Enable experiments for health

.github/workflows/health.yaml

@@ -88,6 +88,11 @@ on:
         default: false
         required: false
         type: boolean
+      experiments:
+        description: Which experiments should be enabled for Dart.
+        default: "\"\""
+        type: string
+        required: false
 
 jobs:
   version:
@@ -101,6 +106,7 @@ jobs:
       local_debug: ${{ inputs.local_debug }}
       use-flutter: ${{ inputs.use-flutter }}
       checkout_submodules: ${{ inputs.checkout_submodules }}
+
   changelog:
     if: ${{ contains(inputs.checks, 'changelog') }}
     uses: ./.github/workflows/health_base.yaml
@@ -138,6 +144,7 @@ jobs:
       local_debug: ${{ inputs.local_debug }}
       use-flutter: ${{ inputs.use-flutter }}
       checkout_submodules: ${{ inputs.checkout_submodules }}
+      experiments: ${{ inputs.experiments }}
 
   breaking:
     if: ${{ contains(inputs.checks, 'breaking') }}

.github/workflows/health_base.yaml

@@ -55,6 +55,11 @@ on:
         default: false
         required: false
         type: boolean
+      experiments:
+        description: Which experiments should be enabled for Dart.
+        default: "\"\""
+        type: string
+        required: false
 
 jobs:
   health:
@@ -119,7 +124,8 @@ jobs:
             --check ${{ inputs.check }} \
             ${{ fromJSON('{"true":"--coverage_web","false":""}')[inputs.coverage_web] }} \
             --fail_on ${{ inputs.fail_on }} \
-            --warn_on ${{ inputs.warn_on }}
+            --warn_on ${{ inputs.warn_on }} \
+            --experiments ${{ inputs.experiments }}
 
       - run: test -f current_repo/output/comment.md || echo $'The ${{ inputs.check }} workflow has encountered an exception and did not complete.' >> current_repo/output/comment.md
         if: ${{ '$action_state' == 1 }}

pkgs/firehose/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 0.5.3
+
+- Allow experiments to be enabled for Dart.
+
 ## 0.5.2
 
 - Also run health workflows on bot PRs.

pkgs/firehose/bin/health.dart

@@ -24,6 +24,10 @@ void main(List<String> arguments) async {
       allowed: checkTypes,
       help: 'Which checks should lead to workflow failure',
     )
+    ..addMultiOption(
+      'experiments',
+      help: 'Which experiments should be enabled for Dart',
+    )
     ..addFlag(
       'coverage_web',
       help: 'Whether to run web tests for coverage',
@@ -32,11 +36,20 @@ void main(List<String> arguments) async {
   var check = parsedArgs['check'] as String;
   var warnOn = parsedArgs['warn_on'] as List<String>;
   var failOn = parsedArgs['fail_on'] as List<String>;
+  var experiments = (parsedArgs['experiments'] as List<String>)
+      .where((name) => name.isNotEmpty)
+      .toList();
   var coverageWeb = parsedArgs['coverage_web'] as bool;
   if (warnOn.toSet().intersection(failOn.toSet()).isNotEmpty) {
     throw ArgumentError('The checks for which warnings are displayed and the '
         'checks which lead to failure must be disjoint.');
   }
-  await Health(Directory.current, check, warnOn, failOn, coverageWeb)
-      .healthCheck();
+  await Health(
+    Directory.current,
+    check,
+    warnOn,
+    failOn,
+    coverageWeb,
+    experiments,
+  ).healthCheck();
 }

pkgs/firehose/lib/src/health/coverage.dart

@@ -14,8 +14,9 @@ import 'lcov.dart';
 
 class Coverage {
   final bool coverageWeb;
+  final List<String> experiments;
 
-  Coverage(this.coverageWeb);
+  Coverage(this.coverageWeb, this.experiments);
 
   Future<CoverageResult> compareCoverages(GithubApi github) async {
     var files = await github.listFilesForPR();
@@ -93,14 +94,26 @@ class Coverage {
 Get coverage for ${package.name} by running coverage in ${package.directory.path}''');
         Process.runSync(
           'dart',
-          ['pub', 'get'],
+          [
+            if (experiments.isNotEmpty)
+              'enable-experiment=${experiments.join(',')}',
+            'pub',
+            'get'
+          ],
           workingDirectory: package.directory.path,
         );
         if (coverageWeb) {
           print('Get test coverage for web');
           var resultChrome = Process.runSync(
             'dart',
-            ['test', '-p', 'chrome', '--coverage=coverage'],
+            [
+              if (experiments.isNotEmpty)
+                'enable-experiment=${experiments.join(',')}',
+              'test',
+              '-p',
+              'chrome',
+              '--coverage=coverage'
+            ],
             workingDirectory: package.directory.path,
           );
           print(resultChrome.stdout);
@@ -109,7 +122,12 @@ Get coverage for ${package.name} by running coverage in ${package.directory.path
         print('Get test coverage for vm');
         var resultVm = Process.runSync(
           'dart',
-          ['test', '--coverage=coverage'],
+          [
+            if (experiments.isNotEmpty)
+              'enable-experiment=${experiments.join(',')}',
+            'test',
+            '--coverage=coverage'
+          ],
           workingDirectory: package.directory.path,
         );
         print(resultVm.stdout);

pkgs/firehose/lib/src/health/health.dart

@@ -50,13 +50,15 @@ class Health {
     this.warnOn,
     this.failOn,
     this.coverageweb,
+    this.experiments,
   );
   final github = GithubApi();
 
   final String check;
   final List<String> warnOn;
   final List<String> failOn;
   final bool coverageweb;
+  final List<String> experiments;
 
   Future<void> healthCheck() async {
     // Do basic validation of our expected env var.
@@ -259,24 +261,26 @@ Changes to files need to be [accounted for](https://github.com/dart-lang/ecosyst
   }
 
   Future<HealthCheckResult> doNotSubmitCheck() async {
+    final dns = 'DO_NOT${'_'}SUBMIT';
+
     final body = await github.pullrequestBody();
     final files = await github.listFilesForPR();
-    print('Checking for DO_NOT${'_'}SUBMIT strings: $files');
+    print('Checking for $dns strings: $files');
     final filesWithDNS = files
         .where((file) =>
             ![FileStatus.removed, FileStatus.unchanged].contains(file.status))
-        .where((file) => File(file.relativePath)
-            .readAsStringSync()
-            .contains('DO_NOT${'_'}SUBMIT'))
+        .where((file) => File(file.relativePath).existsSync())
+        .where(
+            (file) => File(file.relativePath).readAsStringSync().contains(dns))
         .toList();
-    print('Found files with DO_NOT_${'SUBMIT'}: $filesWithDNS');
+    print('Found files with $dns: $filesWithDNS');
 
-    final bodyContainsDNS = body.contains('DO_NOT${'_'}SUBMIT');
-    print('The body contains a DO_NOT${'_'}SUBMIT string: $bodyContainsDNS');
+    final bodyContainsDNS = body.contains(dns);
+    print('The body contains a $dns string: $bodyContainsDNS');
     final markdownResult = '''
-Body contains `DO_NOT${'_'}SUBMIT`: $bodyContainsDNS
+Body contains `$dns`: $bodyContainsDNS
 
-| Files with `DO_NOT_${'SUBMIT'}` |
+| Files with `$dns` |
 | :--- |
 ${filesWithDNS.map((e) => e.filename).map((e) => '|$e|').join('\n')}
 ''';
@@ -290,7 +294,8 @@ ${filesWithDNS.map((e) => e.filename).map((e) => '|$e|').join('\n')}
   }
 
   Future<HealthCheckResult> coverageCheck() async {
-    var coverage = await Coverage(coverageweb).compareCoverages(github);
+    var coverage =
+        await Coverage(coverageweb, experiments).compareCoverages(github);
 
     var markdownResult = '''
 | File | Coverage |

pkgs/firehose/pubspec.yaml

@@ -1,6 +1,6 @@
 name: firehose
 description: A tool to automate publishing of Pub packages from GitHub actions.
-version: 0.5.2
+version: 0.5.3
 repository: https://github.com/dart-lang/ecosystem/tree/main/pkgs/firehose
 
 environment:

pkgs/firehose/test/coverage_test.dart

@@ -43,7 +43,7 @@ void main() {
 }
 
 class FakeHealth extends Coverage {
-  FakeHealth() : super(true);
+  FakeHealth() : super(true, []);
 
   @override
   Map<String, double> getCoverage(Package? package) {