125 lines
4 KiB
JavaScript
125 lines
4 KiB
JavaScript
/* eslint-env jest */
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import { join } from 'path'
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import loadConfig from 'next/dist/next-server/server/config'
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import { PHASE_DEVELOPMENT_SERVER } from 'next/constants'
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const pathToConfig = join(__dirname, '_resolvedata', 'without-function')
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const pathToConfigFn = join(__dirname, '_resolvedata', 'with-function')
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describe('config', () => {
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it('Should get the configuration', () => {
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const config = loadConfig(PHASE_DEVELOPMENT_SERVER, pathToConfig)
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expect(config.customConfig).toBe(true)
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})
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it('Should pass the phase correctly', () => {
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const config = loadConfig(PHASE_DEVELOPMENT_SERVER, pathToConfigFn)
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expect(config.phase).toBe(PHASE_DEVELOPMENT_SERVER)
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})
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it('Should pass the defaultConfig correctly', () => {
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const config = loadConfig(PHASE_DEVELOPMENT_SERVER, pathToConfigFn)
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expect(config.defaultConfig).toBeDefined()
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})
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it('Should assign object defaults deeply to user config', () => {
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const config = loadConfig(PHASE_DEVELOPMENT_SERVER, pathToConfigFn)
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expect(config.distDir).toEqual('.next')
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expect(config.onDemandEntries.maxInactiveAge).toBeDefined()
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})
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it('Should pass the customConfig correctly', () => {
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const config = loadConfig(PHASE_DEVELOPMENT_SERVER, null, {
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customConfig: true,
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})
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expect(config.customConfig).toBe(true)
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})
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it('Should not pass the customConfig when it is null', () => {
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const config = loadConfig(PHASE_DEVELOPMENT_SERVER, null, null)
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expect(config.webpack).toBe(null)
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})
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it('Should assign object defaults deeply to customConfig', () => {
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const config = loadConfig(PHASE_DEVELOPMENT_SERVER, null, {
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customConfig: true,
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onDemandEntries: { custom: true },
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})
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expect(config.customConfig).toBe(true)
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expect(config.onDemandEntries.maxInactiveAge).toBeDefined()
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})
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it('Should allow setting objects which do not have defaults', () => {
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const config = loadConfig(PHASE_DEVELOPMENT_SERVER, null, {
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bogusSetting: { custom: true },
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})
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expect(config.bogusSetting).toBeDefined()
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expect(config.bogusSetting.custom).toBe(true)
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})
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it('Should override defaults for arrays from user arrays', () => {
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const config = loadConfig(PHASE_DEVELOPMENT_SERVER, null, {
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pageExtensions: ['.bogus'],
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})
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expect(config.pageExtensions).toEqual(['.bogus'])
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})
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it('Should throw when an invalid target is provided', () => {
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expect(() => {
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loadConfig(
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PHASE_DEVELOPMENT_SERVER,
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join(__dirname, '_resolvedata', 'invalid-target')
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)
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}).toThrow(/Specified target is invalid/)
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})
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it('Should pass when a valid target is provided', () => {
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const config = loadConfig(
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PHASE_DEVELOPMENT_SERVER,
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join(__dirname, '_resolvedata', 'valid-target')
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)
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expect(config.target).toBe('serverless')
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})
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it('Should throw an error when next.config.js is not present', () => {
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expect(() =>
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loadConfig(
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PHASE_DEVELOPMENT_SERVER,
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join(__dirname, '_resolvedata', 'typescript-config')
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)
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).toThrow(
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/Configuring Next.js via .+ is not supported. Please replace the file with 'next.config.js'/
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)
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})
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it('Should not throw an error when two versions of next.config.js are present', () => {
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const config = loadConfig(
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PHASE_DEVELOPMENT_SERVER,
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join(__dirname, '_resolvedata', 'js-ts-config')
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)
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expect(config.__test__ext).toBe('js')
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})
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it('Should ignore configs set to `undefined`', () => {
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const config = loadConfig(PHASE_DEVELOPMENT_SERVER, null, {
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target: undefined,
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devIndicators: {
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autoPrerender: undefined,
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},
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})
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expect(config.target).toBe('server')
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expect(config.devIndicators.autoPrerender).toBe(true)
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})
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it('Should ignore configs set to `null`', () => {
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const config = loadConfig(PHASE_DEVELOPMENT_SERVER, null, {
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target: null,
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devIndicators: {
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autoPrerender: null,
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},
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})
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expect(config.target).toBe('server')
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expect(config.devIndicators.autoPrerender).toBe(true)
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})
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})
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