Throw error not working

Hi,

I am trying to catch the error which my script throws in my tests but chai doesnt seem to accept. Following is my code:

config = null; // I am checking for null in the code and throwing an error
expect(() => script.run(cap, mock, config)).to.throw(/No configuration has been supplied/);

I googled and tried various options but still the same. Any help with be highly appreciated.

Cheers!

[meeber]

If the thrown error is being caught in a try, then it would not be caught by Chai’s .throw assertion.

[meeber]

So right now your code prints the error to console and then swallows the error so that the rest of your program continues on unaware that an error even occurred. Is it your intention for the error to be swallowed in this way after being logged?

If not, then you’d want something like this:

try {
  run(...);
} catch (e) {
  someSynchronousLoggingCall();
  throw e;
}

In the above case, the Chai .throw assertion would work as expected.

If it is your intention to swallow the error after logging it, then your best bet would probably be to create a logging module, and then stub out the logging method with something like Sinon , and then assert that the stubbed logging method was called with the error.