function-with-env.test.js

'use strict';
const { existsSync } = require('fs');
const { resolve } = require('path');
const { run, readFile } = require('../../../../utils/test-utils');

describe('function configuration', () => {
    it('should throw when env is not supplied', async () => {
        const { exitCode, stderr, stdout } = await run(__dirname, ['--env']);

        expect(exitCode).toBe(2);
        expect(stderr).toContain("Error: Option '--env <value...>' argument missing");
        expect(stdout).toBeFalsy();
    });

    it('is able to understand a configuration file as a function', async () => {
        const { exitCode, stderr, stdout } = await run(__dirname, ['--env', 'isProd']);

        expect(exitCode).toBe(0);
        expect(stderr).toBeFalsy();
        expect(stdout).toBeTruthy();
        // Should generate the appropriate files
        expect(existsSync(resolve(__dirname, './dist/prod.js'))).toBeTruthy();
    });

    it('is able to understand a configuration file as a function', async () => {
        const { exitCode, stderr, stdout } = await run(__dirname, ['--env', 'isDev']);

        expect(exitCode).toBe(0);
        expect(stderr).toBeFalsy();
        expect(stdout).toBeTruthy();
        // Should generate the appropriate files
        expect(existsSync(resolve(__dirname, './dist/dev.js'))).toBeTruthy();
    });

    it('Supports passing string in env', async () => {
        const { exitCode, stderr, stdout } = await run(__dirname, [
            '--env',
            'environment=production',
            '--env',
            'app.title=Luffy',
            '-c',
            'webpack.env.config.js',
        ]);

        expect(exitCode).toBe(0);
        expect(stderr).toBeFalsy();
        expect(stdout).toBeTruthy();
        // Should generate the appropriate files
        expect(existsSync(resolve(__dirname, './dist/Luffy.js'))).toBeTruthy();
    });

    it('Supports long nested values in env', async () => {
        const { exitCode, stderr, stdout } = await run(__dirname, [
            '--env',
            'file.name.is.this=Atsumu',
            '--env',
            'environment=production',
            '-c',
            'webpack.env.config.js',
        ]);

        expect(exitCode).toBe(0);
        expect(stderr).toBeFalsy();
        expect(stdout).toBeTruthy();
        // Should generate the appropriate files
        expect(existsSync(resolve(__dirname, './dist/Atsumu.js'))).toBeTruthy();
    });

    it('Supports multiple equal in a string', async () => {
        const { exitCode, stderr, stdout } = await run(__dirname, [
            '--env',
            'file=name=is=Eren',
            '--env',
            'environment=multipleq',
            '-c',
            'webpack.env.config.js',
        ]);

        expect(exitCode).toBe(0);
        expect(stderr).toBeFalsy();
        expect(stdout).toBeTruthy();
        // Should generate the appropriate files
        expect(existsSync(resolve(__dirname, './dist/name=is=Eren.js'))).toBeTruthy();
    });

    it('Supports dot at the end', async () => {
        const { exitCode, stderr, stdout } = await run(__dirname, [
            '--env',
            'name.=Hisoka',
            '--env',
            'environment=dot',
            '-c',
            'webpack.env.config.js',
        ]);

        expect(exitCode).toBe(0);
        expect(stderr).toBeFalsy();
        expect(stdout).toBeTruthy();
        // Should generate the appropriate files
        expect(existsSync(resolve(__dirname, './dist/Hisoka.js'))).toBeTruthy();
    });

    it('Supports dot at the end', async () => {
        const { exitCode, stderr, stdout } = await run(__dirname, [
            '--env',
            'name.',
            '--env',
            'environment=dot',
            '-c',
            'webpack.env.config.js',
        ]);

        expect(exitCode).toBe(0);
        expect(stderr).toBeFalsy();
        expect(stdout).toBeTruthy();
        // Should generate the appropriate files
        expect(existsSync(resolve(__dirname, './dist/true.js'))).toBeTruthy();
    });

    it('Supports empty string', async () => {
        const { exitCode, stderr, stdout } = await run(__dirname, ['--env', `foo=''`]);

        expect(exitCode).toBe(0);
        expect(stderr).toBeFalsy();
        expect(stdout).toBeTruthy();
        // Should generate the appropriate files
        expect(existsSync(resolve(__dirname, './dist/empty-string.js'))).toBeTruthy();
    });

    it('is able to understand multiple env flags', async () => {
        const { exitCode, stderr, stdout } = await run(__dirname, ['--env', 'isDev', '--env', 'verboseStats', '--env', 'envMessage']);

        expect(exitCode).toBe(0);
        expect(stderr).toBeFalsy();
        expect(stdout).toBeTruthy();
        // check that the verbose env is respected
        expect(stdout).toContain('LOG from webpack');

        let data;

        try {
            data = await readFile(resolve(__dirname, './dist/dev.js'), 'utf-8');
        } catch (error) {
            expect(error).toBe(null);
        }

        // check if the values from DefinePlugin make it to the compiled code
        expect(data).toContain('env message present');
    });
});