1. Executive Summary

This test plan establishes the regression testing strategy for a major overhaul of the platform's authentication and authorization system. The project replaces legacy session-based authentication with OAuth 2.0 + JWT tokens and introduces role-based access control (RBAC) enhancements.

Criticality: CRITICAL — Any authentication/authorization failure results in complete platform outage or security breach.

2. Objectives

• Verify all existing login/logout workflows continue to function with new authentication mechanism
• Confirm all user roles and permissions continue to enforce access controls correctly
• Validate session management, token refresh, and timeout behavior
• Test integration with existing single sign-on (SSO) providers
• Verify API backward compatibility for authenticated endpoints
• Ensure no cross-tenant data leakage due to authorization changes
• Validate password reset, account recovery flows
• Test concurrent session management (multi-device login)
• Verify audit logging of authentication events

3. Scope

In Scope

Authentication Flows:

• Username/password login
• Social login (Google, Microsoft, GitHub)
• SAML SSO (enterprise customers)
• Password reset via email
• Account lockout after failed attempts
• Multi-factor authentication (MFA) — email, TOTP
• Session timeout and forced re-authentication
• "Remember me" / persistent login

Authorization & Access Control:

• Role-based access control (Admin, Editor, Viewer, Guest)
• Resource-level permissions (view/edit/delete documents)
• Team/organization scoping (multi-tenant isolation)
• Permission inheritance and overrides
• API token scopes and rate limiting

4. Test Strategy

Risk-Based Testing Approach

Since this is a critical system with high failure risk, we employ risk-based testing to prioritize the most impactful scenarios:

Risk Tier	Scenarios	Test Effort	Priority
CRITICAL	Login/logout, RBAC enforcement, data isolation, session timeout	35%	Must pass 100%
HIGH	Password reset, MFA, SSO, API authentication	35%	Must pass ≥95%
MEDIUM	Account lockout, persistent login, token refresh edge cases	20%	Must pass ≥90%
LOW	UI error messages, logging, audit trails	10%	Must pass ≥85%

5. Risk Assessment & Mitigation

Risk	Probability	Impact	Mitigation Strategy
User locked out of platform	Medium	CRITICAL	Comprehensive login/logout test coverage; rollback plan
Authorization bypass	Low	CRITICAL	Detailed RBAC testing matrix; security peer review
Token expiration not handled	Medium	High	Test token refresh on all endpoints
SSO integration breaks	Medium	High	Pre-release SSO provider testing

6. Entry Criteria

• New authentication system deployed to QA environment
• Legacy authentication system still operational for rollback
• Test data prepared (users with various roles, SSO integrations configured)
• API documentation updated with new authentication headers
• Mobile app build with new OAuth flow compiled
• SSO providers configured in QA environment
• Audit logging system capturing authentication events
• Security review of new auth code completed

7. Exit Criteria

• ≥100% of CRITICAL test cases passed
• ≥95% of HIGH test cases passed
• ≥90% of MEDIUM test cases passed
• All P0 (blocking) bugs resolved
• Zero security vulnerabilities identified
• Token expiration and refresh behavior validated
• RBAC enforcement validated across all role combinations
• SSO provider integrations tested and confirmed working
• Audit logs validated for all auth events
• API backward compatibility confirmed
• Security and Product teams sign-off

8. Test Schedule

Phase	Duration	Timeline
Environment Setup	2 days	Week 1 Mon–Tue
API & Integration Testing	2 weeks	Weeks 1–2
Web UI Functional Testing	2 weeks	Weeks 2–3
Mobile Testing	1 week	Week 4
Cross-Browser Testing	3 days	Week 4
UAT & Security Review	1 week	Week 6

Go-Live Target: Start of Week 7

9. Resources

Team

• QA Manager (test planning, risk oversight, sign-off)
• QA Lead (day-to-day test coordination)
• QA Automation Engineer (API testing, test automation)
• QA Analysts × 3 (functional testing, web UI, edge cases)
• Mobile QA Analyst (mobile OAuth flow, app testing)
• Security Engineer (code review, vulnerability assessment)

10. Test Deliverables

• Test Plan (this document)
• Test Case Suite (minimum 150 test cases)
• Risk Assessment Matrix (detailed)
• RBAC Test Matrix (all role-permission combinations)
• Automated Test Scripts (Postman, Selenium, Appium)
• Performance Baseline Report
• Security Testing Report
• Regression Test Summary Report
• Defect Report
• Deployment Runbook with Rollback Procedures