Could we JSON stringify instead of printing [object Object] on failing tests?

[Wizek]

Current behaviour:

Then clause `this.ko.contextFor(this.el.find('div')[0]).$data === this.koRootContext.$data` failed by returning false

    This comparison was detected:
      this.ko.contextFor(this.el.find('div')[0]).$data === this.koRootContext.$data
      [object Object] === [object Object]

Desired behaviour:

Then clause `this.ko.contextFor(this.el.find('div')[0]).$data === this.koRootContext.$data` failed by returning false

    This comparison was detected:
      this.ko.contextFor(this.el.find('div')[0]).$data === this.koRootContext.$data
      {a: 1} === {a: 2}

[searls]

Sounds good to me. It would need try/catch for cyclic failures and fall back on current behavior. Also, since === is an identity comparator, I'm not really sure what good it would do if two things looked identical but had different identities.

Currently the lib will warn you when two objects fail === but would pass the toEqual matcher