Test Cases for Login Page: 50 Examples + Free Template (2026)

Last updated: July 12, 2026 · 14 min read · Reviewed by Priyanka G.

Writing test cases for a login page is the #1 QA exercise in interviews and the most common regression suite you will ever own. This guide gives you 50 production-grade test cases covering UI, functional, validation, security, session, accessibility and performance — plus a free CSV template you can drop straight into Jira, TestRail, Xray or Zephyr.

If you are new to test case writing, start with our Manual Testing Complete Guide and the How to Write Test Cases for a Login Page primer, then come back here for the full 50-case suite.

Grab the CSV, import it into your test management tool, and edit as needed. Columns match the ISTQB test-case template: TC_ID, Category, Title, Preconditions, Test Steps, Test Data, Expected Result, Priority, Status.

Before writing test cases, identify every element on the page. A modern login page usually contains:

• Email / Username field
• Password field with show/hide toggle
• Remember me checkbox
• Sign in button (primary CTA)
• Forgot password link
• Sign up / Create account link
• Social login buttons (Google, Apple, Microsoft)
• Error / success message region (with role="alert")
• CAPTCHA or rate-limit banner (conditional)
• Legal footer (Terms, Privacy)

Every element above maps to at least one test case in the sections below.

TC_ID: TC_FN_001
Category: Functional
Title: Successful login with valid credentials
Preconditions: Verified account exists; user is logged out
Test Steps:
  1. Navigate to /login
  2. Enter admin@example.com in the Email field
  3. Enter Sup3rSecret! in the Password field
  4. Click Sign in
Test Data: admin@example.com / Sup3rSecret!
Expected Result: HTTP 302 redirect to /dashboard; welcome banner shows user name
Priority: P0 (blocker)
Status: Pass / Fail / Blocked

Priority scale used below: P0 = release blocker, P1 = smoke suite, P2 = full regression, P3 = nice-to-have / weekly.

These map directly to Equivalence Partitioning and Boundary Value Analysis — see the linked article for the theory.

For a deeper security walkthrough, see our Security Testing for QA guide and the OWASP Top 10 reference.

See our WCAG Accessibility Testing Guide for the full checklist beyond login.

Automate TC_PERF_002 and TC_PERF_003 with k6 or JMeter.

P0 — Smoke (every deploy, must pass)

• TC_FN_001, TC_FN_002, TC_FN_003, TC_FN_005
• TC_SEC_001, TC_SEC_002, TC_SEC_003, TC_SEC_004, TC_SEC_006, TC_SEC_007, TC_SEC_008, TC_SEC_009
• TC_SES_001, TC_SES_003
• TC_UI_002

P1 — Sanity (every PR)

• TC_FN_004, TC_FN_007–012
• TC_VAL_001–003
• TC_UI_004, TC_UI_008
• TC_SES_002, TC_SEC_010
• TC_A11Y_001–005, TC_PERF_001–002

P2 — Full regression (nightly)

• TC_UI_001, TC_UI_003, TC_UI_005
• TC_FN_006, TC_VAL_004–006, TC_VAL_008
• TC_SEC_005, TC_SES_004, TC_PERF_003

P3 — Weekly / pre-release

• TC_UI_006, TC_UI_007, TC_VAL_007

You will never automate all 50 on day one. Start with the highest ROI:

1. P0 functional (TC_FN_001–005) — 30-min Playwright script, runs on every PR. See our Playwright Complete Guide.
2. P0 security (TC_SEC_001–004, TC_SEC_006) — Playwright + OWASP ZAP Baseline in CI.
3. Accessibility (TC_A11Y_001–004) — @axe-core/playwright assertion in the same login spec.
4. Performance (TC_PERF_002, TC_PERF_003) — k6 script hitting /api/login, run nightly.

Practice Playwright login-flow patterns with our Playwright interview question bank.

• Testing only the happy path. Interviewers and users both find bugs in the failure branches.
• Leaking which field is wrong. “Wrong password” vs “Unknown email” lets attackers enumerate accounts.
• Skipping session rotation (TC_SEC_009). Session fixation is a top-5 OWASP issue.
• Hard-coding sleeps in automation. Use auto-waiting locators; see our Playwright locators guide.
• Forgetting the mobile viewport. More than 60% of logins happen on mobile.

• Download the 50-case CSV template
• How to Write Test Cases for a Login Page (primer)
• Manual Testing Complete Guide
• Security Testing for QA
• Accessibility Testing (WCAG) Guide
• Software Testing Interview Questions
• Scenario-based testing interview questions
• Practice with AI Mock Interview
• OWASP Top 10 (official)