Bug: fix displaying maps with structs as keys (#571)

* Added test case

* Fixed typo

* Added datetime to test

* Fixed issue

* Added test

* Added example with DateTime

* Removed dbg

Author: kraleppa

dev/live_views/main.ex

@@ -16,6 +16,13 @@ defmodule LiveDebuggerDev.LiveViews.Main do
       |> assign(func: fn a -> {:ok, a} end)
       |> assign(single_element_list: [%Phoenix.LiveComponent.CID{cid: 1}])
       |> assign(list: [%Phoenix.LiveComponent.CID{cid: 1}, %Phoenix.LiveComponent.CID{cid: 2}])
+      |> assign(
+        cid_map: %{
+          %Phoenix.LiveComponent.CID{cid: 1} => "1",
+          %Phoenix.LiveComponent.CID{cid: 2} => DateTime.utc_now(),
+          DateTime.utc_now() => "DateTime"
+        }
+      )
       |> assign(
         long_assign:
           "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua."

lib/live_debugger/utils/term_parser.ex

@@ -122,6 +122,9 @@ defmodule LiveDebugger.Utils.TermParser do
 
         %{content: [span]} ->
           {%{span | text: inspect(key, width: :infinity)}, black(" => ")}
+
+        %{content: _content} ->
+          {%{text: inspect(key, width: :infinity), color: "text-code-1"}, black(" => ")}
       end
 
     case to_node(value, suffix) do

test/utils/term_parser_test.exs

@@ -354,6 +354,47 @@ defmodule LiveDebugger.Utils.TermParserTest do
 
       assert TermParser.term_to_display_tree(term) == expected
     end
+
+    test "parses map with struct keys correctly" do
+      term = %{
+        %Phoenix.LiveComponent.CID{cid: 1} => "CID",
+        Date.new(2025, 7, 8) => "Date"
+      }
+
+      expected = %{
+        kind: "map",
+        children: [
+          %{
+            kind: "binary",
+            children: nil,
+            content: [
+              %{text: "{:ok, ~D[2025-07-08]}", color: "text-code-2"},
+              %{text: " => ", color: "text-code-2"},
+              %{text: "\"Date\"", color: "text-code-4"},
+              %{text: ",", color: "text-code-2"}
+            ],
+            expanded_before: nil,
+            expanded_after: nil
+          },
+          %{
+            kind: "binary",
+            children: nil,
+            content: [
+              %{text: "%Phoenix.LiveComponent.CID{cid: 1}", color: "text-code-1"},
+              %{text: " => ", color: "text-code-2"},
+              %{text: "\"CID\"", color: "text-code-4"}
+            ],
+            expanded_before: nil,
+            expanded_after: nil
+          }
+        ],
+        content: [%{text: "%{...}", color: "text-code-2"}],
+        expanded_before: [%{text: "%{", color: "text-code-2"}],
+        expanded_after: [%{text: "}", color: "text-code-2"}]
+      }
+
+      assert TermParser.term_to_display_tree(term) == expected
+    end
   end
 
   describe "term_to_copy_string/1" do