使用node.js导出类
我在文件jasmine-node中运行了以下测试代码 bob_test.spec.js
require('./bob');describe("Bob", function() {
var bob = new Bob();
it("stating something", function() {
var result = bob.hey('Tom-ay-to, tom-aaaah-to.');
expect(result).toEqual('Whatever');
});
});
为了使测试通过,我在名为的文件中编写了以下生产代码 bob.js
"use strict";var Bob = function() {
}
Bob.prototype.hey = function (text) {
return "Whatever";
}
module.exports = Bob;
当我运行测试时-使用jasmine-node .
-得到以下F
Failures:1) Bob encountered a declaration exception
Message:
ReferenceError: Bob is not defined
Stacktrace:
ReferenceError: Bob is not defined
at null.<anonymous> (/Users/matt/Code/oss/deliberate-practice/exercism/javascript/bob/bob_test.spec.js:4:17)
at Object.<anonymous> (/Users/matt/Code/oss/deliberate-practice/exercism/javascript/bob/bob_test.spec.js:3:1)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Module.require (module.js:364:17)
at require (module.js:380:17)
Finished in 0.02 seconds
1 test, 1 assertion, 1 failure, 0 skipped
根据我对Javascript的了解,我觉得这应该可行。node.js对构造函数和模块导出有何不同之处,使它无法正常工作,我认为应该这样做?
回答:
require返回一个对象,您应该将其存储在某个地方
var Bob = require('./bob');
然后使用这个对象
var bobInstance = new Bob();
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