#1260. Finalizer tests fixed and refactored
diff --git a/LanguageFeatures/FinalizationRegistry/ffi/Finalizer/attach_A01_t01.dart b/LanguageFeatures/FinalizationRegistry/ffi/Finalizer/attach_A01_t01.dart
index e2333e7..a9118c4 100644
--- a/LanguageFeatures/FinalizationRegistry/ffi/Finalizer/attach_A01_t01.dart
+++ b/LanguageFeatures/FinalizationRegistry/ffi/Finalizer/attach_A01_t01.dart
@@ -10,7 +10,7 @@
 /// Attaches this finalizer to [value].
 ///
 /// When [value] is longer accessible to the program, while still having an
-/// attachement to this finalizer, the [callback] of this finalizer may be
+/// attachment to this finalizer, the [callback] of this finalizer may be
 /// called with [finalizationToken] as argument.
 ///
 /// @description Checks that finalizer can be attached to the different objects
@@ -30,30 +30,31 @@
   cnt++;
 });
 
+void clean() {
+  returnedToken = null;
+}
+
 @pragma('vm:never-inline')
-void test() {
-  Object? obj = Object();
-  finalizer.attach(obj, "Just a string");
-  print(obj);
+void attachToFinalizer(Object value, dynamic finalizationToken) {
+  finalizer.attach(value, finalizationToken);
+  Expect.isNull(returnedToken);
 }
 
 main() async {
-  test();
+  attachToFinalizer(Object(), "Just a string");
   await triggerGcWithDelay();
   Expect.equals("Just a string", returnedToken);
+  clean();
 
-  Object? obj = A();
-  finalizer.attach(obj, 15);
-  print(obj);
-  obj = List.filled(100, 1);
+  attachToFinalizer(A(), 15);
   await triggerGcWithDelay();
   Expect.equals(15, returnedToken);
+  clean();
 
-  finalizer.attach(obj, []);
-  print(obj);
-  obj = A();
+  attachToFinalizer(A(), []);
   await triggerGcWithDelay();
   Expect.equals([], returnedToken);
+  clean();
 
   await triggerGcWithDelay();
   Expect.equals(3, cnt);
diff --git a/LanguageFeatures/FinalizationRegistry/ffi/Finalizer/attach_A01_t02.dart b/LanguageFeatures/FinalizationRegistry/ffi/Finalizer/attach_A01_t02.dart
index c67dd5c..38b7391 100644
--- a/LanguageFeatures/FinalizationRegistry/ffi/Finalizer/attach_A01_t02.dart
+++ b/LanguageFeatures/FinalizationRegistry/ffi/Finalizer/attach_A01_t02.dart
@@ -10,7 +10,7 @@
 /// Attaches this finalizer to [value].
 ///
 /// When [value] is longer accessible to the program, while still having an
-/// attachement to this finalizer, the [callback] of this finalizer may be
+/// attachment to this finalizer, the [callback] of this finalizer may be
 /// called with [finalizationToken] as argument.
 ///
 /// @description Checks that finalizer with the given [detach] token can be
@@ -28,14 +28,14 @@
 });
 
 @pragma('vm:never-inline')
-void test(token) {
+void createAndAttach(token) {
   Object value = Object();
   finalizer.attach(value, "Finalization token", detach: token);
 }
 
 main() async {
   A detachToken = A();
-  test(detachToken);
+  createAndAttach(detachToken);
   finalizer.detach(detachToken);
   await triggerGcWithDelay();
   Expect.equals(0, cnt);
diff --git a/LanguageFeatures/FinalizationRegistry/ffi/Finalizer/attach_A01_t03.dart b/LanguageFeatures/FinalizationRegistry/ffi/Finalizer/attach_A01_t03.dart
index c558066..07f5539 100644
--- a/LanguageFeatures/FinalizationRegistry/ffi/Finalizer/attach_A01_t03.dart
+++ b/LanguageFeatures/FinalizationRegistry/ffi/Finalizer/attach_A01_t03.dart
@@ -10,7 +10,7 @@
 /// Attaches this finalizer to [value].
 ///
 /// When [value] is longer accessible to the program, while still having an
-/// attachement to this finalizer, the [callback] of this finalizer may be
+/// attachment to this finalizer, the [callback] of this finalizer may be
 /// called with [finalizationToken] as argument.
 ///
 /// @description Checks that generic finalizer can be attached to the different
@@ -25,36 +25,31 @@
 Object? returnedToken;
 int cnt = 0;
 
-
 final Finalizer<int> finalizer = Finalizer((token) {
   returnedToken = token;
   cnt++;
 });
 
 @pragma('vm:never-inline')
-void test(int token) {
-  Object value = Object();
-  finalizer.attach(value, token);
+void attachToFinalizer(Object value, int finalizationToken) {
+  finalizer.attach(value, finalizationToken);
 }
 
 main() async {
-  test(1);
+  attachToFinalizer(Object(), 1);
   await triggerGcWithDelay();
   Expect.equals(1, returnedToken);
 
-  Object? obj = A();
-  finalizer.attach(obj, 15);
-  print(obj);
-  obj = List.filled(100, 1);
+  attachToFinalizer(A(), 15);
+  await triggerGcWithDelay();
+  Expect.equals(15, returnedToken);
 
   await triggerGcWithDelay();
   Expect.equals(15, returnedToken);
 
-  finalizer.attach(obj, 14);
-  print(obj);
-  obj = A();
+  attachToFinalizer(A(), 14);
   await triggerGcWithDelay();
-  Expect.equals([], returnedToken);
+  Expect.equals(14, returnedToken);
   Expect.equals(3, cnt);
 
   await triggerGcWithDelay();
diff --git a/LanguageFeatures/FinalizationRegistry/no_ffi/Finalizer/NoSuchMethod_A01_t01.dart b/LanguageFeatures/FinalizationRegistry/no_ffi/Finalizer/noSuchMethod_A01_t01.dart
similarity index 92%
rename from LanguageFeatures/FinalizationRegistry/no_ffi/Finalizer/NoSuchMethod_A01_t01.dart
rename to LanguageFeatures/FinalizationRegistry/no_ffi/Finalizer/noSuchMethod_A01_t01.dart
index 83e56fa..1a8b483 100644
--- a/LanguageFeatures/FinalizationRegistry/no_ffi/Finalizer/NoSuchMethod_A01_t01.dart
+++ b/LanguageFeatures/FinalizationRegistry/no_ffi/Finalizer/noSuchMethod_A01_t01.dart
@@ -7,7 +7,7 @@
 //        Invocation invocation
 //     )
 /// Invoked when a non-existent method or property is accessed.
-/// @description Checks that [NoSuchMethodError] is thrown if non-existing
+/// @description Checks that [noSuchMethodError] is thrown if non-existing
 /// method or property is accessed.
 /// @author iarkh@unipro.ru