Test Planning
A test plan is the single document that ties together scope, approach, resources, and schedule for a testing effort. Most teams either skip it entirely or write one so bloated it never gets read. This guide shows you how to write a lean, useful test plan based on the IEEE
Test Automation
Multi-tenant data isolation can be implemented in several ways: shared tables with a tenant_id column, separate schemas per tenant, or separate databases per tenant. Each requires different testing approaches. This post focuses on testing shared-table and RLS-based isolation — the most common pattern in modern SaaS. Isolation
Test Automation
Billing is the highest-stakes area of a SaaS application. Bugs here cost real money — charging the wrong amount, failing to cancel subscriptions, missing usage records, or double-billing. Testing billing requires testing the logic layer (unit tests), the webhook handlers (integration tests), and the full lifecycle end-to-end.
Test Automation
Role-based access control (RBAC) defines what each user role can do. Testing RBAC means verifying not just that permitted actions work, but that forbidden ones are properly blocked — including attempts to escalate privileges. The Permission Matrix Start by mapping every resource and action to allowed roles: const PERMISSIONS = { projects:
Test Automation
Multi-tenant SaaS applications share infrastructure across customers while keeping their data completely isolated.
Test Automation
Test fixtures for multi-tenant applications need to create data within specific tenant contexts and clean up completely between tests.
Test Automation
Media-heavy applications — platforms that handle user-uploaded images, videos, audio, or documents — have unique testing requirements.
Test Automation
Writing the email and ensuring it sends is only half the job. The other half is ensuring it actually reaches the inbox.
Test Automation
Feature flags introduce conditional logic that multiplies the number of code paths your application can take.
Test Automation
Background jobs power the asynchronous side of your application: sending emails, processing uploads, syncing data, sending webhooks.
Test Automation
A/B testing (split testing) lets you run controlled experiments — showing variant A to one group and variant B to another — to measure which performs better.
Test Reporting
Running tests is table stakes. Understanding what the results mean over time — that's where teams actually improve their quality practice.