QA Browser Tester

Exhaustive automated QA testing via headless Chromium browser.

Works on bare Linux servers and inside Docker containers.

How to Use This Skill

1. Read this file fully before starting
2. Follow the phases IN ORDER — never skip Phase 0 or Phase 1
3. See references/docker-setup.md for Docker-specific install instructions
4. See references/test-phases.md for the full test script

PHASE 0 — DETECT ENVIRONMENT

Run these commands and report ALL output before doing anything else:

cat /etc/os-release 2>/dev/null | head -3
cat /proc/1/cgroup | grep -i docker && echo "YES: inside Docker" || echo "not in Docker"
whoami && id
which apt-get apk yum 2>/dev/null || echo "no package manager found"
python3 --version 2>/dev/null || echo "no python3"
pip3 --version 2>/dev/null || echo "no pip3"
node --version 2>/dev/null || echo "no node"
python3 -c "import playwright; print('playwright already installed')" 2>/dev/null || echo "playwright NOT installed"
which chromium chromium-browser google-chrome 2>/dev/null || echo "no browser binary"
df -h / | tail -1
curl -s --max-time 5 https://pypi.org > /dev/null && echo "internet OK" || echo "NO INTERNET"

→ If inside Docker, read references/docker-setup.md before proceeding.

→ If on bare Linux, continue to Phase 1 directly.

PHASE 1 — INSTALL PLAYWRIGHT

Standard Linux (apt available):

apt-get update -qq && apt-get install -y python3-pip curl -qq
pip3 install playwright
python3 -m playwright install chromium
python3 -m playwright install-deps chromium

Alpine (apk available):

apk add --no-cache chromium nss freetype harfbuzz ca-certificates ttf-freefont python3 py3-pip
pip3 install playwright
export PLAYWRIGHT_CHROMIUM_EXECUTABLE_PATH=$(which chromium-browser || which chromium)
python3 -m playwright install chromium

No package manager / no pip:

curl https://bootstrap.pypa.io/get-pip.py -o /tmp/get-pip.py
python3 /tmp/get-pip.py
pip3 install playwright
python3 -m playwright install chromium
python3 -m playwright install-deps chromium

PHASE 2 — VERIFY BROWSER WORKS

⚠️ CRITICAL: On any Linux server or Docker container, Chromium MUST be launched

with these exact flags or it will crash:

--no-sandbox
--disable-dev-shm-usage
--disable-gpu
--disable-setuid-sandbox
--single-process

Run this verification test:

python3 << 'EOF'
from playwright.sync_api import sync_playwright

DOCKER_ARGS = [
    "--no-sandbox",
    "--disable-dev-shm-usage",
    "--disable-gpu",
    "--disable-setuid-sandbox",
    "--single-process",
]

with sync_playwright() as p:
    browser = p.chromium.launch(headless=True, args=DOCKER_ARGS)
    page = browser.new_page()
    page.goto("https://example.com", wait_until="networkidle")
    print(f"✅ Browser OK — title: {page.title()}")
    browser.close()
EOF

✅ SUCCESS → continue to Phase 3

❌ FAILURE → report exact error, stop, do not proceed

PHASE 3 — RUN EXHAUSTIVE TESTS

Read references/test-phases.md for the complete test script.

Set the target URL before running:

BASE_URL = "https://your-app-url-here.com"   # ← change this

Create screenshot directory:

mkdir -p /tmp/qa_screenshots

PHASE 4 — PRODUCE FINAL REPORT

After tests complete:

ls -la /tmp/qa_screenshots/

Then output this report:

## QA EXHAUSTIVE TEST REPORT
Date/Time: [timestamp]
Target URL: [url]
Environment: Docker / Linux

### COVERAGE
Pages visited:      X
Nav items clicked:  X
Buttons clicked:    X
Forms tested:       X
Edge cases run:     X

### BUGS FOUND

🔴 CRITICAL (broken functionality)
1. [page] — [what happened]

🟡 MEDIUM (works but wrong)
1. [page] — [what happened]

🟢 MINOR (cosmetic / UX)
1. [page] — [what happened]

### UNTESTED AREAS
1. [reason why it couldn't be tested]

### SCREENSHOTS SAVED
[list files in /tmp/qa_screenshots/]

### VERDICT: [X/10] — [one sentence summary]