Fix #2515: Include hidden folders in test discovery on Linux

Copilot-generated fix.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: nohwnd

src/Pester.RSpec.ps1

@@ -30,7 +30,8 @@
             foreach ($item in $items) {
                 if ($item.PSIsContainer) {
                     # this is an existing directory search it for tests file
-                    & $SafeCommands['Get-ChildItem'] -Recurse -Path $item -Filter "*$Extension" -File
+                    # use -Force to include hidden items (e.g. dot-prefixed folders on Linux)
+                    & $SafeCommands['Get-ChildItem'] -Recurse -Path $item -Filter "*$Extension" -File -Force
                 }
                 elseif ("FileSystem" -ne $item.PSProvider.Name) {
                     # item is not a directory and exists but is not a file so we are not interested
@@ -60,7 +61,8 @@
         else {
             # this is a path that does not exist so let's hope it is
             # a wildcarded path that will resolve to some files
-            & $SafeCommands['Get-ChildItem'] -Recurse -Path $p -Filter "*$Extension" -File
+            # use -Force to include hidden items (e.g. dot-prefixed folders on Linux)
+            & $SafeCommands['Get-ChildItem'] -Recurse -Path $p -Filter "*$Extension" -File -Force
         }
     }
 

tst/Pester.RSpec.ts.ps1

@@ -2966,4 +2966,43 @@ i -PassThru:$PassThru {
             $ex.Exception.Message | Verify-Like '*Unbound scriptblock*'
         }
     }
+
+    # Regression test for https://github.com/pester/Pester/issues/2515
+    # Find-File should discover test files inside hidden (dot-prefixed) directories.
+    # Without -Force on Get-ChildItem, hidden folders are silently skipped.
+    b "Find-File discovers hidden folders" {
+        t "discovers test files in dot-prefixed (hidden) subdirectories" {
+            $tempDir = Join-Path ([IO.Path]::GetTempPath()) "PesterHidden_$([IO.Path]::GetRandomFileName().Substring(0,4))"
+            $hiddenDir = Join-Path $tempDir '.hidden'
+            $null = New-Item -ItemType Directory -Path $hiddenDir -Force
+            $testFile = Join-Path $hiddenDir 'MyHidden.Tests.ps1'
+            Set-Content -Path $testFile -Value "Describe 'Hidden' { It 'works' { `$true | Should -Be `$true } }"
+
+            try {
+                $found = & (Get-Module Pester) { Find-File -Path $args[0] -Extension '.Tests.ps1' } $tempDir
+                $found | Should -Not -BeNullOrEmpty
+                ($found | ForEach-Object { $_.FullName }) | Should -Contain $testFile
+            }
+            finally {
+                Remove-Item -Path $tempDir -Recurse -Force
+            }
+        }
+
+        t "discovers test files in nested hidden directories" {
+            $tempDir = Join-Path ([IO.Path]::GetTempPath()) "PesterHidden2_$([IO.Path]::GetRandomFileName().Substring(0,4))"
+            $nestedHidden = Join-Path $tempDir '.config/tests'
+            $null = New-Item -ItemType Directory -Path $nestedHidden -Force
+            $testFile = Join-Path $nestedHidden 'Deep.Tests.ps1'
+            Set-Content -Path $testFile -Value "Describe 'Deep' { It 'works' { `$true | Should -Be `$true } }"
+
+            try {
+                $found = & (Get-Module Pester) { Find-File -Path $args[0] -Extension '.Tests.ps1' } $tempDir
+                $found | Should -Not -BeNullOrEmpty
+                ($found | ForEach-Object { $_.FullName }) | Should -Contain $testFile
+            }
+            finally {
+                Remove-Item -Path $tempDir -Recurse -Force
+            }
+        }
+    }
 }