51,9 @@ func ipv6LinkLocalUnicastAddr(ifi *Interface) string {
 }
 
 func TestInterfaces(t *testing.T) {
+	if runtime.GOOS == "darwin" && (runtime.GOARCH == "arm" || runtime.GOARCH == "arm64") {
+		t.Skipf("sysctl is not supported on iOS")
+	}
 	ift, err := Interfaces()
 	if err != nil {
 		t.Fatal(err)
@@ -82,6 +85,9 @@ func TestInterfaces(t *testing.T) {
 }
 
 func TestInterfaceAddrs(t *testing.T) {
+	if runtime.GOOS == "darwin" && (runtime.GOARCH == "arm" || runtime.GOARCH == "arm64") {
+		t.Skipf("sysctl is not supported on iOS")
+	}
 	ift, err := Interfaces()
 	if err != nil {
 		t.Fatal(err)
@@ -101,6 +107,9 @@ func TestInterfaceAddrs(t *testing.T) {
 }
 
 func TestInterfaceUnicastAddrs(t *testing.T) {
+	if runtime.GOOS == "darwin" && (runtime.GOARCH == "arm" || runtime.GOARCH == "arm64") {
+		t.Skipf("sysctl is not supported on iOS")
+	}
 	ift, err := Interfaces()
 	if err != nil {
 		t.Fatal(err)
@@ -128,6 +137,9 @@ func TestInterfaceUnicastAddrs(t *testing.T) {
 }
 
 func TestInterfaceMulticastAddrs(t *testing.T) {
+	if runtime.GOOS == "darwin" && (runtime.GOARCH == "arm" || runtime.GOARCH == "arm64") {
+		t.Skipf("sysctl is not supported on iOS")
+	}
 	ift, err := Interfaces()
 	if err != nil {
 		t.Fatal(err)

src/os/os_test.go

@@ -1521,6 +1521,9 @@ func testWindowsHostname(t *testing.T, hostname string) {
 }
 
 func TestHostname(t *testing.T) {
+	if runtime.GOOS == "darwin" && (runtime.GOARCH == "arm" || runtime.GOARCH == "arm64") {
+		t.Skipf("sysctl is not supported on iOS")
+	}
 	hostname, err := Hostname()
 	if err != nil {
 		t.Fatal(err)