Is it supported to pass the second argument into the toBe matcher of Jasmine?

Question

I found this code snippet from Angular's document, but cannot find this usage from Jasmine's docs. Is this really a supported feature? I just want to make sure that if I use this feature it will not break unexpectedly when upgrading to a newer minor/patch version.

expect(masterService.getValue())
.toBe(stubValue, 'service returned stub value');

Answer 1

The supported method since 3.3 is withContext: https://jasmine.github.io/api/edge/matchers.html#withContext

expect(masterService.getValue()).withContext('service returned stub value')
.toBe(stubValue);