checkout.spec.js

import { lgPromise } from './common.js';
import assert from 'assert';

describe('git checkout', () => {    
    beforeEach(async () => {
        const lg = await lgPromise;
        const FS = lg.FS;
        console.log('cwd', FS.cwd());
    });
    it('should discard changes to a path', async () => {
        const lg = await lgPromise;
        const FS = lg.FS;
        FS.writeFile('/home/web_user/.gitconfig', '[user]\n' +
                    'name = Test User\n' +
                    'email = test@example.com');

        FS.mkdir('test');
        FS.chdir('test');
        lg.callMain(['init', '.']);

        FS.writeFile('test.txt', 'abcdef');
        lg.callMain(['add', 'test.txt']);
        lg.callMain(['commit', '-m', 'test commit']);
        assert.equal(FS.readFile('test.txt', {encoding: 'utf8'}), 'abcdef');
        FS.writeFile('test.txt', 'abcdefg');
        lg.callMain(['checkout', '--', 'test.txt']);
        lg.callMain(['status']);
        assert.equal(FS.readFile('test.txt', {encoding: 'utf8'}), 'abcdef',
                'expecting file content to be reverted');
    });
    it('should show error message if no path arguments are given', async () => {
        const lg = await lgPromise;
        const FS = lg.FS;

        FS.writeFile('/home/web_user/.gitconfig', '[user]\n' +
                    'name = Test User\n' +
                    'email = test@example.com');
                
        FS.mkdir('test99');
        FS.chdir('test99');
        lg.callMain(['init', '.']);

        FS.writeFile('test.txt', 'abcdef');
        lg.callMain(['add', 'test.txt']);
        
        lg.callMain(['commit', '-m', 'test commit']);
        assert.equal(FS.readFile('test.txt', {encoding: 'utf8'}), 'abcdef');

        FS.writeFile('test.txt', 'abcdefg');

        let errormessage;
        try {
            lg.callWithOutput(['checkout', '--']);
        } catch (err) {
            errormessage = err;
        }
        assert.equal(errormessage, '1: error: no paths specified');
    });
});