@forestadmin-experimental/agent-nodejs-testing

Agent Node JS Testing Library

This library provides a set of utilities for testing Node JS agents. It's only available for Node JS agents.

It is in alpha version and is subject to breaking changes. For the moment, it only provides an incomplete set of utilities for integration and unit testing, but it will be extended in the future.

Installation

npm install @forestadmin-experimental/agent-nodejs-testing

or for Yarn users

yarn add @forestadmin-experimental/agent-nodejs-testing

Integration Tests - Recommended Testing Strategy

Setup

const { createTestableAgent } = require('@forestadmin-experimental/agent-nodejs-testing');

// customizations to apply to your agent
export function addAgentCustomizations(agent) {
  agent.addDataSource(createSequelizeDataSource(connection));
}

// setup and start a testable agent
export async function setupAndStartTestableAgent() {
  // if you have a database, or a server to start, do it here
  // ...

  // create a testable agent with the customizations
  const testableAgent = await createTestableAgent(addAgentCustomizations);

  // start the testable agent
  await testableAgent.start();

  return testableAgent;
}

Usage

describe('billing collection', () => {
  let testableAgent;

  beforeAll(async () => {
    testableAgent = await setupAndStartTestableAgent();
  });

  afterAll(async () => {
    await testableAgent?.stop();
  });

  it('should return all the records of the billing collection', async () => {
    // create records in the database
    // ...

    // call the billing collection from the agent to get the records
    const result = await testableAgent.collection('billing').list();

    // check the result
    expect(result).toHaveLength(2);
  });
});

Examples

Please check the example folder for more examples.

How it works

The createTestableAgent function creates a testable agent that can be used to test your agent. The testable agent is a wrapper around your agent that allows you to start and stop it, and to call its collections, actions, charts etc. It calls the agent by http, so it's a real integration test. It does exactly what the frontend does when it calls your agent. All the authentication part is mocked, so it doesn't call the forestadmin servers. It can be run in standalone in your CI for example.

flowchart LR
 testableAgent(testable agent)<-->|HTTP|agent
 agent(agent with customizations)<-->DATA
 agent-.never call.-server(forestadmin server)

Unit Tests

WIP