E-Commerce6 months engagement

Global Fashion E-Commerce

Comprehensive QA for a celebrity-backed athleisure brand with millions of monthly visitors, complex subscription models, and international checkout flows. The storefront operated in 12 countries with localized pricing, currency conversion, and region-specific tax calculations. We built automated API test suites using PactumJS to validate all backend endpoints, payment integrations, and subscription billing APIs. We also built a custom AI-powered migration agent using GitHub Copilot that converted their entire legacy Python Robot Framework test suite into modern Playwright tests, saving months of manual rewrite work.

WebMobile WebFunctional QAPerformance TestingAPI TestingAI Automation

Revenue lost

150+

Tests migrated by AI

Faster test execution

The Challenge

Flash Sale Traffic Spikes

50,000 concurrent users hitting the site within seconds of a product drop. Any checkout bug during a sale meant direct revenue loss at scale.

Complex Billing Logic

VIP membership billing included free trials, annual vs monthly cycles, discount stacking with promo codes, and pause/resume functionality.

Shopify Plus Risk

Heavy customization on Shopify Plus meant every platform update risked breaking their custom checkout logic and payment integrations.

Legacy Test Migration

A brittle Python Robot Framework test suite needed migration to Playwright, but the client could not afford months of manual rewriting.

Tools Used

Playwright

Cypress

GitHub Copilot

PactumJS

Python

TypeScript

BrowserStack

Postman

Jenkins

Grafana

Playwright

Cypress

GitHub Copilot

PactumJS

Python

TypeScript

BrowserStack

Postman

Jenkins

Grafana

Our Approach

How We Tested This Project

Checkout Flow Mapping

We mapped every possible path through the checkout funnel, including guest checkout, VIP member checkout, Affirm financing, and international orders. This produced 85+ distinct user journeys that formed the basis of our test plan.

AI Test Migration Agent

Built a custom automation agent using GitHub Copilot that analyzed each Python Robot Framework test case, understood the test intent and assertions, and generated equivalent Playwright TypeScript tests with proper page object patterns. The agent handled keyword-driven tests, custom libraries, and data-driven scenarios. We validated every migrated test against the original to ensure identical coverage.

Flash Sale Simulations

Conducted load tests that replicated real flash sale traffic patterns, including the initial surge, add-to-cart race conditions, and payment processing under peak concurrency. We identified and reported three bottlenecks that the engineering team resolved before the next sale.

Cross-Device Validation

Used BrowserStack to test across 40+ device and browser combinations, with a focus on the mobile checkout experience where 70% of their traffic originated. We flagged responsive layout breaks and touch interaction issues before each major campaign.

AI Innovation

How We Migrated 150+ Tests with AI

We built a custom automation agent using GitHub Copilot that analyzed Python Robot Framework tests and generated equivalent Playwright TypeScript code automatically.

Scope

What We Tested

01VIP membership subscription billing cycles including trial conversions, pauses, and cancellations

02Multi-currency checkout across 12 currencies with real-time exchange rate validation

03Flash sale load testing simulating 50K concurrent users hitting the same product page

04Product filtering and search accuracy across 2,000+ SKUs with variant combinations

05Mobile-first responsive testing across 15+ breakpoints and device sizes

06Third-party integration testing (Shopify Plus, Klaviyo, Affirm, ReCharge)

07Promo code and discount stacking rules with edge cases around expiration and usage limits

08Cart persistence across sessions, devices, and guest-to-authenticated user transitions

09International shipping rate calculation and delivery estimate accuracy

10SEO-critical page load performance and Core Web Vitals compliance

11API automation using PactumJS for payment endpoints, subscription billing, and inventory APIs

12Backend contract testing between Shopify Plus storefront and custom microservices

13AI-powered migration of 150+ Robot Framework tests to Playwright TypeScript

14Validation of migrated test accuracy against original test outcomes

Impact

Results & Business Impact

Zero Revenue Loss

Four major flash sales completed without a single checkout failure. Cart abandonment dropped 18% after fixing three mobile UX bugs.

100% Billing Accuracy

The subscription billing system processed over 30,000 VIP membership renewals with 100% accuracy.

3 New Markets

The client expanded to three additional international markets with confidence in the multi-currency checkout validation.

150+ Tests Migrated

AI-powered agent converted 150+ Robot Framework tests to Playwright in under 2 weeks — a task estimated at 3-4 months manually.

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