Make the quick fix for replacing final with var work for if/case

Change-Id: Id1fa1626aab3459aa1dfbf75d29b7d758ca8f59c
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/450000
Commit-Queue: Konstantin Shcheglov <[email protected]>
Reviewed-by: Samuel Rawlins <[email protected]>
Reviewed-by: Konstantin Shcheglov <[email protected]>

Author: fshcheglov

pkg/analysis_server/lib/src/services/correction/dart/replace_final_with_var.dart

@@ -30,6 +30,7 @@ class ReplaceFinalWithVar extends ResolvedCorrectionProducer {
       VariableDeclarationList node => (node.keyword, node.type),
       PatternVariableDeclaration node => (node.keyword, null),
       DeclaredIdentifier node => (node.keyword, node.type),
+      DeclaredVariablePattern node => (node.keyword, node.type),
       _ => (null, null),
     };
 

pkg/analysis_server/test/src/services/correction/fix/replace_final_with_var_test.dart

@@ -75,6 +75,23 @@ void f() {
     await assertNoFix();
   }
 
+  Future<void> test_if_case_pattern() async {
+    await resolveTestCode(r'''
+f() {
+  if (0 case final a){
+    print(a);
+  }
+}
+''');
+    await assertHasFix(r'''
+f() {
+  if (0 case var a){
+    print(a);
+  }
+}
+''');
+  }
+
   /// https://github.com/dart-lang/sdk/issues/51864
   Future<void> test_listPattern_assignment() async {
     await resolveTestCode('''