Formatting objects in chai.expect errors

Question

When test fails, where I'm comparing two objects using expect(x).to.deep.equal(y), I'd like to see the actual values in my browser test report. Instead, I see something like this:

AssertionError: expected { Object (x, y, ...) } to deeply equal { Object (x, y, ...) }

So it doesn't really show anything useful.

Is there a way to customize how chai.js formats these objects?

Answer 1

You can now configure the max length before an object gets truncated as per the docs:

chai.config.truncateThreshold = 0; // disable truncating