Replace fpm with dpkg-deb for DEB package generation (#26281)

test/packaging/linux/package-validation.tests.ps1

@@ -21,10 +21,7 @@ Describe "Linux Package Name Validation" {
         It "Should have valid RPM package names" {
             $rpmPackages = Get-ChildItem -Path $artifactsDir -Recurse -Filter *.rpm -ErrorAction SilentlyContinue
             
-            if ($rpmPackages.Count -eq 0) {
-                Set-ItResult -Skipped -Because "No RPM packages found in artifacts directory"
-                return
-            }
+            $rpmPackages.Count | Should -BeGreaterThan 0 -Because "At least one RPM package should exist in the artifacts directory"
             
             $invalidPackages = @()
             # Regex pattern for valid RPM package names.
@@ -49,8 +46,42 @@ Describe "Linux Package Name Validation" {
             if ($invalidPackages.Count -gt 0) {
                 throw ($invalidPackages | Out-String)
             }
+        }
+    }
+    
+    Context "DEB Package Names" {
+        It "Should have valid DEB package names" {
+            $debPackages = Get-ChildItem -Path $artifactsDir -Recurse -Filter *.deb -ErrorAction SilentlyContinue
             
-            $rpmPackages.Count | Should -BeGreaterThan 0
+            $debPackages.Count | Should -BeGreaterThan 0 -Because "At least one DEB package should exist in the artifacts directory"
+            
+            $invalidPackages = @()
+            # Regex pattern for valid DEB package names.
+            # Valid examples:
+            # - powershell-preview_7.6.0-preview.6-1.deb_amd64.deb
+            # - powershell-lts_7.4.13-1.deb_amd64.deb
+            # - powershell_7.4.13-1.deb_amd64.deb
+            # Breakdown:
+            # ^powershell            : Starts with 'powershell'
+            # (-preview|-lts)?       : Optionally '-preview' or '-lts'
+            # _\d+\.\d+\.\d+         : Underscore followed by version number (e.g., _7.6.0)
+            # (-[a-z]+\.\d+)?        : Optional dash, letters, dot, and digits (e.g., -preview.6)
+            # -1                     : Literal '-1'
+            # \.deb_                 : Literal '.deb_'
+            # (amd64|arm64)          : Architecture
+            # \.deb$                 : File extension
+            $debPackageNamePattern = '^powershell(-preview|-lts)?_\d+\.\d+\.\d+(-[a-z]+\.\d+)?-1\.deb_(amd64|arm64)\.deb$'
+
+            foreach ($package in $debPackages) {
+                if ($package.Name -notmatch $debPackageNamePattern) {
+                    $invalidPackages += "$($package.Name) is not a valid DEB package name"
+                    Write-Warning "$($package.Name) is not a valid DEB package name"
+                }
+            }
+            
+            if ($invalidPackages.Count -gt 0) {
+                throw ($invalidPackages | Out-String)
+            }
         }
     }
     
@@ -58,10 +89,7 @@ Describe "Linux Package Name Validation" {
         It "Should have valid tar.gz package names" {
             $tarPackages = Get-ChildItem -Path $artifactsDir -Recurse -Filter *.tar.gz -ErrorAction SilentlyContinue
             
-            if ($tarPackages.Count -eq 0) {
-                Set-ItResult -Skipped -Because "No tar.gz packages found in artifacts directory"
-                return
-            }
+            $tarPackages.Count | Should -BeGreaterThan 0 -Because "At least one tar.gz package should exist in the artifacts directory"
             
             $invalidPackages = @()
             foreach ($package in $tarPackages) {
@@ -76,8 +104,6 @@ Describe "Linux Package Name Validation" {
             if ($invalidPackages.Count -gt 0) {
                 throw ($invalidPackages | Out-String)
             }
-            
-            $tarPackages.Count | Should -BeGreaterThan 0
         }
     }