Avoid ebpf lib usage on non Linux

client/internal/ebpf/manager_linux_test.go

@@ -0,0 +1,40 @@
+package ebpf
+
+import (
+	"testing"
+)
+
+func TestManager_setFeatureFlag(t *testing.T) {
+	mgr := GeneralManager{}
+	mgr.setFeatureFlag(featureFlagWGProxy)
+	if mgr.featureFlags != 1 {
+		t.Errorf("invalid faeture state")
+	}
+
+	mgr.setFeatureFlag(featureFlagDnsForwarder)
+	if mgr.featureFlags != 3 {
+		t.Errorf("invalid faeture state")
+	}
+}
+
+func TestManager_unsetFeatureFlag(t *testing.T) {
+	mgr := GeneralManager{}
+	mgr.setFeatureFlag(featureFlagWGProxy)
+	mgr.setFeatureFlag(featureFlagDnsForwarder)
+
+	err := mgr.unsetFeatureFlag(featureFlagWGProxy)
+	if err != nil {
+		t.Errorf("unexpected error: %s", err)
+	}
+	if mgr.featureFlags != 2 {
+		t.Errorf("invalid faeture state, expected: %d, got: %d", 2, mgr.featureFlags)
+	}
+
+	err = mgr.unsetFeatureFlag(featureFlagDnsForwarder)
+	if err != nil {
+		t.Errorf("unexpected error: %s", err)
+	}
+	if mgr.featureFlags != 0 {
+		t.Errorf("invalid faeture state, expected: %d, got: %d", 0, mgr.featureFlags)
+	}
+}