(#158) Update tests

tests/chocolatey-tests/commands/choco-list.Tests.ps1

@@ -101,15 +101,27 @@ Describe "choco list" -Tag Chocolatey, ListCommand {
 
     Context "Listing local packages with unsupported argument outputs warning" -ForEach @('-l', '-lo', '--lo', '--local', '--localonly', '--local-only', '--order-by-popularity', '-a', '--all', '--allversions', '--all-versions', '-li', '-il', '-lai', '-lia', '-ali', '-ail', '-ial', '-ila') {
         BeforeAll {
+            $LogPath = "$env:ChocolateyInstall\logs\chocolatey.log"
+            $OldLogContent = Get-Content $LogPath
+            Remove-Item -Path $LogPath
+
             $Output = Invoke-Choco list $_
+            $LogFile = Get-Content -Path $LogPath
+
+            # Logs are picked up by CI for investigation if needed, so we'll keep both full sets of logs.
+            @(
+                $OldLogContent
+                $LogFile
+            ) | Set-Content -Path $LogPath
         }
 
         It "Exits with Success (0)" {
             $Output.ExitCode | Should -Be 0
         }
 
-        It "Should contain expected warning message" {
-            $Output.Lines | Should -Contain "UNSUPPORTED ARGUMENT: Ignoring the argument $_. This argument is unsupported for locally installed packages, and will be treated as a package name in Chocolatey CLI v3!"
+        It "Should contain expected warning message in the logs" {
+            @($LogFile) -match "Ignoring the argument $_. This argument is unsupported for locally installed packages." |
+                Should -Not -BeNullOrEmpty
         }
     }
 }