Should().NotBeNullOrWhiteSpace() ?

Hi!

The Strings page at https://fluentassertions.com/strings says there’s a method : theString.Should().NotBeNullOrWhiteSpace();

…but I am getting : ‘ObjectAssertions’ does not contain a definition for ‘NotBeNullOrWhiteSpace’ …

Oh wait, I am doing this: Result.Should().NotBeNull().And.Should().NotBeNullOrWhiteSpace();

That doesn’t work, but this does:

Result.Should().NotBeNullOrWhiteSpace();

Why is there a difference there?

[jnyrup]

The misleading/confusing error message with ObjectAssertions is because And return an AndConstraint and then Should resolved to Should(this object) that returns an ObjectAssertions which, as the messages points out, does not contain any NotBeNullOrWhiteSpace method.

[GiganteX]

Agreed. But giving that error about ObjectAssertions, I get the feeling he/she wasn’t copying the right example.

But let’s wait until @GiganteX answers him/herself.

It’s a string yes, like this:

But when I remove the extra Should() it works nicely!