AboutAssignmentAndArithmetic: ExpectedMessage and implicit character ranges in Pester 5

[indented-automation]

Describe "Koan Bug, Issue, or Help Request"

• AboutAssignmentAndArithmetic

Context "The Problematic Assertions"

• Subtraction\cannot be used with strings
• Modulus\cannot be used on non-numeric values

Context "Your Attempts"

N/A

Context "Additional Information"

In both cases the tests rely on Should -Throw -ExpectedMessage. The current release of PSKoans prefers Pester 4.10.1 which treats -ExpectedMessage an a literal.

In Pester 5 this string supports wildcards, which in turn breaks use of types such as [System.Object[]] in an expected message string.

See also: pester/Pester#1793

[vexx32]

Oh, hm, never thought of that. That's... annoying. Does pester offer an opt-out for the wildcard behaviour? 😕