feat: native clipboard image sync (Linux, opt-in sync_images)

internal/peer/peer_test.go

@@ -61,3 +61,35 @@ func TestBroadcastEmptyPeers(t *testing.T) {
 	b.Broadcast("test")
 	b.Broadcast("")
 }
+
+func TestBroadcastImage(t *testing.T) {
+	received := make(chan dedup.Payload, 1)
+
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		var p dedup.Payload
+		if err := json.NewDecoder(r.Body).Decode(&p); err != nil {
+			t.Errorf("decode: %v", err)
+		}
+		received <- p
+		w.WriteHeader(http.StatusNoContent)
+	}))
+	defer ts.Close()
+
+	b := NewBroadcaster([]config.PeerConfig{{Name: "p", Addr: ts.Listener.Addr().String()}}, "my-machine", Options{})
+	b.BroadcastImage("image/png", []byte{1, 2, 3})
+
+	select {
+	case p := <-received:
+		if p.Mime != "image/png" {
+			t.Errorf("mime = %q, want \"image/png\"", p.Mime)
+		}
+		if p.Data != "AQID" { // base64 of {1,2,3}
+			t.Errorf("data = %q, want \"AQID\"", p.Data)
+		}
+		if p.Text != "" {
+			t.Errorf("text = %q, want empty", p.Text)
+		}
+	case <-time.After(5 * time.Second):
+		t.Fatal("timeout waiting for image broadcast")
+	}
+}