[gardening] Fix env_test/has_mirror_support.

Fix the test so it reports that mirrors are not supported in aot configuration.

Fixes https://github.com/dart-lang/sdk/issues/48125

Change-Id: I07fceebf8cbee8048988c8bd5287c8aec1bb8f0e
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/227582
Reviewed-by: Lasse Nielsen <lrn@google.com>
Reviewed-by: Sigmund Cherem <sigmund@google.com>
Commit-Queue: Alexander Aprelev <aam@google.com>

pkg/expect/lib/config.dart

@@ -0,0 +1,33 @@
+// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// 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.
+
+/// Access to the runner configuration this test is running in.
+///
+/// Provides queries against and properties of the current configuration
+/// that a test is being compiled and executed in.
+///
+/// This library is separate from `expect.dart` because it uses
+/// `fromEnvironment` constants that cannot be precompiled,
+/// and we precompile `expect.dart`.
+
+library expect_config;
+
+import 'package:smith/smith.dart';
+
+final Configuration _configuration = Configuration.parse(
+    const String.fromEnvironment("test_runner.configuration"),
+    <String, dynamic>{});
+
+bool get isDart2jsConfiguration {
+  return _configuration.compiler == Compiler.dart2js;
+}
+
+bool get isDdcConfiguration {
+  return _configuration.compiler == Compiler.dartdevk ||
+      _configuration.compiler == Compiler.dartdevc;
+}
+
+bool get isVmAotConfiguration {
+  return _configuration.compiler == Compiler.dartkp;
+}

pkg/expect/pubspec.yaml

@@ -13,7 +13,10 @@ environment:
 
 dependencies:
   meta: any
+  smith: any
 
 dependency_overrides:
  meta:
   path: ../meta
+ smith:
+  path: ../smith

pkg/modular_test/lib/src/loader.dart

@@ -252,6 +252,7 @@ _detectCyclesAndRemoveUnreachable(Map<String, Module> modules, Module main) {
 /// Default entries for a .packages file with paths relative to the SDK root.
 List<int> _defaultPackagesInput = utf8.encode('''
 expect:pkg/expect/lib
+smith:pkg/smith/lib
 async_helper:pkg/async_helper/lib
 meta:pkg/meta/lib
 collection:third_party/pkg/collection/lib
@@ -264,7 +265,8 @@ collection:third_party/pkg/collection/lib
 // import graph, or adding tests that validate this is always up to date.
 String _defaultPackagesSpec = '''
 dependencies:
-  expect: meta
+  expect: [meta, smith]
+  smith: []
   meta: []
   async_helper: []
   collection: []

pkg/modular_test/test/loader/default_package_dependency_error/expectation.txt

@@ -4,7 +4,8 @@ expect
   is package? yes
   is shared?  yes
   is sdk?  no
-  dependencies: meta, sdk
+  dependencies: meta, smith, sdk
+  lib/config.dart
   lib/expect.dart
   lib/minitest.dart
 
@@ -31,3 +32,13 @@ sdk
   is sdk?  yes
   (no dependencies)
   (sdk sources omitted)
+
+smith
+  is package? yes
+  is shared?  yes
+  is sdk?  no
+  dependencies: sdk
+  lib/builder.dart
+  lib/configuration.dart
+  lib/smith.dart
+  lib/test_matrix.dart

pkg/modular_test/test/loader/valid_packages/expectation.txt

@@ -4,7 +4,8 @@ expect
   is package? yes
   is shared?  yes
   is sdk?  no
-  dependencies: meta, sdk
+  dependencies: meta, smith, sdk
+  lib/config.dart
   lib/expect.dart
   lib/minitest.dart
 
@@ -40,3 +41,13 @@ sdk
   is sdk?  yes
   (no dependencies)
   (sdk sources omitted)
+
+smith
+  is package? yes
+  is shared?  yes
+  is sdk?  no
+  dependencies: sdk
+  lib/builder.dart
+  lib/configuration.dart
+  lib/smith.dart
+  lib/test_matrix.dart

pkg/test_runner/lib/src/options.dart

@@ -778,7 +778,10 @@ has been specified on the command line.''',
               data['test_server_cross_origin_port'] as int,
           testDriverErrorPort: data["test_driver_error_port"] as int,
           localIP: data["local_ip"] as String,
-          sharedOptions: sharedOptions,
+          sharedOptions: <String>[
+            ...sharedOptions,
+            "-Dtest_runner.configuration=${innerConfiguration.name}"
+          ],
           packages: data["packages"] as String,
           serviceResponseSizesDirectory:
               data['service_response_sizes_directory'] as String,

tests/language/library/env_test.dart

@@ -3,6 +3,7 @@
 // BSD-style license that can be found in the LICENSE file.
 
 import 'package:expect/expect.dart';
+import 'package:expect/config.dart';
 
 main() {
   const NOT_PRESENT = false;
@@ -61,18 +62,12 @@ main() {
         const bool.fromEnvironment("dart.library.io", defaultValue: false));
   }
 
-  bool? hasMirrorSupport;
-  hasMirrorSupport = true; //# has_mirror_support: ok
-  hasMirrorSupport = false; //# has_no_mirror_support: ok
-
-  if (hasMirrorSupport != null) {
-    bool expectedResult = hasMirrorSupport ? true : NOT_PRESENT;
-
-    Expect.equals(
-        expectedResult,
-        const bool.fromEnvironment("dart.library.mirrors",
-            defaultValue: NOT_PRESENT));
-  }
+  bool hasMirrorSupport = !isDart2jsConfiguration &&
+      !isDdcConfiguration && !isVmAotConfiguration;
+  Expect.equals(
+      hasMirrorSupport,
+      const bool.fromEnvironment("dart.library.mirrors",
+          defaultValue: NOT_PRESENT));
 
   Expect.equals(
       NOT_PRESENT,

tests/language_2/library/env_test.dart

@@ -5,6 +5,7 @@
 // @dart = 2.9
 
 import 'package:expect/expect.dart';
+import 'package:expect/config.dart';
 
 main() {
   const NOT_PRESENT = false;
@@ -63,18 +64,12 @@ main() {
         const bool.fromEnvironment("dart.library.io", defaultValue: false));
   }
 
-  bool hasMirrorSupport;
-  hasMirrorSupport = true; //# has_mirror_support: ok
-  hasMirrorSupport = false; //# has_no_mirror_support: ok
-
-  if (hasMirrorSupport != null) {
-    bool expectedResult = hasMirrorSupport ? true : NOT_PRESENT;
-
-    Expect.equals(
-        expectedResult,
-        const bool.fromEnvironment("dart.library.mirrors",
-            defaultValue: NOT_PRESENT));
-  }
+  bool hasMirrorSupport = !isDart2jsConfiguration &&
+      !isDdcConfiguration && !isVmAotConfiguration;
+  Expect.equals(
+      hasMirrorSupport,
+      const bool.fromEnvironment("dart.library.mirrors",
+          defaultValue: NOT_PRESENT));
 
   Expect.equals(
       NOT_PRESENT,