Simulating stream `error` event for tests

Question

I'm using the latest istanbul + jasmine-node to write all my test scripts.

In a few places I have a Readable stream that may emit error event, and I have no idea how to simulate such event in a test environment, to provide code coverage.

Can anybody suggest an idea of how to approach this, please?

Why not just emit an error event on the stream?: `stream.emit('error', new Error('OOPS'));` — mscdex, Oct 18 '15 at 05:45
@mscdex, I have tried it, and it worked. Thank you! Do you want to publish it as an answer? — vitaly-t, Oct 18 '15 at 06:01

score 17 · Accepted Answer · answered Oct 18 '15 at 07:06

17

It should just be as simple as emitting an error directly on the object:

stream.emit('error', new Error('OOPS'));

answered Oct 18 '15 at 07:06

mscdex

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Simulating stream `error` event for tests

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