Remove functional option caller name match expectation

[dillonstreator]

Summary

Fixes #1380 by removing expectations around optional functions calling function names. These assertions are not necessary to satisfy the testing use case for functional options and are in fact just outright incorrect due to the curried nature of the optional function. The time at which the return function from the optional function is evaluated, the optional function name is no longer accessible/in-scope.

Changes

• Removes expectation around functional options caller name matching as it is not guaranteed and not truly asserting the functional options function name.
• Adds test to cover additional use case.
• Introduces a strict length check on the function options.

Motivation

Fix bug and improve test to cover additional use cases.

Related issues

Closes #1380

[dillonstreator]

@nbaztec curious to get your feedback on this as you implemented most of the initial version of functional options support

[nbaztec]

I might've been too strict in ensuring that exactly the intended option is passed, ergo the explicit nature of providing the option name as well (which we removed as part of the original PR). As of now I cannot seem to think of a use-case where that might be absolutely necessary, as such if the other tests pass, perhaps we can go forward with it.

[dillonstreator]

Hi @boyan-soubachov, could you please review this PR and provide feedback? It's currently blocking one of the primary use cases for testing functional options. Your insights would be greatly appreciated.

[dolmen]

@dillonstreator Please rebase this PR as it includes gofmt 1.20 formatting changes that have already been applied. Those change pollute the diff and make reviewing harder.

[dillonstreator]

@dolmen thanks for the heads-up - rebased 👍

[dolmen]

Please don't merge master into your branch.

Instead:

git remote update
git rebase origin/master
git push -f

[dillonstreator]

Please don't merge master into your branch.

Instead:

git remote update
git rebase origin/master
git push -f

@dolmen executing this wiped my changes

[dolmen]

No more patch in this MR :(