Sends test result messages over to extension host. Fixes regression.

src/vs/workbench/api/browser/mainThreadTesting.ts

@@ -45,7 +45,7 @@ export class MainThreadTesting extends Disposable implements MainThreadTestingSh
 
 		this._register(resultService.onResultsChanged(evt => {
 			const results = 'completed' in evt ? evt.completed : ('inserted' in evt ? evt.inserted : undefined);
-			const serialized = results?.toJSON();
+			const serialized = results?.toJSONWithMessages();
 			if (serialized) {
 				this.proxy.$publishTestResults([serialized]);
 			}

src/vs/workbench/contrib/testing/common/testResult.ts

@@ -86,6 +86,11 @@ export interface ITestResult {
 	 * in the workspace.
 	 */
 	toJSON(): ISerializedTestResults | undefined;
+
+	/**
+	 * Serializes the test result, includes messages. Used to send the test states to the extension host.
+	 */
+	toJSONWithMessages(): ISerializedTestResults | undefined;
 }
 
 export const resultItemParents = function* (results: ITestResult, item: TestResultItem) {
@@ -501,6 +506,10 @@ export class LiveTestResult implements ITestResult {
 		return this.completedAt && this.persist ? this.doSerialize.value : undefined;
 	}
 
+	public toJSONWithMessages(): ISerializedTestResults | undefined {
+		return this.completedAt && this.persist ? this.doSerializeWithMessages.value : undefined;
+	}
+
 	/**
 	 * Updates all tests in the collection to the given state.
 	 */
@@ -585,6 +594,15 @@ export class LiveTestResult implements ITestResult {
 		request: this.request,
 		items: [...this.testById.values()].map(TestResultItem.serializeWithoutMessages),
 	}));
+
+	private readonly doSerializeWithMessages = new Lazy((): ISerializedTestResults => ({
+		id: this.id,
+		completedAt: this.completedAt!,
+		tasks: this.tasks.map(t => ({ id: t.id, name: t.name })),
+		name: this.name,
+		request: this.request,
+		items: [...this.testById.values()].map(TestResultItem.serialize),
+	}));
 }
 
 /**
@@ -682,4 +700,11 @@ export class HydratedTestResult implements ITestResult {
 	public toJSON(): ISerializedTestResults | undefined {
 		return this.persist ? this.serialized : undefined;
 	}
+
+	/**
+	 * @inheritdoc
+	 */
+	public toJSONWithMessages(): ISerializedTestResults | undefined {
+		return this.toJSON();
+	}
 }