Unit Test

According to Eden Treaty config and Unit Test, we may pass an Elysia instance to Eden Treaty directly to interact with Elysia server directly without sending a network request.

We may use this patterns to create a unit test with end-to-end type safety and type-level test all at once.

// test/index.test.ts
import { describe, expect, it } from 'bun:test'
import { Elysia } from 'elysia'
import { treaty } from '@elysiajs/eden'

const app = new Elysia().get('/hello', 'hi')
const api = treaty(app)

describe('Elysia', () => {
    it('return a response', async () => {
        const { data } = await api.hello.get()

        expect(data).toBe('hi')

    })
})

Type safety test

To perform a type safety test, simply run tsc to test folders.

tsc --noEmit test/**/*.ts

This is useful to ensure type integrity for both client and server, especially during migrations.