Grammarly CI Integration

Overview

Set up CI/CD for Grammarly text analysis integrations: run unit tests with mocked grammar check and suggestion responses on every PR, validate live API connectivity for text scoring on merge to main. Grammarly's Text API provides writing quality scores, grammar corrections, and tone detection, so CI pipelines verify content quality gates, documentation linting, and automated writing feedback workflows.

GitHub Actions Workflow

# .github/workflows/grammarly-ci.yml
name: Grammarly CI
on:
  pull_request:
    paths: ['src/**', 'docs/**', 'tests/**']
  push:
    branches: [main]

jobs:
  unit-tests:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
        with: { node-version: '20' }
      - run: npm ci
      - run: npm test -- --reporter=verbose

  integration-tests:
    if: github.ref == 'refs/heads/main'
    needs: unit-tests
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
        with: { node-version: '20' }
      - run: npm ci
      - run: npm run test:integration
        env:
          GRAMMARLY_CLIENT_ID: ${{ secrets.GRAMMARLY_CLIENT_ID }}
          GRAMMARLY_CLIENT_SECRET: ${{ secrets.GRAMMARLY_CLIENT_SECRET }}

Mock-Based Unit Tests

// tests/grammarly-service.test.ts
import { describe, it, expect, vi } from 'vitest';
import { checkDocumentation } from '../src/grammarly-service';

vi.mock('../src/grammarly-client', () => ({
  GrammarlyClient: vi.fn().mockImplementation(() => ({
    checkText: vi.fn().mockResolvedValue({
      overall_score: 87,
      alerts: [
        { type: 'grammar', message: 'Subject-verb disagreement', offset: 12, length: 5, replacements: ['are'] },
        { type: 'clarity', message: 'Consider simplifying', offset: 45, length: 20, replacements: ['use'] },
      ],
      tone: { formal: 0.8, confident: 0.7 },
    }),
    getSuggestions: vi.fn().mockResolvedValue({
      suggestions: [{ text: 'Rephrase for clarity', category: 'engagement' }],
    }),
  })),
}));

describe('Grammarly Service', () => {
  it('checks documentation quality and returns score', async () => {
    const result = await checkDocumentation('The data is ready for review.');
    expect(result.overall_score).toBeGreaterThan(80);
    expect(result.alerts).toHaveLength(2);
  });
});

Integration Tests

// tests/integration/grammarly.integration.test.ts
import { describe, it, expect } from 'vitest';

const hasCredentials = !!process.env.GRAMMARLY_CLIENT_ID;

describe.skipIf(!hasCredentials)('Grammarly Live API', () => {
  it('analyzes text via Text API', async () => {
    const tokenRes = await fetch('https://api.grammarly.com/v1/oauth/token', {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({
        client_id: process.env.GRAMMARLY_CLIENT_ID,
        client_secret: process.env.GRAMMARLY_CLIENT_SECRET,
        grant_type: 'client_credentials',
      }),
    });
    expect(tokenRes.status).toBe(200);
    const { access_token } = await tokenRes.json();
    expect(access_token).toBeDefined();
  });
});

Error Handling

Prerequisites

• CI secret references rather than literal credentials, a sandbox endpoint, and fixtures containing only fictional text.
• Protected branches, retention/redaction assertions, and a rollback mechanism for deployment/configuration the pipeline can influence.

Instructions

1. Run mocked unit tests first, including malformed response, denied consent, retention, and quota cases.
2. Run a bounded sandbox integration with idempotency and prohibit production destinations in CI configuration.
3. Emit aggregate counts, correlation IDs, and policy revisions only; fail for unknown destination, expanded scope, or unredacted log assertion.
4. Canary after protected review, verify synthetic behavior/retention, and restore the last-known-good revision on failure.

Output

Publish a CI receipt with commit SHA, fixture revision, sandbox target, test totals, policy checks, canary outcome, and rollback reference. Exclude text, suggestions, and secrets.

Examples

sha=abc123; fixtures=v5; sandbox=ci-synthetic; tests=18/18; consent=pass; retention=none; canary=not-promoted is a valid pre-production receipt.

Resources

• Grammarly Developer API
• Grammarly Text API Reference
• GitHub Actions Secrets

Next Steps

For deployment, see grammarly-deploy-integration.