Update tests that have the current version number hardcoded

Some package configuration tests have the current version hardcoded
in local package_config.json files. Update these from 2.9 to 2.10.

Change-Id: I77bf63c0e5dfa73aa8a86fb1b4e8a404e8cfaa7f
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/155441
Reviewed-by: Martin Kustermann <kustermann@google.com>

Author: whesse

pkg/analyzer/test/src/dart/resolution/language_version_test.dart

@@ -131,10 +131,10 @@ var x = 0;
     assertErrorsInList(result.errors, []);
     assertType(findElement.topVar('x').type, 'int*');
 
-    // Upgrade the language version to `2.9`, so enabled Null Safety.
+    // Upgrade the language version to `2.10`, so enabled Null Safety.
     driver.changeFile(path);
     await _resolveFile(path, r'''
-// @dart = 2.9
+// @dart = 2.10
 var x = 0;
 ''');
     assertType(findElement.topVar('x').type, 'int');
@@ -162,10 +162,10 @@ var x = 0;
 ''');
     assertType(findElement.topVar('x').type, 'int*');
 
-    // Upgrade the language version to `2.9`, so enabled Null Safety.
+    // Upgrade the language version to `2.10`, so enabled Null Safety.
     _changeTestFile();
     await assertNoErrorsInCode('''
-// @dart = 2.9
+// @dart = 2.10
 var x = 0;
 ''');
     assertType(findElement.topVar('x').type, 'int');

pkg/analyzer/test/src/diagnostics/invalid_language_override_greater_test.dart

@@ -40,12 +40,12 @@ class A {}
   test_greaterThanPackage() async {
     _configureTestPackageLanguageVersion('2.5');
     await assertNoErrorsInCode(r'''
-// @dart = 2.9
+// @dart = 2.10
 int? a;
 ''');
     _assertUnitLanguageVersion(
       package: Version.parse('2.5.0'),
-      override: Version.parse('2.9.0'),
+      override: Version.parse('2.10.0'),
     );
   }
 

pkg/analyzer/test/src/diagnostics/invalid_language_override_test.dart

@@ -24,9 +24,9 @@ int i = 0;
     ]);
   }
 
-  test_correct_2_10() async {
+  test_correct_2_19() async {
     await assertErrorsInCode(r'''
-// @dart = 2.10
+// @dart = 2.19
 int i = 0;
 ''', [
       error(HintCode.INVALID_LANGUAGE_VERSION_OVERRIDE_GREATER, 0, 15),

pkg/front_end/testcases/nnbd_mixed/issue42387/foundation_basic_types_lib.dart

@@ -2,6 +2,6 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-// @dart = 2.9
+// @dart = 2.10
 
 typedef Future<Null> AsyncCallback();

pkg/front_end/testcases/nnbd_mixed/issue42387/foundation_binding_lib.dart

@@ -2,7 +2,7 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-// @dart = 2.9
+// @dart = 2.10
 
 import 'foundation_basic_types_lib.dart';
 

pkg/front_end/testcases/nnbd_mixed/issue42660_lib.dart

@@ -2,7 +2,7 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-// @dart=2.9
+// @dart=2.10
 
 extension E on int {
   String m() => 'm';

pkg/vm/testcases/transformations/type_flow/transformer/lists_nnbd.dart

@@ -3,7 +3,7 @@
 // BSD-style license that can be found in the LICENSE file.
 
 // This test requires non-nullable experiment.
-// @dart = 2.9
+// @dart = 2.10
 
 nonConstant() => int.parse('1') == 1;
 

pkg/vm/testcases/transformations/type_flow/transformer/null_check_elimination_nnbd.dart

@@ -5,7 +5,7 @@
 // Tests elimination of null checks.
 // This test requires non-nullable experiment.
 
-// @dart = 2.9
+// @dart = 2.10
 
 class A {
   String? nonNullable;

pkg/vm/testcases/transformations/type_flow/transformer/regress_41452_nnbd_strong.dart

@@ -6,7 +6,7 @@
 // Tests handling of null initializer of covariant field.
 // This test requires non-nullable experiment and NNBD strong mode.
 
-// @dart = 2.9
+// @dart = 2.10
 
 class _SplayTreeNode<Node extends _SplayTreeNode<Node>> {
   Node? left;

pkg/vm/testcases/transformations/type_flow/transformer/type_cast_elimination_nnbd.dart

@@ -5,7 +5,7 @@
 // Tests elimination of type casts.
 // This test requires non-nullable experiment.
 
-// @dart = 2.9
+// @dart = 2.10
 
 class A<T> {}