metal: Check if returned value responds to selector

Author: tmc

macos/metal/metal_test.go

@@ -8,9 +8,10 @@ func TestMetalValid(t *testing.T) {
 
 func TestCreateSystemDefaultDevice(t *testing.T) {
 	d := CreateSystemDefaultDevice()
-	t.Log(d.HasSupportsFamily())
-	t.Log(d.SupportsFamily(GPUFamily(5001)))
-	t.Log("MaxThreadgroupMemoryLength", d.MaxThreadgroupMemoryLength())
-	t.Log("MaxBufferLength", d.MaxBufferLength())
-	t.Log("MaxThreadsPerThreadgroup", d.MaxThreadsPerThreadgroup())
+	if d.HasSupportsFamily() {
+		t.Log(d.SupportsFamily(GPUFamily(5001)))
+		t.Log("MaxThreadgroupMemoryLength", d.MaxThreadgroupMemoryLength())
+		t.Log("MaxBufferLength", d.MaxBufferLength())
+		t.Log("MaxThreadsPerThreadgroup", d.MaxThreadsPerThreadgroup())
+	}
 }