Enhance tests in Get-SqlDscStartupParameter to handle single-element arrays and null values for output properties

Author: johlju

tests/Integration/Commands/Get-SqlDscStartupParameter.Integration.Tests.ps1

@@ -134,28 +134,62 @@ Describe 'Get-SqlDscStartupParameter' -Tag @('Integration_SQL2017', 'Integration
 
         It 'Should return an object with expected DataFilePath property' {
             $script:result.DataFilePath | Should -Not -BeNullOrEmpty
-            $script:result.DataFilePath | Should -BeOfType ([System.String[]])
-            $script:result.DataFilePath[0] | Should -Match '\.mdf$'
+            # PowerShell unwraps single-element arrays to scalars, so we need to handle both cases
+            if ($script:result.DataFilePath -is [System.Array]) {
+                $script:result.DataFilePath | Should -BeOfType ([System.String[]])
+                $script:result.DataFilePath[0] | Should -Match '\.mdf$'
+            } else {
+                $script:result.DataFilePath | Should -BeOfType ([System.String])
+                $script:result.DataFilePath | Should -Match '\.mdf$'
+            }
         }
 
         It 'Should return an object with expected LogFilePath property' {
             $script:result.LogFilePath | Should -Not -BeNullOrEmpty
-            $script:result.LogFilePath | Should -BeOfType ([System.String[]])
-            $script:result.LogFilePath[0] | Should -Match '\.ldf$'
+            # PowerShell unwraps single-element arrays to scalars, so we need to handle both cases
+            if ($script:result.LogFilePath -is [System.Array]) {
+                $script:result.LogFilePath | Should -BeOfType ([System.String[]])
+                $script:result.LogFilePath[0] | Should -Match '\.ldf$'
+            } else {
+                $script:result.LogFilePath | Should -BeOfType ([System.String])
+                $script:result.LogFilePath | Should -Match '\.ldf$'
+            }
         }
 
         It 'Should return an object with expected ErrorLogPath property' {
             $script:result.ErrorLogPath | Should -Not -BeNullOrEmpty
-            $script:result.ErrorLogPath | Should -BeOfType ([System.String[]])
-            $script:result.ErrorLogPath[0] | Should -Match 'ERRORLOG$'
+            # PowerShell unwraps single-element arrays to scalars, so we need to handle both cases
+            if ($script:result.ErrorLogPath -is [System.Array]) {
+                $script:result.ErrorLogPath | Should -BeOfType ([System.String[]])
+                $script:result.ErrorLogPath[0] | Should -Match 'ERRORLOG$'
+            } else {
+                $script:result.ErrorLogPath | Should -BeOfType ([System.String])
+                $script:result.ErrorLogPath | Should -Match 'ERRORLOG$'
+            }
         }
 
-        It 'Should return TraceFlag property as an array' {
-            $script:result.TraceFlag | Should -BeOfType ([System.UInt32[]])
+        It 'Should return TraceFlag property as an array or single value' {
+            # PowerShell unwraps single-element arrays to scalars, so we need to handle both cases
+            if ($script:result.TraceFlag -is [System.Array]) {
+                $script:result.TraceFlag | Should -BeOfType ([System.UInt32[]])
+            } elseif ($script:result.TraceFlag -ne $null) {
+                $script:result.TraceFlag | Should -BeOfType ([System.UInt32])
+            } else {
+                # TraceFlag can be empty/null if no trace flags are set
+                $script:result.TraceFlag | Should -BeNullOrEmpty
+            }
         }
 
-        It 'Should return InternalTraceFlag property as an array' {
-            $script:result.InternalTraceFlag | Should -BeOfType ([System.UInt32[]])
+        It 'Should return InternalTraceFlag property as an array or single value' {
+            # PowerShell unwraps single-element arrays to scalars, so we need to handle both cases
+            if ($script:result.InternalTraceFlag -is [System.Array]) {
+                $script:result.InternalTraceFlag | Should -BeOfType ([System.UInt32[]])
+            } elseif ($script:result.InternalTraceFlag -ne $null) {
+                $script:result.InternalTraceFlag | Should -BeOfType ([System.UInt32])
+            } else {
+                # InternalTraceFlag can be empty/null if no internal trace flags are set
+                $script:result.InternalTraceFlag | Should -BeNullOrEmpty
+            }
         }
     }