Test-HawkDataParameter complete.

Hawk/internal/configurations/PSScriptAnalyzerSettings.psd1

@@ -12,5 +12,7 @@
         'PSAvoidUsingWriteHost'
         # Exclude this to allow plural nouns in cmdlet names
         'PSUseSingularNouns'
+        # Exclude this to allow test assignments to $PSBoundParameters for mocking
+        'PSAvoidAssignmentToAutomaticVariable'
     )
 }

Hawk/tests/internal/functions/Test-HawkDateParameter.Tests.ps1

@@ -0,0 +1,96 @@
+Describe 'Test-HawkDateParameter' {
+    BeforeAll {
+        # Mock Stop-PSFFunction to intercept and throw the error message directly
+        Mock -ModuleName Hawk Stop-PSFFunction {
+            param($Message)
+            throw $Message
+        }
+    }
+
+    Context 'Parameter combination validation' {
+        It 'Should throw when neither StartDate nor DaysToLookBack is provided' {
+            # Arrange
+            $PSBoundParameters = @{}
+
+            # Act & Assert
+            { Test-HawkDateParameter -PSBoundParameters $PSBoundParameters } | 
+                Should -Throw "Either StartDate or DaysToLookBack must be specified in non-interactive mode"
+        }
+
+        It 'Should process valid StartDate and EndDate combination' {
+            # Arrange
+            $currentDate = Get-Date
+            $startDate = $currentDate.AddDays(-30)
+            $endDate = $currentDate
+            $PSBoundParameters = @{
+                StartDate = $startDate
+                EndDate = $endDate
+            }
+
+            # Act
+            $result = Test-HawkDateParameter -PSBoundParameters $PSBoundParameters -StartDate $startDate -EndDate $endDate
+
+            # Assert
+            $result.StartDate | Should -Be $startDate.ToUniversalTime().Date
+            $result.EndDate | Should -Be $endDate.ToUniversalTime().Date.AddDays(1)
+        }
+    }
+
+    Context 'DaysToLookBack processing' {
+        It 'Should correctly process DaysToLookBack with specified EndDate' {
+            # Arrange
+            $currentDate = Get-Date
+            $endDate = $currentDate
+            $daysToLook = 30
+            $PSBoundParameters = @{
+                DaysToLookBack = $daysToLook
+                EndDate = $endDate
+            }
+
+            # Act
+            $result = Test-HawkDateParameter -PSBoundParameters $PSBoundParameters -DaysToLookBack $daysToLook -EndDate $endDate
+
+            # Assert
+            $result.StartDate | Should -Be $endDate.ToUniversalTime().Date.AddDays(-$daysToLook)
+            $result.EndDate | Should -Be $endDate.ToUniversalTime().Date.AddDays(1)
+        }
+
+        It 'Should calculate correct dates when only DaysToLookBack is provided' {
+            # Arrange
+            $currentDate = Get-Date
+            $daysToLook = 30
+            $PSBoundParameters = @{
+                DaysToLookBack = $daysToLook
+            }
+
+            # Act
+            $result = Test-HawkDateParameter -PSBoundParameters $PSBoundParameters -DaysToLookBack $daysToLook
+
+            # Assert
+            $result.EndDate | Should -Be $currentDate.ToUniversalTime().Date.AddDays(1)
+            $result.StartDate | Should -Be $currentDate.ToUniversalTime().Date.AddDays(-$daysToLook)
+        }
+    }
+
+    Context 'UTC conversion' {
+        It 'Should convert dates to UTC and handle end date adjustment' {
+            # Arrange
+            $currentDate = Get-Date
+            $startDate = $currentDate.AddDays(-30)
+            $endDate = $currentDate
+            $PSBoundParameters = @{
+                StartDate = $startDate
+                EndDate = $endDate
+            }
+
+            # Act
+            $result = Test-HawkDateParameter -PSBoundParameters $PSBoundParameters -StartDate $startDate -EndDate $endDate
+
+            # Assert
+            $result.StartDate | Should -Be $startDate.ToUniversalTime().Date
+            $result.EndDate | Should -Be $endDate.ToUniversalTime().Date.AddDays(1)
+        }
+    }
+
+
+}