Fix tests.

Author: gspencergoog

pkgs/dart_mcp_server/README.md

@@ -160,6 +160,6 @@ For more information, see the official VS Code documentation for
 | `run_tests` | Run tests | Run Dart or Flutter tests with an agent centric UX. ALWAYS use instead of `dart test` or `flutter test` shell commands. |
 | `set_widget_selection_mode` | Set Widget Selection Mode | Enables or disables widget selection mode in the active Flutter application. Requires "connect_dart_tooling_daemon" to be successfully called first. This is not necessary when using flutter driver, only use it when you want the user to select a widget. |
 | `signature_help` | Signature help | Get signature help for an API being used at a given cursor position in a file. |
-| `stop_app` |  | Kills a running Flutter process started by the launch_app tool. |
+| `stop_app` |  | Stops a running Flutter process started by the launch_app tool. |
 
 <!-- generated -->

pkgs/dart_mcp_server/test/tools/flutter_launcher_test.dart

@@ -318,7 +318,7 @@ void main() {
             'test-device',
           ],
           stderr: 'Something went wrong',
-          exitCode: Future.value(1),
+          exitCode: 1,
         ),
       );
       final serverAndClient = await createServerAndClient(
@@ -697,7 +697,7 @@ class Command {
   final List<String> command;
   final String? stdout;
   final String? stderr;
-  final Future<int>? exitCode;
+  final int? exitCode;
   final int pid;
 
   Command(
@@ -754,7 +754,9 @@ class MockProcessManager implements ProcessManager {
       stdout: Stream.value(utf8.encode(mockCommand.stdout ?? '')),
       stderr: Stream.value(utf8.encode(mockCommand.stderr ?? '')),
       pid: pid,
-      exitCodeFuture: mockCommand.exitCode,
+      exitCodeFuture: mockCommand.exitCode != null
+          ? Future(() => mockCommand.exitCode!)
+          : null,
     );
     runningProcesses[pid] = process;
     return process;
@@ -781,7 +783,7 @@ class MockProcessManager implements ProcessManager {
     final mockCommand = _findCommand(command);
     return ProcessResult(
       mockCommand.pid,
-      await (mockCommand.exitCode ?? Future.value(0)),
+      mockCommand.exitCode ?? 0,
       mockCommand.stdout ?? '',
       mockCommand.stderr ?? '',
     );
@@ -804,7 +806,7 @@ class MockProcessManager implements ProcessManager {
     final mockCommand = _findCommand(command);
     return ProcessResult(
       mockCommand.pid,
-      0,
+      mockCommand.exitCode ?? 0,
       mockCommand.stdout ?? '',
       mockCommand.stderr ?? '',
     );