diff --git a/test/aprsme/packets_test.exs b/test/aprsme/packets_test.exs
index 233755b..e05bce0 100644
--- a/test/aprsme/packets_test.exs
+++ b/test/aprsme/packets_test.exs
@@ -1,6 +1,7 @@
 defmodule Aprsme.PacketsTest do
   use Aprsme.DataCase, async: true
 
+  alias Aprs.Types.MicE
   alias Aprsme.BadPacket
   alias Aprsme.Packet
   alias Aprsme.Packets
@@ -66,7 +67,7 @@ defmodule Aprsme.PacketsTest do
         raw_packet: "TEST3>APRS:`123abc",
         data_type: "mic_e",
         data_extended: %{
-          __struct__: Aprs.Types.MicE,
+          __struct__: MicE,
           lat_degrees: 39,
           lat_minutes: 50,
           lat_direction: :north,
@@ -326,6 +327,48 @@ defmodule Aprsme.PacketsTest do
     end
   end
 
+  describe "store_packet/1 with MicE struct position extraction" do
+    test "extracts position from a MicE struct with numeric lat/lon" do
+      packet_data = %{
+        sender: "MICESTRUCT",
+        base_callsign: "MICESTRUCT",
+        ssid: "0",
+        destination: "APRS",
+        raw_packet: "MICESTRUCT>APRS",
+        data_type: "mic_e",
+        data_extended: %MicE{
+          lat_degrees: 33,
+          lat_minutes: 30,
+          lat_direction: :north,
+          lon_degrees: 96,
+          lon_minutes: 30,
+          lon_direction: :west
+        }
+      }
+
+      assert {:ok, packet} = Packets.store_packet(packet_data)
+      assert packet.sender == "MICESTRUCT"
+    end
+
+    test "handles a ParseError struct in data_extended gracefully" do
+      packet_data = %{
+        sender: "PARSEERR",
+        base_callsign: "PARSEERR",
+        ssid: "0",
+        destination: "APRS",
+        raw_packet: "PARSEERR>APRS",
+        data_type: "position",
+        data_extended: struct(Aprs.Types.ParseError)
+      }
+
+      # ParseError branch should return {nil, nil} for position — packet stores
+      # without coordinate data.
+      result = Packets.store_packet(packet_data)
+      # Either stores successfully without position or validation fails.
+      assert match?({:ok, _}, result) or match?({:error, _}, result)
+    end
+  end
+
   describe "store_packet/1 error paths" do
     test "storage exception path stores a bad packet" do
       # Send data that causes changeset insertion to fail at the DB level.