fix tests after upgrade pester

Author: Laoujin

Tests/TestBed.ps1

@@ -21,5 +21,6 @@ $global:gitStatusNumbers = @{
 # Use Utf8 when capturing git output
 # [Console]::OutputEncoding = [System.Text.Encoding]::Utf8
 
-
-Get-ChildItem -Recurse ("$PSScriptRoot\..\lib\*.ps1") | ForEach-Object {. $_.FullName}
+BeforeAll {
+	Get-ChildItem -Recurse ("$PSScriptRoot\..\lib\*.ps1") | ForEach-Object {. $_.FullName}
+}