Custom exception error with EnsureArgs about ensure.that HOT 10 CLOSED

Hi xigolle,

At this time the thought is to remove that capability. The value add did not seem worth the complexity added to the APIs and possible feature creep of validating things outside of arguments.

If you could help explain your use case we can suggest solutions or reconsider these ideas.

Thanks!

from ensure.that.

Hi ndrwrbgs,

Well now when ensureThat throws an error if something is null it is just a generic message like value cannot be null.
But it would be nice if we could set a more custom message so we can inform the user better on what is happening.

from ensure.that.

Some options comes to my mind (note, not saying anything is correct)

• We keep the Ensure.That (sigh... never ending story)
• We see this library as a guard clause lib for enforcing contracts, not a validation for end user.... and then skip support for custom messages
• We add an optional argument (param, opts) => opts.CustomMessage($"This value {param} is no good")

from ensure.that.

To be honest I really like the last idea. That way you can still use the lib as a guard clause but leave it open for additional messages.

from ensure.that.

Decision is to add something like:

(param, opts) => opts.CustomMessage($"This value {param} is no good")

Note. It should be possible to (later on) extend this with something like:

(param, opts) => opts.CustomException(new FooException())

from ensure.that.

What’s the expected type of opts here?

from ensure.that.

I will call it EnsureOptions

from ensure.that.

😃 I meant what’s it’s purpose. To encapsulate the input arguments?

from ensure.that.

Nope. To contain optional customizations of the exception or message:

EnsureArg.IsTrue(true, "myParam", o => o.WithMessage("asdf"));

or

EnsureArg.IsTrue(true, "myParam", o => o.WithException(new FooException("Schnitzel!"));

The latter takes precedence.

from ensure.that.

Something like this: 1b6411c

Will probably add WithExtraMessage to ease migration from obsolete Ensure.That and perhaps change for Funcs.

from ensure.that.