testing: add errored state

src/vs/vscode.d.ts

@@ -14093,6 +14093,17 @@ declare module 'vscode' {
 		 */
 		failed(test: TestItem, message: TestMessage | readonly TestMessage[], duration?: number): void;
 
+		/**
+		 * Indicates a test has errored. You should pass one or more
+		 * {@link TestMessage | TestMessages} to describe the failure. This differs
+		 * from the "failed" state in that it indicates a test that couldn't be
+		 * executed at all, from a compilation error for example.
+		 * @param test Test item to update.
+		 * @param messages Messages associated with the test failure.
+		 * @param duration How long the test took to execute, in milliseconds.
+		 */
+		errored(test: TestItem, message: TestMessage | readonly TestMessage[], duration?: number): void;
+
 		/**
 		 * Indicates a test has passed.
 		 * @param test Test item to update.

src/vs/workbench/api/common/extHostTesting.ts

@@ -355,6 +355,11 @@ class TestRunTracker extends Disposable {
 			started: guardTestMutation(test => {
 				this.proxy.$updateTestStateInRun(runId, taskId, TestId.fromExtHostTestItem(test, ctrlId).toString(), TestResultState.Running);
 			}),
+			errored: guardTestMutation((test, messages, duration) => {
+				this.proxy.$appendTestMessagesInRun(runId, taskId, TestId.fromExtHostTestItem(test, ctrlId).toString(),
+					messages instanceof Array ? messages.map(Convert.TestMessage.from) : [Convert.TestMessage.from(messages)]);
+				this.proxy.$updateTestStateInRun(runId, taskId, TestId.fromExtHostTestItem(test, ctrlId).toString(), TestResultState.Errored, duration);
+			}),
 			failed: guardTestMutation((test, messages, duration) => {
 				this.proxy.$appendTestMessagesInRun(runId, taskId, TestId.fromExtHostTestItem(test, ctrlId).toString(),
 					messages instanceof Array ? messages.map(Convert.TestMessage.from) : [Convert.TestMessage.from(messages)]);