diff --git a/.vscode-test.mjs b/.vscode-test.mjs
index b62ba25..1507065 100644
--- a/.vscode-test.mjs
+++ b/.vscode-test.mjs
@@ -1,5 +1,5 @@
 import { defineConfig } from '@vscode/test-cli';
 
 export default defineConfig({
-	files: 'out/test/**/*.test.js',
+	files: 'out/*.test.js',
 });
diff --git a/src/extension.test.ts b/src/extension.test.ts
index 4ca0ab4..a02f59d 100644
--- a/src/extension.test.ts
+++ b/src/extension.test.ts
@@ -1,15 +1,134 @@
-import * as assert from 'assert';
-
-// You can import and use all API from the 'vscode' module
-// as well as import your extension to test it
+import assert = require('assert');
 import * as vscode from 'vscode';
-// import * as myExtension from '../../extension';
+import sinon from 'sinon';
+import { SidebarProvider } from './SidebarProvider';
+
+const createMockExtensionContext = (): vscode.ExtensionContext => ({
+  subscriptions: [],
+  extensionPath: '/mock/path',
+  extensionUri: vscode.Uri.parse('file:///mock/path'),
+  globalState: {
+    get: sinon.stub(),
+    update: sinon.stub(),
+  },
+  workspaceState: {
+    get: sinon.stub(),
+    update: sinon.stub(),
+  },
+  asAbsolutePath: sinon.stub().returns('/mock/absolute/path'),
+  storagePath: '/mock/storage/path',
+  globalStoragePath: '/mock/global/storage/path',
+  logPath: '/mock/log/path',
+} as unknown as vscode.ExtensionContext);
+
+// Mock classes for FakeWebview and FakeWebviewView to simulate behavior
+class FakeWebview implements vscode.Webview {
+  public html = '';
+  public options = {};
+  public cspSource = '';
+  public onDidReceiveMessage = sinon.spy();
+  public asWebviewUri(uri: vscode.Uri): vscode.Uri {
+    return uri;
+  }
+  public postMessage(message: any): Thenable<boolean> {
+    this.onDidReceiveMessage(message); // Trigger the spy with the message
+    return Promise.resolve(true);
+  }
+}
+
+class FakeWebviewView implements vscode.WebviewView {
+  constructor(public webview: vscode.Webview) {}
+	viewType: any;
+	badge?: vscode.ViewBadge | undefined;
+	show(preserveFocus?: boolean): void {
+		throw new Error('Method not implemented.');
+	}
+  public title = '';
+  public description = '';
+  public onDidDispose = sinon.spy();
+  public onDidChangeVisibility = sinon.spy();
+  public onDidChangeViewState = sinon.spy();
+  public visible = true;
+  public dispose() {}
+}
+
+suite('Sidebar Test Suite', () => {
+
+  let mockContext: vscode.ExtensionContext;
+  let extensionUri: vscode.Uri;
+
+  setup(() => {
+    mockContext = createMockExtensionContext();
+    extensionUri = vscode.Uri.parse('http://www.example.com/some/path');
+  });
+
+  test('Sidebar Provider Registration', () => {
+    const sidebarProvider = new SidebarProvider(extensionUri, mockContext);
+
+    const registerWebviewViewProviderSpy = sinon.spy(vscode.window, 'registerWebviewViewProvider');
+
+    vscode.window.registerWebviewViewProvider('Test-Sidebar', sidebarProvider);
+
+    assert(registerWebviewViewProviderSpy.calledOnce);
+    assert(
+      registerWebviewViewProviderSpy.calledWith(
+        'Test-Sidebar',
+        sinon.match.instanceOf(SidebarProvider)
+      )
+    );
 
-suite('Extension Test Suite', () => {
-	vscode.window.showInformationMessage('Start all tests.');
+    registerWebviewViewProviderSpy.restore();
+  });
+  
 
-	test('Sample test', () => {
-		assert.strictEqual(-1, [1, 2, 3].indexOf(5));
-		assert.strictEqual(-1, [1, 2, 3].indexOf(0));
-	});
+  test('Sidebar Content Rendering', async () => {
+    const sidebarProvider = new SidebarProvider(extensionUri, mockContext);
+    const webview = new FakeWebview() as vscode.Webview;
+    const view = new FakeWebviewView(webview) as vscode.WebviewView;
+
+    await sidebarProvider.resolveWebviewView(view);
+
+    assert.strictEqual(
+      webview.html.includes('<link href="http://www.example.com/some/path/media/vscode.css" rel="stylesheet">'),
+      true
+    );
+	// Clean up
+
+  });
+
+  test('Sidebar Comprehensive Functionality', async () => {
+    const sidebarProvider = new SidebarProvider(extensionUri, mockContext);
+    const webview = new FakeWebview() as vscode.Webview;
+    const view = new FakeWebviewView(webview) as unknown as vscode.WebviewView;
+
+    await sidebarProvider.resolveWebviewView(view);
+
+    // Simulate the creation of the webview panel
+    assert.strictEqual(webview.html.includes('<!DOCTYPE html>'), true, 'DOCTYPE is missing');
+    assert.strictEqual(webview.html.includes('<html lang="en">'), true, 'HTML tag is missing');
+    assert.strictEqual(webview.html.includes('<head>'), true, 'Head tag is missing');
+    assert.strictEqual(webview.html.includes('<meta charset="UTF-8">'), true, 'UTF-8 charset meta tag is missing');
+    assert.strictEqual(webview.html.includes('<meta http-equiv="Content-Security-Policy"'), true, 'Content Security Policy meta tag is missing');
+    assert.strictEqual(webview.html.includes('<meta name="viewport"'), true, 'Viewport meta tag is missing');
+
+    // Test if all required stylesheets are being loaded
+    assert.strictEqual(webview.html.includes('http://www.example.com/some/path/media/reset.css'), true, 'Reset CSS is missing');
+    assert.strictEqual(webview.html.includes('http://www.example.com/some/path/media/vscode.css'), true, 'VS Code CSS is missing');
+    assert.strictEqual(webview.html.includes('http://www.example.com/some/path/sidebar/sidebar.css'), true, 'Sidebar CSS is missing');
+    assert.strictEqual(webview.html.includes('http://www.example.com/some/path/out/compiled/Config.css'), true, 'Config CSS is missing');
+
+    // Test if Google Fonts are being loaded
+    assert.strictEqual(webview.html.includes('https://fonts.googleapis.com'), true, 'Google Fonts preconnect is missing');
+    assert.strictEqual(webview.html.includes('https://fonts.gstatic.com'), true, 'Google Fonts static preconnect is missing');
+    assert.strictEqual(webview.html.includes('https://fonts.googleapis.com/css2?family=Baloo+2:wght@400..800&display=swap'), true, 'Baloo 2 font is missing');
+
+    // Clean up
+   
+  });
+
+  
 });
+function expect(count: any) {
+	throw new Error('Function not implemented.');
+}
+