Use of should.js with Coffeescript

Question

I want to use should.js together with mocha in a Node.js projects which I write in Coffeescript.

In pure Javascript a expression in should.js is like

(function(){
  throw new Error('fail');
}).should.throw();

Now I want to write the same expression in Coffeescript. Something like

object.function().should.throw

But that compiles to

object["function"]().should["throw"];

Where is my mistake in my Coffescript code?

This is just a placeholder. The code I use is `testModel = new DBModel() testModel.get().should.throw()` — rotespferd, Feb 09 '13 at 13:50

score 2 · Answer 1 · answered Feb 09 '13 at 13:40

2

I don't know why you write object.function() in your coffeescript. I think the coffeescript to compile to your JS should be:

(->
  throw new Error('fail')
).should.throw()

answered Feb 09 '13 at 13:40

tmaximini

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No, there is the same problem. This compiles to `(function() { throw new Error('fail'); }).should["throw"]();` – rotespferd Feb 09 '13 at 13:53
@rotespferd: Isn't that exactly what you want? – Bergi Feb 09 '13 at 13:55

score 1 · Accepted Answer · answered Feb 09 '13 at 13:57

1

The code I use is testModel = new DBModel() testModel.get().should.throw()

As far as I can see from the pure-JS-example, you should not invoke the function that you want to test - it's result will likely not have the should method. Use this instead:

testModel = new DBModel();
testModel.get.should.throw();

answered Feb 09 '13 at 13:57

Bergi

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Thanks, you are totally right. `testModel.get.should.throw` works fine. – rotespferd Feb 09 '13 at 14:03

Use of should.js with Coffeescript

2 Answers2