Await focus of test explorer (#1289)

* Seeing if this resolves timing issues

Issue: #1260

Author: award999

test/integration-tests/testexplorer/TestExplorerIntegration.test.ts

@@ -15,7 +15,6 @@
 import * as assert from "assert";
 import * as vscode from "vscode";
 import { beforeEach, afterEach } from "mocha";
-import { testAssetUri } from "../../fixtures";
 import { TestExplorer } from "../../../src/TestExplorer/TestExplorer";
 import {
     assertContains,
@@ -39,7 +38,11 @@ import {
     reduceTestItemChildren,
 } from "../../../src/TestExplorer/TestUtils";
 import { runnableTag } from "../../../src/TestExplorer/TestDiscovery";
-import { activateExtensionForSuite, updateSettings } from "../utilities/testutilities";
+import {
+    activateExtensionForSuite,
+    folderInRootWorkspace,
+    updateSettings,
+} from "../utilities/testutilities";
 import { Commands } from "../../../src/commands";
 import { SwiftToolchain } from "../../../src/toolchain/toolchain";
 
@@ -54,10 +57,7 @@ suite("Test Explorer Suite", function () {
     activateExtensionForSuite({
         async setup(ctx) {
             workspaceContext = ctx;
-            const packageFolder = testAssetUri("defaultPackage");
-            const targetFolder = workspaceContext.folders.find(
-                folder => folder.folder.path === packageFolder.path
-            );
+            const targetFolder = await folderInRootWorkspace("defaultPackage", workspaceContext);
 
             if (!targetFolder) {
                 throw new Error("Unable to find test explorer");

test/integration-tests/testexplorer/utilities.ts

@@ -164,7 +164,7 @@ export function assertTestResults(
     );
 }
 
-function syncPromise(callback: () => void): Promise<void> {
+export function syncPromise(callback: () => void): Promise<void> {
     return new Promise(resolve => {
         callback();
         resolve();
@@ -188,14 +188,11 @@ export function eventPromise<T>(event: vscode.Event<T>): Promise<T> {
 export async function waitForTestExplorerReady(
     testExplorer: TestExplorer
 ): Promise<vscode.TestController> {
-    return (
-        await Promise.all([
-            testExplorer.controller.items.size === 0
-                ? eventPromise(testExplorer.onTestItemsDidChange)
-                : Promise.resolve(testExplorer.controller),
-            syncPromise(() => vscode.commands.executeCommand("workbench.view.testing.focus")),
-        ])
-    )[0];
+    await vscode.commands.executeCommand("workbench.view.testing.focus");
+    const controller = await (testExplorer.controller.items.size === 0
+        ? eventPromise(testExplorer.onTestItemsDidChange)
+        : Promise.resolve(testExplorer.controller));
+    return controller;
 }
 
 /**