chore: add playwright cursor skill

2026-05-13 09:42:40 +02:00 · 2026-05-10 04:19:55 +05:30 · 2026-05-10 04:19:55 +05:30 · d52225c18d
commit d52225c18d
parent 25aad38ca4
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--- a/.cursor/skills/playwright-testing/infrastructure-ci-cd/gitlab.md
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+# GitLab CI/CD Configuration
+
+## Table of Contents
+
+1. [Key Commands](#key-commands)
+2. [Patterns](#patterns)
+3. [Decision Guide](#decision-guide)
+4. [Anti-Patterns](#anti-patterns)
+5. [Troubleshooting](#troubleshooting)
+
+> **When to use**: Running Playwright tests in GitLab pipelines on merge requests, merges to main, or scheduled pipelines.
+
+## Key Commands
+
+```bash
+npx playwright install --with-deps    # install browsers + OS deps
+npx playwright test --shard=1/4       # run 1 of 4 parallel shards
+npx playwright merge-reports ./blob-report  # merge shard results
+npx playwright test --reporter=dot    # minimal output for CI logs
+```
+
+## Patterns
+
+### Basic Pipeline Configuration
+
+**Use when**: Any GitLab project with Playwright tests.
+
+```yaml
+# .gitlab-ci.yml
+image: mcr.microsoft.com/playwright:v1.48.0-noble
+
+stages:
+  - install
+  - test
+  - report
+
+variables:
+  CI: "true"
+  npm_config_cache: "$CI_PROJECT_DIR/.npm"
+
+cache:
+  key:
+    files:
+      - package-lock.json
+  paths:
+    - .npm/
+    - node_modules/
+
+setup:
+  stage: install
+  script:
+    - npm ci
+  artifacts:
+    paths:
+      - node_modules/
+    expire_in: 1 hour
+
+e2e:
+  stage: test
+  needs: [setup]
+  script:
+    - npx playwright test
+  artifacts:
+    when: always
+    paths:
+      - playwright-report/
+      - test-results/
+    expire_in: 14 days
+  rules:
+    - if: $CI_PIPELINE_SOURCE == "merge_request_event"
+    - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH
+```
+
+### Sharded Parallel Execution
+
+**Use when**: Test suite exceeds 10 minutes. GitLab's `parallel` keyword splits across jobs automatically.
+**Avoid when**: Suite runs under 5 minutes.
+
+```yaml
+image: mcr.microsoft.com/playwright:v1.48.0-noble
+
+stages:
+  - install
+  - test
+  - report
+
+variables:
+  CI: "true"
+  npm_config_cache: "$CI_PROJECT_DIR/.npm"
+
+cache:
+  key:
+    files:
+      - package-lock.json
+  paths:
+    - .npm/
+    - node_modules/
+
+setup:
+  stage: install
+  script:
+    - npm ci
+  artifacts:
+    paths:
+      - node_modules/
+    expire_in: 1 hour
+
+e2e:
+  stage: test
+  needs: [setup]
+  parallel: 4
+  script:
+    - npx playwright test --shard=$CI_NODE_INDEX/$CI_NODE_TOTAL
+  artifacts:
+    when: always
+    paths:
+      - blob-report/
+    expire_in: 1 hour
+  rules:
+    - if: $CI_PIPELINE_SOURCE == "merge_request_event"
+    - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH
+
+combine-reports:
+  stage: report
+  needs: [e2e]
+  when: always
+  script:
+    - npx playwright merge-reports --reporter=html ./blob-report
+  artifacts:
+    when: always
+    paths:
+      - playwright-report/
+    expire_in: 14 days
+```
+
+**Config for sharded pipelines:**
+
+```typescript
+// playwright.config.ts
+export default defineConfig({
+  reporter: process.env.CI
+    ? [["blob"], ["dot"]]
+    : [["html", { open: "on-failure" }]],
+});
+```
+
+### Environment Variables and Secrets
+
+**Use when**: Tests need secrets (API keys, passwords) and should only run on merge requests or the default branch.
+
+```yaml
+image: mcr.microsoft.com/playwright:v1.48.0-noble
+
+stages:
+  - test
+
+variables:
+  CI: "true"
+
+e2e:staging:
+  stage: test
+  variables:
+    BASE_URL: $STAGING_URL
+    TEST_PASSWORD: $TEST_PASSWORD
+    API_KEY: $API_KEY
+  before_script:
+    - npm ci
+  script:
+    - npx playwright test
+  artifacts:
+    when: always
+    paths:
+      - playwright-report/
+      - test-results/
+    expire_in: 14 days
+  rules:
+    - if: $CI_PIPELINE_SOURCE == "merge_request_event"
+    - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH
+    - when: manual
+      allow_failure: true
+```
+
+**Setting variables in GitLab:**
+Navigate to **Settings > CI/CD > Variables** and add:
+
+- `STAGING_URL` -- not masked, not protected
+- `TEST_PASSWORD` -- masked, protected
+- `API_KEY` -- masked, protected
+
+### Multi-Browser Matrix
+
+**Use when**: Running Chromium on MRs and all browsers on the default branch.
+
+```yaml
+image: mcr.microsoft.com/playwright:v1.48.0-noble
+
+stages:
+  - install
+  - test
+
+variables:
+  CI: "true"
+
+setup:
+  stage: install
+  script:
+    - npm ci
+  artifacts:
+    paths:
+      - node_modules/
+    expire_in: 1 hour
+
+e2e:chromium:
+  stage: test
+  needs: [setup]
+  script:
+    - npx playwright test --project=chromium
+  artifacts:
+    when: always
+    paths:
+      - playwright-report/
+      - test-results/
+    expire_in: 14 days
+  rules:
+    - if: $CI_PIPELINE_SOURCE == "merge_request_event"
+
+e2e:all-browsers:
+  stage: test
+  needs: [setup]
+  parallel:
+    matrix:
+      - PROJECT: [chromium, firefox, webkit]
+  script:
+    - npx playwright test --project=$PROJECT
+  artifacts:
+    when: always
+    paths:
+      - playwright-report/
+      - test-results/
+    expire_in: 14 days
+  rules:
+    - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH
+```
+
+### Services Integration (Database, Cache)
+
+**Use when**: Tests need the application running alongside Playwright, or you need external services.
+
+```yaml
+stages:
+  - test
+
+e2e:integration:
+  stage: test
+  image: mcr.microsoft.com/playwright:v1.48.0-noble
+  services:
+    - name: postgres:latest
+      alias: db
+    - name: redis:latest
+      alias: cache
+  variables:
+    CI: "true"
+    DATABASE_URL: "postgresql://postgres:postgres@db:5432/testdb"
+    REDIS_URL: "redis://cache:6379"
+    POSTGRES_PASSWORD: "postgres"
+    POSTGRES_DB: "testdb"
+  before_script:
+    - npm ci
+    - npx prisma db push
+    - npx prisma db seed
+  script:
+    - npx playwright test
+  artifacts:
+    when: always
+    paths:
+      - playwright-report/
+      - test-results/
+    expire_in: 14 days
+  rules:
+    - if: $CI_PIPELINE_SOURCE == "merge_request_event"
+    - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH
+```
+
+### Scheduled Nightly Regression
+
+**Use when**: Full regression is too slow for every MR.
+
+```yaml
+e2e:nightly:
+  stage: test
+  image: mcr.microsoft.com/playwright:v1.48.0-noble
+  before_script:
+    - npm ci
+  script:
+    - npx playwright test --grep @regression
+  artifacts:
+    when: always
+    paths:
+      - playwright-report/
+    expire_in: 30 days
+  rules:
+    - if: $CI_PIPELINE_SOURCE == "schedule"
+```
+
+Set up the schedule in **CI/CD > Schedules**: `0 3 * * 1-5` (3 AM UTC, weekdays).
+
+## Decision Guide
+
+| Scenario                             | Approach                                               | Why                                                 |
+| ------------------------------------ | ------------------------------------------------------ | --------------------------------------------------- |
+| Simple project, < 5 min suite        | Single `test` job using Playwright Docker image        | No sharding overhead; artifacts capture report      |
+| Suite > 10 min                       | `parallel: N` with `--shard`                           | GitLab auto-assigns `CI_NODE_INDEX`/`CI_NODE_TOTAL` |
+| Merge request fast feedback          | Chromium only on MRs; all browsers on main             | 3x fewer pipeline minutes on MRs                    |
+| External services needed (DB, Redis) | `services:` keyword with Postgres/Redis images         | GitLab manages service lifecycle                    |
+| Secrets for staging environment      | GitLab CI/CD Variables (masked + protected)            | Never hardcode secrets in `.gitlab-ci.yml`          |
+| Full nightly regression              | Pipeline schedule (`CI_PIPELINE_SOURCE == "schedule"`) | Avoids blocking MR pipelines                        |
+| Report browsing                      | `artifacts:` with `paths: [playwright-report/]`        | Browse directly in GitLab job artifacts UI          |
+
+## Anti-Patterns
+
+| Anti-Pattern                                         | Problem                                                            | Do This Instead                                                           |
+| ---------------------------------------------------- | ------------------------------------------------------------------ | ------------------------------------------------------------------------- |
+| Not using the Playwright Docker image                | Installing browsers every run adds 1-2 minutes                     | Use `mcr.microsoft.com/playwright:v1.48.0-noble` as base image                   |
+| `artifacts: when: on_failure` only                   | No report when tests pass; can't verify results                    | Use `when: always` to capture reports regardless                          |
+| No `expire_in` on artifacts                          | Artifacts accumulate and consume storage                           | Set `expire_in: 14 days` for reports, `1 hour` for intermediate artifacts |
+| Hardcoding `CI_NODE_TOTAL` in shard flag             | Breaks when you change `parallel:` value                           | Use `--shard=$CI_NODE_INDEX/$CI_NODE_TOTAL`                               |
+| Skipping `needs:` between stages                     | Jobs wait for all previous stage jobs, not just their dependencies | Use `needs:` for precise dependency graphs                                |
+| Large `cache:` including `node_modules/` without key | Stale cache causes version conflicts                               | Key cache on `package-lock.json` hash                                     |
+
+## Troubleshooting
+
+### Browser launch fails: "Failed to launch browser"
+
+**Cause**: Not using the Playwright Docker image, or using a version that doesn't match your `@playwright/test` version.
+
+**Fix**: Match the Docker image tag to your Playwright version:
+
+```yaml
+# Check your version: npm ls @playwright/test
+image: mcr.microsoft.com/playwright:v1.48.0-noble
+```
+
+### Tests hang in GitLab runner: "Navigation timeout exceeded"
+
+**Cause**: GitLab shared runners may have limited resources.
+
+**Fix**: Reduce workers and increase timeouts:
+
+```typescript
+export default defineConfig({
+  workers: process.env.CI ? 2 : undefined,
+  use: {
+    navigationTimeout: process.env.CI ? 30_000 : 15_000,
+  },
+});
+```
+
+### Pipeline runs on every push, not just merge requests
+
+**Cause**: Missing `rules:` configuration.
+
+**Fix**: Add explicit rules:
+
+```yaml
+rules:
+  - if: $CI_PIPELINE_SOURCE == "merge_request_event"
+  - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH
+```
+
+### Services (Postgres/Redis) not reachable from tests
+
+**Cause**: Using `localhost` instead of the service alias.
+
+**Fix**: Use the service alias as hostname:
+
+```yaml
+services:
+  - name: postgres:latest
+    alias: db
+
+variables:
+  DATABASE_URL: "postgresql://postgres:postgres@db:5432/testdb"
+```
+
+### Merged report is empty after sharded run
+
+**Cause**: Each shard job needs the `blob` reporter, not `html`.
+
+**Fix**: Configure blob reporter for CI:
+
+```typescript
+export default defineConfig({
+  reporter: process.env.CI
+    ? [["blob"], ["dot"]]
+    : [["html", { open: "on-failure" }]],
+});
+```