Nuxt/packages/cli/test/unit/dev.test.js

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import { consola, mockNuxt, mockBuilder, mockGetNuxtConfig } from '../utils'
describe('dev', () => {
let dev
beforeAll(async () => {
dev = await import('../../src/commands/dev')
dev = dev.default
})
afterEach(() => {
jest.clearAllMocks()
})
test('is function', () => {
expect(typeof dev).toBe('function')
})
test('reloads on fileChanged hook', async () => {
const Nuxt = mockNuxt()
const Builder = mockBuilder()
await dev()
expect(consola.error).not.toHaveBeenCalled()
expect(Builder.prototype.build).toHaveBeenCalled()
expect(Nuxt.prototype.listen).toHaveBeenCalled()
expect(Nuxt.prototype.showReady).toHaveBeenCalled()
expect(Builder.prototype.watchServer).toHaveBeenCalled()
jest.clearAllMocks()
const builder = new Builder()
builder.nuxt = new Nuxt()
await Nuxt.fileChangedHook(builder)
expect(consola.debug).toHaveBeenCalled()
expect(Nuxt.prototype.clearHook).toHaveBeenCalled()
expect(Builder.prototype.unwatch).toHaveBeenCalled()
expect(Builder.prototype.build).toHaveBeenCalled()
expect(Nuxt.prototype.close).toHaveBeenCalled()
expect(Nuxt.prototype.listen).toHaveBeenCalled()
expect(Nuxt.prototype.showReady).not.toHaveBeenCalled()
expect(Builder.prototype.watchServer).toHaveBeenCalled()
expect(consola.error).not.toHaveBeenCalled()
})
test('catches build error', async () => {
const Nuxt = mockNuxt()
const Builder = mockBuilder()
await dev()
jest.clearAllMocks()
// Test error on second build so we cover oldInstance stuff
const builder = new Builder()
builder.nuxt = new Nuxt()
Builder.prototype.build = jest.fn().mockImplementationOnce(() => Promise.reject(new Error('Build Error')))
await Nuxt.fileChangedHook(builder)
expect(Nuxt.prototype.close).toHaveBeenCalled()
expect(consola.error).toHaveBeenCalledWith(new Error('Build Error'))
})
test('catches watchServer error', async () => {
const Nuxt = mockNuxt()
const Builder = mockBuilder()
await dev()
jest.clearAllMocks()
const builder = new Builder()
builder.nuxt = new Nuxt()
Builder.prototype.watchServer = jest.fn().mockImplementationOnce(() => Promise.reject(new Error('watchServer Error')))
await Nuxt.fileChangedHook(builder)
expect(consola.error).toHaveBeenCalledWith(new Error('watchServer Error'))
expect(Builder.prototype.watchServer).toHaveBeenCalledTimes(2)
})
test('catches error on hook error', async () => {
const Nuxt = mockNuxt()
const Builder = mockBuilder()
await dev()
jest.clearAllMocks()
mockGetNuxtConfig().mockImplementationOnce(() => {
throw new Error('Config Error')
})
const builder = new Builder()
builder.nuxt = new Nuxt()
await Nuxt.fileChangedHook(builder)
expect(consola.error).toHaveBeenCalledWith(new Error('Config Error'))
expect(Builder.prototype.watchServer).toHaveBeenCalledTimes(1)
})
test('catches error on startDev', async () => {
mockNuxt({
listen: jest.fn().mockImplementation(() => {
throw new Error('Listen Error')
})
})
mockBuilder()
await dev()
expect(consola.error).toHaveBeenCalledWith(new Error('Listen Error'))
})
})