Pass along web renderer into debugging options in the test command. (#143128)

We need to pass along the web renderer in the debugging options to make sure that the resident web runner sets up the targets correctly.

packages/flutter_tools/lib/src/commands/test.dart

@@ -21,6 +21,7 @@ import '../test/runner.dart';
 import '../test/test_time_recorder.dart';
 import '../test/test_wrapper.dart';
 import '../test/watcher.dart';
+import '../web/compile.dart';
 
 /// The name of the directory where Integration Tests are placed.
 ///
@@ -353,6 +354,10 @@ class TestCommand extends FlutterCommand with DeviceBasedDevelopmentArtifacts {
       );
     }
 
+    final String? webRendererString = stringArg('web-renderer');
+    final WebRendererMode webRenderer = (webRendererString != null)
+        ? WebRendererMode.values.byName(webRendererString)
+        : WebRendererMode.auto;
     final DebuggingOptions debuggingOptions = DebuggingOptions.enabled(
       buildInfo,
       startPaused: startPaused,
@@ -365,6 +370,7 @@ class TestCommand extends FlutterCommand with DeviceBasedDevelopmentArtifacts {
       usingCISystem: usingCISystem,
       enableImpeller: ImpellerStatus.fromBool(argResults!['enable-impeller'] as bool?),
       debugLogsDirectoryPath: debugLogsDirectoryPath,
+      webRenderer: webRenderer,
     );
 
     String? testAssetDirectory;

packages/flutter_tools/test/commands.shard/hermetic/test_test.dart

@@ -22,6 +22,7 @@ import 'package:flutter_tools/src/test/test_device.dart';
 import 'package:flutter_tools/src/test/test_time_recorder.dart';
 import 'package:flutter_tools/src/test/test_wrapper.dart';
 import 'package:flutter_tools/src/test/watcher.dart';
+import 'package:flutter_tools/src/web/compile.dart';
 import 'package:stream_channel/stream_channel.dart';
 import 'package:vm_service/vm_service.dart';
 
@@ -1057,6 +1058,24 @@ dev_dependencies:
       FileSystem: () => fs,
       ProcessManager: () => FakeProcessManager.any(),
     });
+
+    testUsingContext('Passes web renderer into debugging options', () async {
+      final FakeFlutterTestRunner testRunner = FakeFlutterTestRunner(0);
+
+      final TestCommand testCommand = TestCommand(testRunner: testRunner);
+      final CommandRunner<void> commandRunner = createTestCommandRunner(testCommand);
+
+      await commandRunner.run(const <String>[
+        'test',
+        '--no-pub',
+        '--platform=chrome',
+        '--web-renderer=canvaskit',
+      ]);
+      expect(testRunner.lastDebuggingOptionsValue.webRenderer, WebRendererMode.canvaskit);
+    }, overrides: <Type, Generator>{
+      FileSystem: () => fs,
+      ProcessManager: () => FakeProcessManager.any(),
+    });
   });
 }