Add support for test_with_coverage (#400)

Update minimum tested SDK to 2.17.5

Author: kevmoo

.github/workflows/dart.yml

@@ -2,3 +2,6 @@
 .packages
 .dart_tool/
 pubspec.lock
+
+# default directory for pkg:coverage
+coverage/

.gitignore

@@ -1,5 +1,9 @@
+
 ## 6.4.0-dev
 
+- Added support for `test_with_coverage`.
+  Uses `package:coverage` and [Coveralls](https://coveralls.io) to track test
+  code coverage.
 - Added `--verbose` flag. Helps when debugging failures.
 
 ## 6.3.0

mono_repo/CHANGELOG.md

@@ -1,5 +1,10 @@
 Manage multiple [Dart packages] within a single repository.
 
+[![pub package](https://img.shields.io/pub/v/mono_repo.svg)](https://pub.dev/packages/mono_repo)
+[![package publisher](https://img.shields.io/pub/publisher/mono_repo.svg)](https://pub.dev/packages/mono_repo/publisher)
+[![Dart CI](https://github.com/google/mono_repo.dart/actions/workflows/dart.yml/badge.svg)](https://github.com/google/mono_repo.dart/actions/workflows/dart.yml)
+[![Coverage Status](https://coveralls.io/repos/github/google/mono_repo.dart/badge.svg?branch=master)](https://coveralls.io/github/google/mono_repo.dart?branch=master)
+
 ## Installation
 
 ```console

mono_repo/README.md

@@ -1,3 +1,4 @@
+import 'job.dart';
 import 'step.dart';
 
 enum ActionInfo implements Comparable<ActionInfo> {
@@ -16,28 +17,65 @@ enum ActionInfo implements Comparable<ActionInfo> {
   setupFlutter(
     repo: 'subosito/flutter-action',
     version: '2fb73e25c9488eb544b9b14b2ce00c4c2baf789e', // v2.4.0
+  ),
+
+  /// See https://github.com/marketplace/actions/coveralls-github-action
+  coveralls(
+    repo: 'coverallsapp/github-action',
+    version: 'master',
+    completionJobFactory: _coverageCompletionJob,
   );
 
   const ActionInfo({
     required this.repo,
     required this.version,
+    this.completionJobFactory,
   });
 
   final String repo;
   final String version;
+  final Job Function()? completionJobFactory;
 
   Step usage({
     required String name,
     String? id,
     Map<String, dynamic>? withContent,
-  }) =>
-      Step.uses(
-        uses: '$repo@$version',
-        id: id,
-        name: name,
-        withContent: withContent,
-      );
+  }) {
+    final step = Step.uses(
+      uses: '$repo@$version',
+      id: id,
+      name: name,
+      withContent: withContent,
+    );
+    // store away the action info for later use.
+    _actionInfoExpando[step] = this;
+    return step;
+  }
 
   @override
   int compareTo(ActionInfo other) => index.compareTo(other.index);
 }
+
+Job _coverageCompletionJob() => Job(
+      name: 'Mark Coveralls job finished',
+      runsOn: 'ubuntu-latest',
+      steps: [
+        ActionInfo.coveralls.usage(
+          name: 'Mark Coveralls job finished',
+          withContent: {
+            // https://docs.github.com/en/actions/security-guides/automatic-token-authentication#using-the-github_token-in-a-workflow
+            'github-token': r'${{ secrets.GITHUB_TOKEN }}',
+            'parallel-finished': true
+          },
+        )
+      ],
+    );
+
+/// Allows finding [ActionInfo] for a corresponding [Step].
+final _actionInfoExpando = Expando<ActionInfo>();
+
+extension StepExtension on Step {
+  bool get hasCompletionJob => actionInfo?.completionJobFactory != null;
+
+  ActionInfo? get actionInfo => _actionInfoExpando[this];
+}

mono_repo/lib/src/commands/github/action_info.dart

@@ -89,6 +89,9 @@ Map<String, String> generateGitHubYml(
     final allPrevStageJobs = <String>{};
     String? currStageName;
 
+    // TaskType : {jobs names}
+    final completionMap = SplayTreeMap<ActionInfo, Set<String>>();
+
     for (var job in allJobs) {
       if (job.stageName != currStageName) {
         currStageName = job.stageName;
@@ -99,11 +102,27 @@ Map<String, String> generateGitHubYml(
       if (allPrevStageJobs.isNotEmpty) {
         job.value.needs = allPrevStageJobs.toList();
       }
+
+      // process post-run logic
+      for (var step in job.value.steps) {
+        if (step.hasCompletionJob) {
+          completionMap
+              .putIfAbsent(step.actionInfo!, SplayTreeSet<String>.new)
+              .add(job.id);
+        }
+      }
     }
 
     final jobList =
         Map.fromEntries(allJobs.map((e) => MapEntry(e.id, e.value)));
 
+    for (var completion in completionMap.entries) {
+      final job = completion.key.completionJobFactory!()
+        ..needs = completion.value.toList();
+
+      jobList['job_${jobList.length + 1}'] = job;
+    }
+
     output[fileName] = '''
 $createdWith
 ${toYaml(rootConfig.monoConfig.github.generate(workflowName))}

mono_repo/lib/src/commands/github/github_yaml.dart

@@ -20,6 +20,7 @@ class Job implements YamlLike {
   final String? runsOn;
   @JsonKey(name: 'if')
   String? ifContent;
+  @JsonKey(required: true)
   final List<Step> steps;
   List<String>? needs;
 
@@ -29,7 +30,7 @@ class Job implements YamlLike {
     required this.steps,
   });
 
-  factory Job.fromJson(Map<String, dynamic> json) => _$JobFromJson(json);
+  factory Job.fromJson(Map json) => _$JobFromJson(json);
 
   @override
   Map<String, dynamic> toJson() => _$JobToJson(this);

mono_repo/lib/src/commands/github/job.dart

@@ -23,11 +23,11 @@ class Step implements YamlLike {
   @JsonKey(name: 'working-directory')
   final String? workingDirectory;
 
-  final Map<String, String>? env;
+  final Map? env;
 
   final String? uses;
   @JsonKey(name: 'with')
-  final Map<String, dynamic>? withContent;
+  final Map? withContent;
 
   Step._({
     this.id,
@@ -84,7 +84,7 @@ class Step implements YamlLike {
         env = null,
         workingDirectory = null;
 
-  factory Step.fromJson(Map<String, dynamic> json) => _$StepFromJson(json);
+  factory Step.fromJson(Map json) => _$StepFromJson(json);
 
   @override
   Map<String, dynamic> toJson() => _$StepToJson(this);