react/scripts/shared/__tests__/evalToString-test.js
Jack Hou e8e62ebb59 use different eslint config for es6 and es5 (#11794)
* use different eslint config for es6 and es5

* remove confusing eslint/baseConfig.js & add more eslint setting for es5, es6

* more clear way to run eslint on es5 & es6 file

* seperate ESNext, ES6, ES6 path, and use different lint config

* rename eslint config file & update eslint rules

* Undo yarn.lock changes

* Rename a file

* Remove unnecessary exceptions

* Refactor a little bit

* Refactor and tweak the logic

* Minor issues
2017-12-11 15:52:46 +00:00

40 lines
1.2 KiB
JavaScript

/**
* Copyright (c) 2013-present, Facebook, Inc.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
'use strict';
const evalToString = require('../evalToString');
const babylon = require('babylon');
const parse = source =>
babylon.parse(`(${source});`).program.body[0].expression; // quick way to get an exp node
const parseAndEval = source => evalToString(parse(source));
describe('evalToString', () => {
it('should support StringLiteral', () => {
expect(parseAndEval(`'foobar'`)).toBe('foobar');
expect(parseAndEval(`'yowassup'`)).toBe('yowassup');
});
it('should support string concat (`+`)', () => {
expect(parseAndEval(`'foo ' + 'bar'`)).toBe('foo bar');
});
it('should throw when it finds other types', () => {
expect(() => parseAndEval(`'foo ' + true`)).toThrowError(
/Unsupported type/
);
expect(() => parseAndEval(`'foo ' + 3`)).toThrowError(/Unsupported type/);
expect(() => parseAndEval(`'foo ' + null`)).toThrowError(
/Unsupported type/
);
expect(() => parseAndEval(`'foo ' + undefined`)).toThrowError(
/Unsupported type/
);
});
});