Got almost all tests passing, except a couple sending a tree document…

… to the IME. Next: Change DocumentPosition to include a NodePath instead of a nodeId.

super_editor/lib/src/core/document.dart

@@ -518,6 +518,9 @@ class NodePath {
 
   NodePath addSubPath(String nodeId) => NodePath([...nodeIds, nodeId]);
 
+  @override
+  String toString() => "[NodePath] - ${nodeIds.join(" > ")}";
+
   @override
   bool operator ==(Object other) =>
       identical(this, other) ||
@@ -526,7 +529,7 @@ class NodePath {
           const DeepCollectionEquality().equals(nodeIds, other.nodeIds);
 
   @override
-  int get hashCode => nodeIds.hashCode;
+  int get hashCode => const ListEquality().hash(nodeIds);
 }
 
 /// A [DocumentNode] that contains other [DocumentNode]s in a hierarchy.

super_editor/lib/src/default_editor/document_ime/document_serialization.dart

@@ -453,9 +453,15 @@ class DocumentImeSerializer {
 
   TextPosition _documentToImePosition(DocumentPosition docPosition) {
     editorImeLog.fine("Converting DocumentPosition to IME TextPosition: $docPosition");
-    final imeRange = docTextNodesToImeRanges[docPosition.nodeId];
+    // FIXME: don't assume top-level node
+    final nodePath = NodePath.forNode(docPosition.nodeId);
+    final imeRange = docTextNodesToImeRanges[nodePath];
     if (imeRange == null) {
-      throw Exception("No such document position in the IME content: $docPosition");
+      print("Available node paths in mapping:");
+      for (final entry in docTextNodesToImeRanges.entries) {
+        print(" - ${entry.key}");
+      }
+      throw Exception("No such node path in the IME content: $nodePath");
     }
 
     final nodePosition = docPosition.nodePosition;

super_editor/test/super_editor/infrastructure/document_test.dart

@@ -3,6 +3,18 @@ import 'package:super_editor/super_editor.dart';
 
 void main() {
   group("Document", () {
+    group("node paths >", () {
+      test("equality", () {
+        expect(NodePath.forNode("1"), equals(NodePath.forNode("1")));
+        expect(NodePath.forNode("1"), isNot(equals(NodePath.forNode("2"))));
+
+        final map = <NodePath, String>{
+          NodePath.forNode("1"): "Hello",
+        };
+        expect(map[NodePath.forNode("1")], "Hello");
+      });
+    });
+
     group("nodes", () {
       group("equality", () {
         test("equivalent TextNodes are equal", () {

super_editor/test/super_editor/super_editor_embedded_documents_test.dart

@@ -11,6 +11,11 @@ import 'supereditor_test_tools.dart';
 void main() {
   group("SuperEditor embedded documents >", () {
     testWidgetsOnAllPlatforms("displays embedded documents", (tester) async {
+      tester.view.physicalSize = const Size(600, 600);
+      addTearDown(() {
+        tester.view.resetPhysicalSize();
+      });
+
       await tester
           .createDocument()
           .withCustomContent(MutableDocument(nodes: [