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next.js/test/isolated/config.test.js

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/* global describe, it, expect */
import {join} from 'path'
import getConfig, {loadConfig} from '../../dist/server/config'
import {PHASE_DEVELOPMENT_SERVER} from '../../dist/lib/constants'
const pathToConfig = join(__dirname, '_resolvedata', 'without-function')
const pathToConfigFn = join(__dirname, '_resolvedata', 'with-function')
describe('config', () => {
it('Should get the configuration', () => {
const config = loadConfig(PHASE_DEVELOPMENT_SERVER, pathToConfig)
expect(config.customConfig).toBe(true)
})
it('Should pass the phase correctly', () => {
const config = loadConfig(PHASE_DEVELOPMENT_SERVER, pathToConfigFn)
expect(config.phase).toBe(PHASE_DEVELOPMENT_SERVER)
})
it('Should pass the defaultConfig correctly', () => {
const config = loadConfig(PHASE_DEVELOPMENT_SERVER, pathToConfigFn)
expect(config.defaultConfig).toBeDefined()
})
it('Should pass the customConfig correctly', () => {
const config = loadConfig(PHASE_DEVELOPMENT_SERVER, null, {customConfig: true})
expect(config.customConfig).toBe(true)
})
it('Should not pass the customConfig when it is null', () => {
const config = loadConfig(PHASE_DEVELOPMENT_SERVER, null, null)
expect(config.webpack).toBe(null)
})
it('Should cache on getConfig', () => {
const config = getConfig(PHASE_DEVELOPMENT_SERVER, pathToConfig)
const config2 = getConfig(PHASE_DEVELOPMENT_SERVER, pathToConfig, {extraConfig: true}) // won't add extraConfig because it's cached.
expect(config === config2).toBe(true)
})
})