Migrateheader_guard_check to package:test. (#54811)

Work towards flutter/flutter#133569.

I also augmented the `run_tests.py` script to support an incremental migration to `package:test`, PTAL.

testing/run_tests.py

@@ -23,12 +23,16 @@
 # Explicitly import the parts of sys that are needed. This is to avoid using
 # sys.stdout and sys.stderr directly. Instead, only the logger defined below
 # should be used for output.
-from sys import exit as sys_exit, platform as sys_platform
+from sys import exit as sys_exit, platform as sys_platform, path as sys_path
 import tempfile
 import time
 import typing
 import xvfb
 
+THIS_DIR = os.path.abspath(os.path.dirname(__file__))
+sys_path.insert(0, os.path.join(THIS_DIR, '..', 'third_party', 'pyyaml', 'lib'))
+import yaml  # pylint: disable=import-error, wrong-import-position
+
 SCRIPT_DIR = os.path.dirname(os.path.realpath(__file__))
 BUILDROOT_DIR = os.path.abspath(os.path.join(os.path.realpath(__file__), '..', '..', '..'))
 OUT_DIR = os.path.join(BUILDROOT_DIR, 'out')
@@ -65,8 +69,9 @@ def is_asan(build_dir):
   return False
 
 
-def run_cmd(
+def run_cmd( # pylint: disable=too-many-arguments
     cmd: typing.List[str],
+    cwd: str = None,
     forbidden_output: typing.List[str] = None,
     expect_failure: bool = False,
     env: typing.Dict[str, str] = None,
@@ -81,12 +86,13 @@ def run_cmd(
   command_string = ' '.join(cmd)
 
   print_divider('>')
-  logger.info('Running command "%s"', command_string)
+  logger.info('Running command "%s" in "%s"', command_string, cwd)
 
   start_time = time.time()
 
   process = subprocess.Popen(
       cmd,
+      cwd=cwd,
       stdout=subprocess.PIPE,
       stderr=subprocess.STDOUT,
       env=env,
@@ -905,14 +911,49 @@ def gather_dart_smoke_test(build_dir, test_filter):
 
 
 def gather_dart_package_tests(build_dir, package_path, extra_opts):
-  dart_tests = glob.glob('%s/test/*_test.dart' % package_path)
-  if not dart_tests:
-    raise Exception('No tests found for Dart package at %s' % package_path)
-  for dart_test_file in dart_tests:
-    opts = ['--disable-dart-dev', dart_test_file] + extra_opts
+  if uses_package_test_runner(package_path):
+    # Package that use package:test (dart test) do not support command-line arguments.
+    #
+    # The usual workaround is to use Platform.environment, but that would require changing
+    # the test execution a tiny bit. TODO(https://github.com/flutter/flutter/issues/133569).
+    #
+    # Until then, assert that no extra_opts are passed and explain the limitation.
+    assert not extra_opts, '%s uses package:test and cannot use CLI args' % package_path
+    # TODO(https://github.com/flutter/flutter/issues/154263): Restore `--disable-dart-dev`.
+    opts = ['test']
     yield EngineExecutableTask(
         build_dir, os.path.join('dart-sdk', 'bin', 'dart'), None, flags=opts, cwd=package_path
     )
+  else:
+    dart_tests = glob.glob('%s/test/*_test.dart' % package_path)
+    if not dart_tests:
+      raise Exception('No tests found for Dart package at %s' % package_path)
+    for dart_test_file in dart_tests:
+      opts = ['--disable-dart-dev', dart_test_file] + extra_opts
+      yield EngineExecutableTask(
+          build_dir, os.path.join('dart-sdk', 'bin', 'dart'), None, flags=opts, cwd=package_path
+      )
+
+
+# Returns whether the given package path should be tested with `dart test`.
+#
+# Inferred by a dependency on the `package:test` package in the pubspec.yaml.
+def uses_package_test_runner(package):
+  pubspec = os.path.join(package, 'pubspec.yaml')
+  if not os.path.exists(pubspec):
+    return False
+  with open(pubspec, 'r') as file:
+    # Check if either "dependencies" or "dev_dependencies" contains "test".
+    data = yaml.safe_load(file)
+    if data is None:
+      return False
+    deps = data.get('dependencies', {})
+    if 'test' in deps:
+      return True
+    dev_deps = data.get('dev_dependencies', {})
+    if 'test' in dev_deps:
+      return True
+  return False
 
 
 # Returns a list of Dart packages to test.

tools/header_guard_check/pubspec.yaml

@@ -21,8 +21,5 @@ dependencies:
   source_span: any
 
 dev_dependencies:
-  async_helper: any
-  expect: any
-  litetest: any
   process_fakes: any
-  smith: any
+  test: any

tools/header_guard_check/test/header_file_test.dart

@@ -1,18 +1,21 @@
 // Copyright 2013 The Flutter Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
+@TestOn('vm')
+library;
 
 import 'dart:io' as io;
 
 import 'package:header_guard_check/src/header_file.dart';
-import 'package:litetest/litetest.dart';
 import 'package:path/path.dart' as p;
 import 'package:source_span/source_span.dart';
+import 'package:test/test.dart';
 
-Future<int> main(List<String> args) async {
+Future<int> main() async {
   void withTestFile(String path, String contents, void Function(io.File) fn) {
     // Create a temporary file and delete it when we're done.
-    final io.Directory tempDir = io.Directory.systemTemp.createTempSync('header_guard_check_test');
+    final io.Directory tempDir =
+        io.Directory.systemTemp.createTempSync('header_guard_check_test');
     final io.File file = io.File(p.join(tempDir.path, path));
     file.writeAsStringSync(contents);
     try {
@@ -157,7 +160,8 @@ Future<int> main(List<String> args) async {
           guard: null,
           pragmaOnce: null,
         );
-        expect(headerFile.computeExpectedName(engineRoot: ''), endsWith('FOO_BAR_BAZ_H_'));
+        expect(headerFile.computeExpectedName(engineRoot: ''),
+            endsWith('FOO_BAR_BAZ_H_'));
       }
     });
 
@@ -240,14 +244,16 @@ Future<int> main(List<String> args) async {
       withTestFile('foo.h', input, (io.File file) {
         final HeaderFile headerFile = HeaderFile.parse(file.path);
         expect(headerFile.fix(engineRoot: p.dirname(file.path)), isTrue);
-        expect(file.readAsStringSync(), <String>[
-          '#ifndef FLUTTER_FOO_H_',
-          '#define FLUTTER_FOO_H_',
-          '',
-          '// ...',
-          '#endif  // FLUTTER_FOO_H_',
-          '',
-        ].join('\n'));
+        expect(
+            file.readAsStringSync(),
+            <String>[
+              '#ifndef FLUTTER_FOO_H_',
+              '#define FLUTTER_FOO_H_',
+              '',
+              '// ...',
+              '#endif  // FLUTTER_FOO_H_',
+              '',
+            ].join('\n'));
       });
     });
 
@@ -261,13 +267,15 @@ Future<int> main(List<String> args) async {
       withTestFile('foo.h', input, (io.File file) {
         final HeaderFile headerFile = HeaderFile.parse(file.path);
         expect(headerFile.fix(engineRoot: p.dirname(file.path)), isTrue);
-        expect(file.readAsStringSync(), <String>[
-          '#ifndef FLUTTER_FOO_H_',
-          '#define FLUTTER_FOO_H_',
-          '',
-          '#endif  // FLUTTER_FOO_H_',
-          '',
-        ].join('\n'));
+        expect(
+            file.readAsStringSync(),
+            <String>[
+              '#ifndef FLUTTER_FOO_H_',
+              '#define FLUTTER_FOO_H_',
+              '',
+              '#endif  // FLUTTER_FOO_H_',
+              '',
+            ].join('\n'));
       });
     });
 
@@ -287,27 +295,30 @@ Future<int> main(List<String> args) async {
       withTestFile('foo.h', input, (io.File file) {
         final HeaderFile headerFile = HeaderFile.parse(file.path);
         expect(headerFile.fix(engineRoot: p.dirname(file.path)), isTrue);
-        expect(file.readAsStringSync(), <String>[
-          '// 1.',
-          '// 2.',
-          '// 3.',
-          '',
-          '#ifndef FLUTTER_FOO_H_',
-          '#define FLUTTER_FOO_H_',
-          '',
-          "#import 'flutter/shell/platform/darwin/Flutter.h'",
-          '',
-          '@protocl Flutter',
-          '',
-          '@end',
-          '',
-          '#endif  // FLUTTER_FOO_H_',
-          '',
-        ].join('\n'));
+        expect(
+            file.readAsStringSync(),
+            <String>[
+              '// 1.',
+              '// 2.',
+              '// 3.',
+              '',
+              '#ifndef FLUTTER_FOO_H_',
+              '#define FLUTTER_FOO_H_',
+              '',
+              "#import 'flutter/shell/platform/darwin/Flutter.h'",
+              '',
+              '@protocl Flutter',
+              '',
+              '@end',
+              '',
+              '#endif  // FLUTTER_FOO_H_',
+              '',
+            ].join('\n'));
       });
     });
 
-    test('does not touch a file with an existing guard and another #define', () {
+    test('does not touch a file with an existing guard and another #define',
+        () {
       final String input = <String>[
         '// 1.',
         '// 2.',

tools/header_guard_check/test/header_guard_check_test.dart

@@ -1,15 +1,17 @@
 // Copyright 2013 The Flutter Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
+@TestOn('vm')
+library;
 
 import 'dart:io' as io;
 
 import 'package:engine_repo_tools/engine_repo_tools.dart';
 import 'package:header_guard_check/header_guard_check.dart';
-import 'package:litetest/litetest.dart';
 import 'package:path/path.dart' as p;
+import 'package:test/test.dart';
 
-Future<int> main(List<String> args) async {
+Future<int> main() async {
   void withTestRepository(String path, void Function(io.Directory) fn) {
     // Create a temporary directory and delete it when we're done.
     final io.Directory tempDir = io.Directory.systemTemp.createTempSync('header_guard_check_test');