twenty/packages/twenty-docs/developers/extend/apps/operations/testing.mdx

---
title: Testing
description: Vitest setup, integration tests against a real Twenty server, type checking, and CI with GitHub Actions.
icon: "flask"
---

The SDK provides programmatic APIs that let you build, deploy, install, and uninstall your app from test code. Combined with [Vitest](https://vitest.dev/) and the typed API clients, you can write integration tests that verify your app works end-to-end against a real Twenty server.

## Using npm packages

You can install and use any npm package in your app. Both logic functions and front components are bundled with [esbuild](https://esbuild.github.io/), which inlines all dependencies into the output — no `node_modules` are needed at runtime.

### Installing a package

```bash filename="Terminal"
yarn add axios
```

Then import it in your code:

```ts src/logic-functions/fetch-data.ts
import { defineLogicFunction } from 'twenty-sdk/define';
import axios from 'axios';

const handler = async (): Promise<any> => {
  const { data } = await axios.get('https://api.example.com/data');

  return { data };
};

export default defineLogicFunction({
  universalIdentifier: '...',
  name: 'fetch-data',
  description: 'Fetches data from an external API',
  timeoutSeconds: 10,
  handler,
});
```

The same works for front components:

```tsx src/front-components/chart.tsx
import { defineFrontComponent } from 'twenty-sdk/define';
import { format } from 'date-fns';

const DateWidget = () => {
  return <p>Today is {format(new Date(), 'MMMM do, yyyy')}</p>;
};

export default defineFrontComponent({
  universalIdentifier: '...',
  name: 'date-widget',
  component: DateWidget,
});
```

### How bundling works

The build step uses esbuild to produce a single self-contained file per logic function and per front component. All imported packages are inlined into the bundle.

**Logic functions** run in a Node.js environment. Node built-in modules (`fs`, `path`, `crypto`, `http`, etc.) are available and do not need to be installed.

**Front components** run in a Web Worker. Node built-in modules are **not** available — only browser APIs and npm packages that work in a browser environment.

Both environments have `twenty-client-sdk/core` and `twenty-client-sdk/metadata` available as pre-provided modules — these are not bundled but resolved at runtime by the server.

## Setup

The scaffolded app already includes Vitest. If you set it up manually, install the dependencies:

```bash filename="Terminal"
yarn add -D vitest vite-tsconfig-paths
```

Create a `vitest.config.ts` at the root of your app:

```ts vitest.config.ts
import tsconfigPaths from 'vite-tsconfig-paths';
import { defineConfig } from 'vitest/config';

export default defineConfig({
  plugins: [
    tsconfigPaths({
      projects: ['tsconfig.spec.json'],
      ignoreConfigErrors: true,
    }),
  ],
  test: {
    testTimeout: 120_000,
    hookTimeout: 120_000,
    include: ['src/**/*.integration-test.ts'],
    setupFiles: ['src/__tests__/setup-test.ts'],
    env: {
      TWENTY_API_URL: 'http://localhost:2020',
      TWENTY_API_KEY: 'your-api-key',
    },
  },
});
```

Create a setup file that verifies the server is reachable before tests run:

```ts src/__tests__/setup-test.ts
import * as fs from 'fs';
import * as os from 'os';
import * as path from 'path';
import { beforeAll } from 'vitest';

const TWENTY_API_URL = process.env.TWENTY_API_URL ?? 'http://localhost:2020';
const TEST_CONFIG_DIR = path.join(os.tmpdir(), '.twenty-sdk-test');

beforeAll(async () => {
  // Verify the server is running
  const response = await fetch(`${TWENTY_API_URL}/healthz`);

  if (!response.ok) {
    throw new Error(
      `Twenty server is not reachable at ${TWENTY_API_URL}. ` +
        'Start the server before running integration tests.',
    );
  }

  // Write a temporary config for the SDK
  fs.mkdirSync(TEST_CONFIG_DIR, { recursive: true });

  fs.writeFileSync(
    path.join(TEST_CONFIG_DIR, 'config.json'),
    JSON.stringify({
      remotes: {
        local: {
          apiUrl: process.env.TWENTY_API_URL,
          apiKey: process.env.TWENTY_API_KEY,
        },
      },
      defaultRemote: 'local',
    }, null, 2),
  );
});
```

## Programmatic SDK APIs

The `twenty-sdk/cli` subpath exports functions you can call directly from test code:

| Function | Description |
|----------|-------------|
| `appBuild` | Build the app and optionally pack a tarball |
| `appDeploy` | Upload a tarball to the server |
| `appInstall` | Install the app on the active workspace |
| `appUninstall` | Uninstall the app from the active workspace |

Each function returns a result object with `success: boolean` and either `data` or `error`.

## Writing an integration test

Here is a full example that builds, deploys, and installs the app, then verifies it appears in the workspace:

```ts src/__tests__/app-install.integration-test.ts
import { APPLICATION_UNIVERSAL_IDENTIFIER } from 'src/application-config';
import { appBuild, appDeploy, appInstall, appUninstall } from 'twenty-sdk/cli';
import { MetadataApiClient } from 'twenty-client-sdk/metadata';
import { afterAll, beforeAll, describe, expect, it } from 'vitest';

const APP_PATH = process.cwd();

describe('App installation', () => {
  beforeAll(async () => {
    const buildResult = await appBuild({
      appPath: APP_PATH,
      tarball: true,
      onProgress: (message: string) => console.log(`[build] ${message}`),
    });

    if (!buildResult.success) {
      throw new Error(`Build failed: ${buildResult.error?.message}`);
    }

    const deployResult = await appDeploy({
      tarballPath: buildResult.data.tarballPath!,
      onProgress: (message: string) => console.log(`[deploy] ${message}`),
    });

    if (!deployResult.success) {
      throw new Error(`Deploy failed: ${deployResult.error?.message}`);
    }

    const installResult = await appInstall({ appPath: APP_PATH });

    if (!installResult.success) {
      throw new Error(`Install failed: ${installResult.error?.message}`);
    }
  });

  afterAll(async () => {
    await appUninstall({ appPath: APP_PATH });
  });

  it('should find the installed app in the workspace', async () => {
    const metadataClient = new MetadataApiClient();

    const result = await metadataClient.query({
      findManyApplications: {
        id: true,
        name: true,
        universalIdentifier: true,
      },
    });

    const installedApp = result.findManyApplications.find(
      (app: { universalIdentifier: string }) =>
        app.universalIdentifier === APPLICATION_UNIVERSAL_IDENTIFIER,
    );

    expect(installedApp).toBeDefined();
  });
});
```

## Running tests

Make sure your local Twenty server is running, then:

```bash filename="Terminal"
yarn test
```

Or in watch mode during development:

```bash filename="Terminal"
yarn test:watch
```

## Type checking

You can also run type checking on your app without running tests:

```bash filename="Terminal"
yarn twenty dev:typecheck
```

This runs `tsc --noEmit` and reports any type errors.

## CI with GitHub Actions

The scaffolder generates a ready-to-use GitHub Actions workflow at `.github/workflows/ci.yml`. It runs your integration tests automatically on every push to `main` and on pull requests.

The workflow:

1. Checks out your code
2. Spins up a temporary Twenty server using the `twentyhq/twenty/.github/actions/spawn-twenty-docker-image` action
3. Installs dependencies with `yarn install --immutable`
4. Runs `yarn test` with `TWENTY_API_URL` and `TWENTY_API_KEY` injected from the action outputs

```yaml .github/workflows/ci.yml
name: CI

on:
  push:
    branches:
      - main
  pull_request: {}

env:
  TWENTY_VERSION: latest

jobs:
  test:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Spawn Twenty instance
        id: twenty
        uses: twentyhq/twenty/.github/actions/spawn-twenty-docker-image@main
        with:
          twenty-version: ${{ env.TWENTY_VERSION }}
          github-token: ${{ secrets.GITHUB_TOKEN }}

      - name: Enable Corepack
        run: corepack enable

      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version-file: '.nvmrc'
          cache: 'yarn'

      - name: Install dependencies
        run: yarn install --immutable

      - name: Run integration tests
        run: yarn test
        env:
          TWENTY_API_URL: ${{ steps.twenty.outputs.server-url }}
          TWENTY_API_KEY: ${{ steps.twenty.outputs.access-token }}
```

You don't need to configure any secrets — the `spawn-twenty-docker-image` action starts an ephemeral Twenty server directly in the runner and outputs the connection details. The `GITHUB_TOKEN` secret is provided automatically by GitHub.

To pin a specific Twenty version instead of `latest`, change the `TWENTY_VERSION` environment variable at the top of the workflow.