Provide a way to more easily modify a mocked parameter before comparing with a test value. about pester HOT 3 CLOSED

This is exactly what was happening. Thanks for the quick reply! This issue can be closed.

The following worked for me:

      Should -Invoke -CommandName Invoke-HATApiMethod -ModuleName $ModuleName -Times 1 -ParameterFilter {
        # We do not want to filter for the first call of this function, which doesn't contain the body param
        if($null -eq $Body){
          return $false
        }
        $MockedBodyObj = $Body | ConvertFrom-Json
        $Diffs = (Compare-HATDeepObject -Ref $MockedBodyObj -Diff $expectedBody -) | Where-Object {$_.Match -ne '=='}
        return $null -eq $Diffs
      }

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Glad I could help. 🙂
Thanks for using Pester!

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Hi. Are you sure you haven't also called Invoke-HATApiMethod without a -Body value?

-ParameterFilter will loop through all invocations in the same scope (test), so if one call was made without -Body it will fail unless you null-check in your paramterfilter.

That's the main difference between it and your workaround which use member enumeration (...ApiMethod'].BoundParams.Body) as this will silently skip the calls without a Body value.

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