feat: adding front end test login page

loginUserFrontEnd.js

@@ -0,0 +1,39 @@
+import { chromium } from "k6/experimental/browser";
+import { check } from "k6";
+
+export const options = {
+  vus: 3,
+  duration: "5s",
+  thresholds: {
+    checks: ["rate > 0.99"],
+  },
+};
+
+export default async function () {
+  const browser = chromium.launch({ headless: false });
+  const page = browser.newContext().newPage();
+
+  try {
+    await page.goto("https://test-api.k6.io", { waitUntil: "networkidle" });
+
+    await Promise.all([
+      page.waitForNavigation(),
+      page.locator('a[href="/my_messages.php"]').click(),
+    ]);
+
+    page.locator('input[name="login"]').fill("admin");
+    page.locator('input[name="password"]').fill("123");
+
+    await Promise.all([
+      page.waitForNavigation(),
+      page.locator('input[type="submit"]').click(),
+    ]);
+
+    check(page, {
+      header: page.locator("h2").textContent() === "Welcome, admin!",
+    });
+  } finally {
+    page.close();
+    browser.close();
+  }
+}