Delete specific rows from ErrorRecord

[SQLDBAWithoutABeard]

Is there any way to delete specific lines from ErrorRecord please? I only want the first line, then the lines starting with 'Expected:' (line 5) and 'But Was:' (line 6), so I'd like to delete the lines starting ErrorRecord: Expected length: * , Actual length: *, and Strings differ at index 0.

Expected strings to be the same, because TREE be set to TRUE, but they were different.
Expected length: 4
Actual length: 5
Strings differ at index 0.
Expected: ''TRUE''
But was: ''FALSE''
^
Thanks

[fflaten]

Could you explain the use case? Where would you use this and how?

Are you trying to modify it before Pester prints to screen? Or are you using PassThru and post-processing the result object?

[SQLDBAWithoutABeard]

Do you have an example of using replace please? I couldn't get it working! No problem if not :)

[fflaten]

Try
$_.ErrorRecord.DisplayErrorMessage -replace '(?ms)^Expected length:.*?(?=Expected:)'

[SQLDBAWithoutABeard]

That worked a treat thanks. Any idea how I could drop the last line too (with the ^). Thanks again

[fflaten]

$_.ErrorRecord.DisplayErrorMessage -replace '(?ms)^Expected length:.*?(Expected:.*?)\s+\^', '$1'

[SQLDBAWithoutABeard]

Many thanks for your help