Fix test and code metrics

Author: srujzs

dwds/lib/src/debugging/inspector.dart

@@ -115,6 +115,7 @@ class AppInspector implements AppInspectorInterface {
     await DartUri.initialize();
     DartUri.recordAbsoluteUris(libraries.map((lib) => lib.uri).nonNulls);
     DartUri.recordAbsoluteUris(scripts.map((script) => script.uri).nonNulls);
+    await getExtensionRpcs();
   }
 
   static IsolateRef _toIsolateRef(Isolate isolate) => IsolateRef(
@@ -787,7 +788,7 @@ class AppInspector implements AppInspectorInterface {
         s,
       );
     }
-    isolate.extensionRPCs = List<String>.from(extensionRpcs);
+    isolate.extensionRPCs = List<String>.of(extensionRpcs);
     return extensionRpcs;
   }
 

dwds/lib/src/services/chrome_proxy_service.dart

@@ -509,7 +509,7 @@ class ChromeProxyService implements VmServiceInterface {
         v is String ? v : jsonEncode(v),
       ),
     );
-    if ((await inspector.getExtensionRpcs()).contains(method) != true) {
+    if (!(await inspector.getExtensionRpcs()).contains(method)) {
       throw RPCError(
         method,
         RPCErrorKind.kMethodNotFound.code,

dwds/test/common/chrome_proxy_service_common.dart

@@ -298,6 +298,20 @@ void runTests({
           ),
         },
       );
+
+      test('not found', () async {
+        final serviceMethod = 'ext.test.missingServiceExtension';
+        expect(
+          service.callServiceExtension(serviceMethod),
+          throwsA(
+            predicate(
+              (dynamic error) =>
+                  error is RPCError &&
+                  error.code == RPCErrorKind.kMethodNotFound.code,
+            ),
+          ),
+        );
+      });
     });
 
     group('VMTimeline', () {