Feature Request: assert that key is present but ignore value

[naamancurtis]

I was wondering if you'd be open to including some kind of flag within the macro that indicates that it should check that the key exists, but ignores the value (or just accepts any value).

The main reason for doing this would be for values such as decimals where checking for exact equality isn't likely to work eg:

json atoms at path ".price" are not equal:
    expected:
        2.97
    actual:
        2.9699999999999998

[davidpdrsn]

In those cases I usually try and access the element with something like json["foo"]["bar"][1337] without any assertions since that'll panic if the key isn't there. Of course not as elegant but without a custom json! macro I don't think a better solution is possible.

A custom json! macro would also be needed to fix https://github.com/davidpdrsn/assert-json-diff/issues/8 so at least there is two use cases now.

[angristan]

I'd love this too :)

[GrandmasterTash]

JsonUnit for Java has some good features related to this that may inspire you :) You can use values like ${json-unit.any-number} ${json-unit.any-string} ${json-unit-ignore} regex and so on....