test array to include an object with a certain key: value

Hello,

As the title says we found our selves in a situation where we need to check if an array contains an element that one of his properties equals to something.

We tried and search for a couple of hours until we desided to raise an issue about it. We were able to solve the problem like this:

const playersRegs = created.gameLog.filter(e => e.nameType === eventTypes.PlayerReg);
expect(playersRegs).to.have.lengthOf(1);

but we were hoping for something a bit like:

expect(created.gameLog).to.include.something.that.has.property('nameType', eventTypes.PlayerReg);

if we missed anything please let us know and if we didnt please consider adding this functionality 😉

[jessicabyrne]

@keithamus Is there a solution available through chai now?

[meeber]

Makes sense. In a case like this one, I can understand accepting decreased precision in exchange for increased maintainability.

A couple of weeks ago I was thinking about the level of effort of making the chai-things plugin compatible with Chai v4. The current stance is we’d wait for #585 to be resolved before fixing chai-things, but that feels like a long ways away to me. Given that the plugin is basically unusable at the moment, I think it might be worth it to fix the plugin directly.