[conductor] Roll engine->flutter whenever version is out of date (#121502)

[conductor] Roll engine whenever version is out of date

dev/conductor/core/lib/src/next.dart

@@ -160,20 +160,6 @@ class NextContext extends Context {
         }
         break;
       case pb.ReleasePhase.APPLY_FRAMEWORK_CHERRYPICKS:
-        if (state.engine.cherrypicks.isEmpty && state.engine.dartRevision.isEmpty) {
-          stdio.printStatus(
-              'This release has no engine cherrypicks, and thus the engine.version file\n'
-              'in the framework does not need to be updated.',
-          );
-
-          if (state.framework.cherrypicks.isEmpty) {
-            stdio.printStatus(
-                'This release also has no framework cherrypicks. Therefore, a framework\n'
-                'pull request is not required.',
-            );
-            break;
-          }
-        }
         final Remote engineUpstreamRemote = Remote(
             name: RemoteName.upstream,
             url: state.engine.upstream.url,

dev/conductor/core/test/next_test.dart

@@ -425,8 +425,60 @@ void main() {
         engineRevisionFile.writeAsStringSync(oldEngineVersion, flush: true);
       });
 
-      test('with no dart, engine or framework cherrypicks, no user input, no PR needed', () async {
-        state = pb.ConductorState(
+      test('with no dart, engine or framework cherrypicks, updates engine revision if version mismatch', () async {
+        stdio.stdin.add('n');
+          processManager.addCommands(<FakeCommand>[
+          const FakeCommand(command: <String>['git', 'fetch', 'upstream']),
+          // we want merged upstream commit, not local working commit
+          const FakeCommand(command: <String>['git', 'checkout', 'upstream/$candidateBranch']),
+          const FakeCommand(
+            command: <String>['git', 'rev-parse', 'HEAD'],
+            stdout: revision1,
+          ),
+          const FakeCommand(command: <String>['git', 'fetch', 'upstream']),
+          FakeCommand(
+            command: const <String>['git', 'checkout', workingBranch],
+            onRun: () {
+              final File file = fileSystem.file('$checkoutsParentDirectory/framework/.ci.yaml')
+                  ..createSync();
+              _initializeCiYamlFile(file);
+            },
+          ),
+          const FakeCommand(
+            command: <String>['git', 'status', '--porcelain'],
+            stdout: 'MM bin/internal/release-candidate-branch.version',
+          ),
+          const FakeCommand(command: <String>['git', 'add', '--all']),
+          const FakeCommand(command: <String>[
+            'git',
+            'commit',
+            '--message',
+            'Create candidate branch version $candidateBranch for $releaseChannel',
+          ]),
+          const FakeCommand(
+            command: <String>['git', 'rev-parse', 'HEAD'],
+            stdout: revision3,
+          ),
+          const FakeCommand(
+            command: <String>['git', 'status', '--porcelain'],
+            stdout: 'MM bin/internal/engine.version',
+          ),
+          const FakeCommand(command: <String>['git', 'add', '--all']),
+          const FakeCommand(command: <String>[
+            'git',
+            'commit',
+            '--message',
+            'Update Engine revision to $revision1 for $releaseChannel release $releaseVersion',
+          ]),
+          const FakeCommand(
+            command: <String>['git', 'rev-parse', 'HEAD'],
+            stdout: revision4,
+          ),
+        ]);
+        final pb.ConductorState state = pb.ConductorState(
+          releaseChannel: releaseChannel,
+          releaseVersion: releaseVersion,
+          currentPhase: ReleasePhase.APPLY_FRAMEWORK_CHERRYPICKS,
           framework: pb.Repository(
             candidateBranch: candidateBranch,
             checkoutPath: frameworkCheckoutPath,
@@ -438,16 +490,14 @@ void main() {
             candidateBranch: candidateBranch,
             checkoutPath: engineCheckoutPath,
             upstream: pb.Remote(name: 'upstream', url: engineUpstreamRemoteUrl),
+            currentGitHead: revision1,
           ),
-          currentPhase: ReleasePhase.APPLY_FRAMEWORK_CHERRYPICKS,
         );
-
         writeStateToFile(
           fileSystem.file(stateFile),
           state,
           <String>[],
         );
-
         final Checkouts checkouts = Checkouts(
           fileSystem: fileSystem,
           parentDirectory: fileSystem.directory(checkoutsParentDirectory)..createSync(recursive: true),
@@ -456,23 +506,16 @@ void main() {
           stdio: stdio,
         );
         final CommandRunner<void> runner = createRunner(checkouts: checkouts);
-
         await runner.run(<String>[
           'next',
           '--$kStateOption',
           stateFile,
         ]);
 
-        final pb.ConductorState finalState = readStateFromFile(
-          fileSystem.file(stateFile),
-        );
-
-        expect(finalState.currentPhase, ReleasePhase.PUBLISH_VERSION);
-        expect(stdio.error, isEmpty);
-        expect(
-          stdio.stdout,
-          contains('pull request is not required'),
-        );
+        expect(processManager, hasNoRemainingExpectations);
+        expect(stdio.stdout, contains('release-candidate-branch.version containing $candidateBranch'));
+        expect(stdio.stdout, contains('Updating engine revision from $oldEngineVersion to $revision1'));
+        expect(stdio.stdout, contains('Are you ready to push your framework branch'));
       });
 
       test('with no engine cherrypicks but a dart revision update, updates engine revision', () async {