Working example

src/extension.ts

@@ -1,12 +1,17 @@
 import * as vscode from 'vscode';
 import os from 'os';
 import path from 'path';
+import fs from 'fs';
 import testCode from './tester';
 
 let resetTimer = () => {}
 
 const speedCodePath = path.join(os.homedir(), ".speed-code/");
 
+if (!fs.existsSync(speedCodePath)) {
+  fs.mkdirSync(speedCodePath);
+}
+
 export async function openAndFocusFile(filePath: string) {
   const document = await vscode.workspace.openTextDocument(filePath);
   await vscode.window.showTextDocument(document, { preview: false, preserveFocus: false });
@@ -19,19 +24,6 @@ function isPalindrome(s) {
 `;
 
 export function activate(context: vscode.ExtensionContext) {
-  const [isValid, res] = testCode(userCode, [{
-    input: ["racecar"],
-    expected: true
-  },{
-    input: ["hello"],
-    expected: false
-  },{
-    input: ["madam"],
-    expected: true
-  },]);
-
-  vscode.window.showInformationMessage('Speedrun info: ' + JSON.stringify(res));
-
   const statusBarItem = vscode.window.createStatusBarItem(vscode.StatusBarAlignment.Left, 100);
   statusBarItem.tooltip = 'Speedrun timer';
   statusBarItem.text = "No active Speedrun";
@@ -49,6 +41,26 @@ export function activate(context: vscode.ExtensionContext) {
   resetTimer();
 
   context.subscriptions.push(vscode.commands.registerCommand('speed-code.startSpeedRun', () => {
+    const runFilePath = path.join(speedCodePath, 'isPalindrome.js');
+    fs.writeFileSync(runFilePath, '');
+
+    openAndFocusFile(runFilePath);
+
+    setTimeout(() => {
+      const [isValid, res] = testCode(fs.readFileSync(runFilePath).toString(), [{
+        input: ["racecar"],
+        expected: true
+      },{
+        input: ["hello"],
+        expected: false
+      },{
+        input: ["madam"],
+        expected: true
+      },]);
+
+      vscode.window.showInformationMessage('Speedrun info: ' + JSON.stringify(res) + 'Summary: ' + isValid);
+    }, 2000);
+
     const startTime = Date.now();
     timer = setInterval(() => {
       const currentTime = Date.now();

src/tester.ts

@@ -38,5 +38,5 @@ export default function testCode(code: string, testCases: TestCase[]): [boolean,
         }
     });
 
-    return [tests.every(t => t), tests];
+    return [tests.every(t => t.valid), tests];
 }