KR-qa-12 · file-based routing

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Courses with searchable labs

Use the filters to match your testing layer, toolchain, class pace, and practice format. Prices are informational only—there is no checkout on this site.

Cover for Accessibility audits engineers respect
Browser automation

Accessibility audits engineers respect

Move from checkbox scans to prioritized fixes developers will schedule before the next train.

₩860,000Open syllabus
Cover for API Contract Lab — Hardening REST flows
API testing

API Contract Lab — Hardening REST flows

Design contract checks, negative paths, and schema drift alarms for services your teams ship weekly.

₩920,000Open syllabus
Cover for CI triage theater — red builds that teach
Test design

CI triage theater — red builds that teach

Turn failing pipelines into learning moments: flake taxonomy, quarantine rules, and respectful paging.

₩1,120,000Open syllabus
Cover for Contract Tests for Messy Handoffs
API testing

Contract Tests for Messy Handoffs

Keep mobile, web, and BFF layers honest when payloads bounce between teams every sprint.

₩890,000Open syllabus
Cover for Data validation for analytics APIs
API testing

Data validation for analytics APIs

Guard analytical endpoints where silent drift costs trust: schema snapshots, anomaly cues, and reviewer rituals.

₩940,000Open syllabus
Cover for k6 Signals for API SLO guardrails
API testing

k6 Signals for API SLO guardrails

Model steady-state, spikes, and soak patterns that talk to SLO dashboards your SREs already watch.

₩980,000Open syllabus
Cover for Playwright Lanes — Parallel browsers without chaos
Browser automation

Playwright Lanes — Parallel browsers without chaos

Stabilize sharded UI suites with tracing, fixture hygiene, and artifact policies that ops will not fight.

₩1,180,000Open syllabus
Cover for Regression Design Studio
Test design

Regression Design Studio

Map risk heat, select minimal suites, and defend scope to leadership without sounding dismissive.

₩1,050,000Open syllabus
Cover for War-room facilitation for release weekends
Test design

War-room facilitation for release weekends

Facilitate weekend releases without heroics: checklists, comms cadence, and calm defect routing.

₩1,750,000Open syllabus