test: add PacketsLive.CallsignView mount tests

test/aprsme_web/live/packets_live/callsign_view_test.exs

@@ -1,8 +1,36 @@
 defmodule AprsmeWeb.PacketsLive.CallsignViewTest do
   use AprsmeWeb.ConnCase
 
+  import Aprsme.PacketsFixtures
   import Phoenix.LiveViewTest
 
+  describe "mount" do
+    test "renders the page for a callsign with no existing packets", %{conn: conn} do
+      {:ok, _view, html} = live(conn, "/packets/NOPACKETS", on_error: :warn)
+      assert html =~ "NOPACKETS"
+    end
+
+    test "normalizes a lowercase callsign", %{conn: conn} do
+      {:ok, _view, html} = live(conn, "/packets/abc1xyz", on_error: :warn)
+      assert html =~ "ABC1XYZ"
+    end
+
+    test "renders with existing packet in db", %{conn: conn} do
+      _packet =
+        packet_fixture(%{
+          sender: "LIVEPKT-1",
+          base_callsign: "LIVEPKT",
+          ssid: "1",
+          received_at: DateTime.utc_now(),
+          lat: Decimal.new("33.0"),
+          lon: Decimal.new("-96.0")
+        })
+
+      {:ok, _view, html} = live(conn, "/packets/LIVEPKT-1", on_error: :warn)
+      assert html =~ "LIVEPKT-1"
+    end
+  end
+
   describe "live packet broadcast" do
     test "handles raw broadcast packet without :data key", %{conn: conn} do
       {:ok, view, _html} = live(conn, "/packets/DB0WUN-13")