add tests that use the compiler

.gitignore

@@ -1,3 +1,6 @@
+# Tests
+test/output
+
 # Logs
 logs
 *.log

test/compiler.test.js

@@ -0,0 +1,93 @@
+/* global jest, describe, test, expect, beforeEach */
+
+const { resolve } = require('path')
+const webpack = require('webpack')
+const { readFileSync, rmdirSync } = require('fs')
+
+const Src = require('../src')
+const Dist = require('../dist')
+
+const envEmpty = resolve(__dirname, './envs/.empty')
+const envEmptyExample = resolve(__dirname, './envs/.empty.example')
+const envSimple = resolve(__dirname, './envs/.simple')
+const envSimpleExample = resolve(__dirname, './envs/.simple.example')
+const envOneEmpty = resolve(__dirname, './envs/.oneempty')
+const envOneEmptyExample = resolve(__dirname, './envs/.oneempty.example')
+const envMissingOne = resolve(__dirname, './envs/.missingone')
+const envMissingOneExample = resolve(__dirname, './envs/.missingone.example')
+const envSystemvars = resolve(__dirname, './envs/.systemvars')
+const envSystemvarsExample = resolve(__dirname, './envs/.systemvars.example')
+const envExpanded = resolve(__dirname, './envs/.expanded')
+const envDefaults = resolve(__dirname, './envs/.defaults')
+
+const getConfig = (target, plugin) => ({
+ mode: 'development',
+ devtool: false,
+ target,
+ entry: resolve(__dirname, './fixtures/index'),
+ output: {
+ path: resolve(__dirname, `./output/${target}`)
+ },
+ plugins: [plugin]
+})
+
+const versions = [
+ ['Source', Src.default],
+ ['Dist', Dist.default]
+]
+
+describe.each(versions)('%s', (_, DotenvPlugin) => {
+ describe('process.env stubbing', () => {
+ const expectToBeStubbed = (result) => {
+ expect(result).toMatch('const test = "testing"')
+ expect(result).toMatch('const test2 = "MISSING_ENV_VAR".TEST2')
+ expect(result).toMatch('const nodeEnv = "development"')
+ expect(result).toMatch('const mongolabUser = "MISSING_ENV_VAR".MONGOLAB_USER')
+ }
+
+ const expectNotToBeStubbed = (result) => {
+ expect(result).toMatch('const test = "testing"')
+ expect(result).toMatch('const test2 = process.env.TEST2')
+ expect(result).toMatch('const nodeEnv = "development"')
+ expect(result).toMatch('const mongolabUser = process.env.MONGOLAB_USER')
+ }
+
+ const plugin = new DotenvPlugin({ path: envSimple })
+ const cases = [
+ ['web', getConfig('web', plugin), true],
+ ['es5', getConfig('es5', plugin), true],
+ ['es2020', getConfig('es2020', plugin), true],
+ ['electron-renderer', getConfig('electron-renderer', plugin), true],
+ ['electron9-renderer', getConfig('electron9-renderer', plugin), true],
+ ['electron-preload', getConfig('electron-preload', plugin), true],
+ ['node', getConfig('node', plugin), false],
+ ['node14', getConfig('node14', plugin), false],
+ ['electron-main', getConfig('electron-main', plugin), false],
+ ['electron9-main', getConfig('electron9-main', plugin), false]
+ ]
+
+ beforeEach(() => {
+ rmdirSync(resolve(__dirname, 'output'), { recursive: true })
+ })
+
+ test.each(cases)('%s', (target, config, shouldStub, done) => {
+ webpack(config, (err, stats) => {
+ expect(err).toBeNull()
+ expect(stats.compilation.errors).toHaveLength(0)
+
+ const result = readFileSync(
+ resolve(__dirname, `./output/${target}/main.js`),
+ { encoding: 'utf-8' }
+ )
+
+ if (shouldStub) {
+ expectToBeStubbed(result)
+ } else {
+ expectNotToBeStubbed(result)
+ }
+
+ done()
+ })
+ })
+ })
+})

test/fixtures/index.js

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+/* eslint-disable no-unused-vars */
+const test = process.env.TEST
+const test2 = process.env.TEST2
+const nodeEnv = process.env.NODE_ENV
+const mongolabUser = process.env.MONGOLAB_USER
+
+export default {
+ test,
+ test2,
+ nodeEnv,
+ mongolabUser
+}