Macro. Issue 55931. Failing test for adding 'extends' and then new type.

Bug: https://github.com/dart-lang/sdk/issues/55931
Change-Id: Iaf7f147b1d710d55f70ecaa2d26a8c2f88fd4afe
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/371781
Commit-Queue: Konstantin Shcheglov <scheglov@google.com>
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>

pkg/analyzer/test/src/summary/macro/append.dart

@@ -182,10 +182,11 @@ Future<List<Object>> resolveIdentifiers(
   const DeclareType.named(this.name, this.code);
 
   @override
-  buildTypesForClass(clazz, builder) {
+  buildTypesForClass(clazz, builder) async {
+    var parts = await resolveIdentifiers(builder, code);
     builder.declareType(
       name,
-      DeclarationCode.fromString(code),
+      DeclarationCode.fromParts(parts),
     );
   }
 }

pkg/analyzer/test/src/summary/macro_test.dart

@@ -6153,6 +6153,62 @@ abstract class MacroElementsTest extends MacroElementsBaseTest {
   @override
   bool get retainDataForTesting => true;
 
+  @FailingTest(
+    issue: 'https://github.com/dart-lang/sdk/issues/55931',
+    reason: r'''
+Here we apply `SetExtendsType` first, so `augment class B` is first.
+Then we apply `DeclareType`, so `class C @113` is next.
+But the actual merged code has the different order.
+Note, that the code below has the _expected_ merged code.
+''',
+  )
+  test_addClass_extendsTypeOther() async {
+    var library = await buildLibrary(r'''
+import 'append.dart';
+
+class A {}
+
+@DeclareType('C', 'class C {}')
+@SetExtendsType('{{package:test/test.dart@A}}', [])
+class B {}
+''');
+
+    configuration
+      ..withConstructors = false
+      ..withMetadata = false;
+    checkElementText(library, r'''
+library
+  imports
+    package:test/append.dart
+  definingUnit
+    classes
+      class A @29
+      class B @125
+        augmentation: self::@augmentation::package:test/test.macro.dart::@classAugmentation::B
+        supertype: A
+        augmented
+  augmentationImports
+    package:test/test.macro.dart
+      macroGeneratedCode
+---
+augment library 'package:test/test.dart';
+
+import 'package:test/test.dart' as prefix0;
+
+augment class B extends prefix0.A {
+}
+class C {}
+---
+      imports
+        package:test/test.dart as prefix0 @78
+      definingUnit
+        classes
+          augment class B @94
+            augmentationTarget: self::@class::B
+          class C @113
+''');
+  }
+
   test_disable_declarationsPhase() async {
     var library = await buildLibrary(r'''
 // @dart = 3.2