javascript - 即使抛出错误，Jasmine toThrow 也不起作用

Question

即使抛出错误，此代码也会失败。

it('should throw error when foo config value is falsey', (done) => {
  const config = { foo: null, bar: 'some-name' };
  expect(quux.withConfig(config).load('*', (err, inst) => { done(); })).toThrow();
});

我也尝试过这个

it('should throw error when foo config value is falsey', (done) => {
  const config = { foo: null, bar: 'some-name' };
  expect(SelfServiceCompletedJobStore.withConfig(config).load('*', (err, inst) => { })).toThrow();
  done();
});

错误消息:

should throw error when foo config value is falsey
  - Error: Requires a non-empty foo:String

Answer 1

你应该将一个函数传递给expect(...)。代码如下:

expect(quux.withConfig(config).load('*', (err, inst) => { done();    })).toThrow();

实际上正在尝试将调用结果传递给expect(...)，

改用匿名函数:

expect(function(){ 
    quux.withConfig(config).load('*', (err, inst) => { done(); });   
}).toThrow();