KeyExists assert

[qwerty2586]

Sometime I struggle with checking if map has some key i need, for example from unmarshaled json.

Something like this would be nice

func (asserter Asserter) KeyExists[T comparable, V any](m map[T]V, key T, a ...any) {
	_, exists := m[key]
        if !exists {
               defMsg := fmt.Sprintf("key %v doesnt exist", key)
               asserter.reportAssertionFault(defMsg, a...)
        }
}

Not sure if this implementation is ok

[lainio]

That's an excellent idea. I'll add it to my backlog. ETA in the next release, hopefully in a week.

[lainio]

Hi @qwerty2586, the latest version, v0.8.10, has assert.MKeyExists. The M prefix is there for the future -- mainly. And because it follows the current naming convention: S = slice, M = map, C = channel, I interface.

I have migrated one of our large code bases to use err2 instead of testfify, and the first feelings have been great.

Please let me know if you find any bugs or anything.

[qwerty2586]

Looks great. Your lib will soon eradicate all these pesky one-time variables.