Add tests for inconsistent language markers in part files.

Change-Id: Ife3f8145d146b3f406c1fdcaf77d91efda7e79d1
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/154462
Reviewed-by: Johnni Winther <[email protected]>
Reviewed-by: Brian Wilkerson <[email protected]>
Commit-Queue: Lasse R.H. Nielsen <[email protected]>

Author: lrhn

.dart_tool/package_config.json

@@ -353,6 +353,12 @@
       "packageUri": "lib/",
       "languageVersion": "2.2"
     },
+    {
+      "name": "language_versioning_2.7_test",
+      "rootUri": "../pkg/language_versioning_2.7_test",
+      "packageUri": "lib/",
+      "languageVersion": "2.7"
+    },
     {
       "name": "linter",
       "rootUri": "../third_party/pkg/linter",

pkg/language_versioning_2.7_test/pubspec.yaml

@@ -0,0 +1,14 @@
+name: language_versioning_2.7_test
+version: 1.0.0
+
+description: >
+  Tests of language versioning.
+  Stored as a package in order to have its own package configuration
+  and default language version
+
+# This package is not intended for consumption on pub.dev. DO NOT publish.
+publish_to: none
+
+environment:
+  sdk: '>=2.7.0 <3.0.0'
+

pkg/language_versioning_2.7_test/test/lib_ex2.7_test.dart

@@ -0,0 +1,26 @@
+// Copyright (c) 2020, 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.
+
+// Explicit version.
+// @dart=2.7
+
+part "src/part_of_ex2.7_v_ex2.7.dart";
+
+// Specification requires the part file to have
+// the same explicit langauge version marker
+// as the including library,
+// not just the same languge version.
+part "src/part_of_ex2.7_v_im2.7.dart";
+//   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+// [analyzer] COMPILE_TIME_ERROR.INCONSISTENT_LANGUAGE_VERSION_OVERRIDE
+// [cfe] The language version override has to be the same in the library and its part(s).
+
+part "src/part_of_ex2.7_v_ex2.8.dart";
+//   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+// [analyzer] COMPILE_TIME_ERROR.INCONSISTENT_LANGUAGE_VERSION_OVERRIDE
+// [cfe] The language version override has to be the same in the library and its part(s).
+
+main() {
+  print(x27x27);
+}

pkg/language_versioning_2.7_test/test/lib_ex2.8_test.dart

@@ -0,0 +1,22 @@
+// Copyright (c) 2020, 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.
+
+// Explicit version.
+// @dart=2.8
+
+part "src/part_of_ex2.8_v_ex2.8.dart";
+
+part "src/part_of_ex2.8_v_ex2.7.dart";
+//   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+// [analyzer] COMPILE_TIME_ERROR.INCONSISTENT_LANGUAGE_VERSION_OVERRIDE
+// [cfe] The language version override has to be the same in the library and its part(s).
+
+part "src/part_of_ex2.8_v_im2.7.dart";
+//   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+// [analyzer] COMPILE_TIME_ERROR.INCONSISTENT_LANGUAGE_VERSION_OVERRIDE
+// [cfe] The language version override has to be the same in the library and its part(s).
+
+void main() {
+  print(x28x28);
+}

pkg/language_versioning_2.7_test/test/lib_im2.7_test.dart

@@ -0,0 +1,25 @@
+// Copyright (c) 2020, 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.
+
+// Implicit language version 2.7 from configuration.
+
+part "src/part_of_im2.7_v_im2.7.dart";
+
+// Specification requires the part fsrc/ile to have
+// the same explicit langauge version marker
+// as the including library,
+// not just the same languge version.
+part "src/part_of_im2.7_v_ex2.7.dart";
+//   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+// [analyzer] COMPILE_TIME_ERROR.INCONSISTENT_LANGUAGE_VERSION_OVERRIDE
+// [cfe] The language version override has to be the same in the library and its part(s).
+
+part "src/part_of_im2.7_v_ex2.8.dart";
+//   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+// [analyzer] COMPILE_TIME_ERROR.INCONSISTENT_LANGUAGE_VERSION_OVERRIDE
+// [cfe] The language version override has to be the same in the library and its part(s).
+
+void main() {
+  print(i27i27);
+}

pkg/language_versioning_2.7_test/test/src/part_of_ex2.7_v_ex2.7.dart

@@ -0,0 +1,9 @@
+// Copyright (c) 2020, 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.
+
+// @dart=2.7
+
+part of "../lib_ex2.7_test.dart";
+
+var x27x27 = 0;

pkg/language_versioning_2.7_test/test/src/part_of_ex2.7_v_ex2.8.dart

@@ -0,0 +1,9 @@
+// Copyright (c) 2020, 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.
+
+// @dart=2.8
+
+part of "../lib_ex2.7_test.dart";
+
+var v27x28 = 0;

pkg/language_versioning_2.7_test/test/src/part_of_ex2.7_v_im2.7.dart

@@ -0,0 +1,9 @@
+// Copyright (c) 2020, 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.
+
+// Implicit language version 2.7 from configuration.
+
+part of "../lib_ex2.7_test.dart";
+
+var x27i27 = 0;

pkg/language_versioning_2.7_test/test/src/part_of_ex2.8_v_ex2.7.dart

@@ -0,0 +1,9 @@
+// Copyright (c) 2020, 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.
+
+// @dart=2.7
+
+part of "../lib_ex2.8_test.dart";
+
+var x28x27 = 0;

pkg/language_versioning_2.7_test/test/src/part_of_ex2.8_v_ex2.8.dart

@@ -0,0 +1,9 @@
+// Copyright (c) 2020, 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.
+
+// @dart=2.8
+
+part of "../lib_ex2.8_test.dart";
+
+var x28x28 = 0;

pkg/language_versioning_2.7_test/test/src/part_of_ex2.8_v_im2.7.dart

@@ -0,0 +1,9 @@
+// Copyright (c) 2020, 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.
+
+// Implicit language version 2.7 from configuration.
+
+part of "../lib_ex2.8_test.dart";
+
+var x28i27 = 0;

pkg/language_versioning_2.7_test/test/src/part_of_im2.7_v_ex2.7.dart

@@ -0,0 +1,9 @@
+// Copyright (c) 2020, 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.
+
+// @dart=2.7
+
+part of "../lib_im2.7_test.dart";
+
+var i27x27 = 0;

pkg/language_versioning_2.7_test/test/src/part_of_im2.7_v_ex2.8.dart

@@ -0,0 +1,9 @@
+// Copyright (c) 2020, 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.
+
+// @dart=2.8
+
+part of "../lib_im2.7_test.dart";
+
+var i27x28 = 0;

pkg/language_versioning_2.7_test/test/src/part_of_im2.7_v_im2.7.dart

@@ -0,0 +1,9 @@
+// Copyright (c) 2020, 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.
+
+// Implicit language version 2.7 from configuration.
+
+part of "../lib_im2.7_test.dart";
+
+var i27i27 = 0;