How can I test error handing without try-- catch

Question

I am writing code that validates texts. This is how I test it. But I don't want to use try--catch in unit testing. Please give me a better way to do it.

it('Testing if hook errors on invalid description.', async () => {
      try {
        workRequest.requestor = 'John';
        workRequest.description = 1;
        result = await app.service('dummy').create(workRequest);
      } catch (error) {
        assert.equal(error.errors.description, 'Description is must be a string');
      }
    });

Naor Tedgi · Accepted Answer · 2019-04-29 16:46:02Z

3

what you looking for is somthing like this should.throws almost all tests framework supports this API

for example :

shouldjs

https://shouldjs.github.io/#should-throws

mocha

https://mochajs.org/#bdd

and also

https://nodejs.org/api/assert.html#assert_assert_throws_fn_error_message

 it('Testing if hook errors on invalid description.', async () => {
        assert.throws(  () =>  {
            workRequest.requestor = 'John';
            workRequest.description = 1;
            result = await app.service('dummy').create(workRequest);
        },
  err 
);

edited Apr 29, 2019 at 16:46

answered Apr 29, 2019 at 16:38

Naor Tedgi

5,7473 gold badges29 silver badges59 bronze badges

Sign up to request clarification or add additional context in comments.

4 Comments

Matthew Over a year ago

I'm not a JavaScript expert, but I've never seen the syntax of passing in a code block like that, does not have to be () => { ... } instead of { ... }?

Naor Tedgi Over a year ago

you are right thank you @Matthew . i updated my code

Minh Ngo Over a year ago

How I can know it sends a correct error message? Since I need to validate multi-elements

Naor Tedgi Over a year ago

Just pass to err parameter the expected object

Collectives™ on Stack Overflow

How can I test error handing without try-- catch

1 Answer 1

4 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

4 Comments

Your Answer

Sign up or log in

Post as a guest

Related