Handles piping in the a list of xlsx files

RemoveWorksheet.ps1

@@ -1,13 +1,36 @@
 Function Remove-WorkSheet {
+    <#
+      .SYNOPSIS
+        Removes one or more worksheets from one or more workbooks
+      .EXAMPLE
+        C:\> Remove-WorkSheet -Path Test1.xlsx -WorksheetName Sheet1
+        Removes the worksheet named 'Sheet1' from 'Test1.xlsx'
+
+        C:\> Remove-WorkSheet -Path Test1.xlsx -WorksheetName Sheet1,Target1
+        Removes the worksheet named 'Sheet1' and 'Target1' from 'Test1.xlsx'
+
+        C:\> Remove-WorkSheet -Path Test1.xlsx -WorksheetName Sheet1,Target1 -Show
+        Removes the worksheets and then launches the xlsx in Excel
+
+        C:\> dir c:\reports\*.xlsx | Remove-WorkSheet
+        Removes 'Sheet1' from all the xlsx files in the c:\reports directory
+
+#>
     param(
-        [Parameter(Mandatory)]
+        #    [Parameter(ValueFromPipelineByPropertyName)]
-        $Path,
+        [Parameter(ValueFromPipelineByPropertyName)]
-        [Parameter(Mandatory)]
+        [Alias('Path')]
-        [String[]]$WorksheetName,
+        $FullName,
+        [String[]]$WorksheetName = "Sheet1",
         [Switch]$Show
     )
 
-    $pkg = Open-ExcelPackage -Path $Path
+    Process {
+        if (!$FullName) {
+            throw "Remove-WorkSheet requires the and Excel file"
+        }
+
+        $pkg = Open-ExcelPackage -Path $FullName
 
         if ($pkg) {
             foreach ($wsn in $WorksheetName) {
@@ -17,3 +40,4 @@
             Close-ExcelPackage -ExcelPackage $pkg -Show:$Show
         }
     }
+}

__tests__/Remove-WorkSheet.tests.ps1

@@ -3,26 +3,76 @@ Import-Module $PSScriptRoot\..\ImportExcel.psd1 -Force
 
 Describe "Remove Worksheet" {
     Context "Remove a worksheet output" {
-        BeforeAll {
+        BeforeEach {
             # Create three sheets
             $data = ConvertFrom-Csv @"
+Name,Age
+Jane,10
+John,20
 "@
-            $xlFile = "$env:TEMP\RemoveWorsheet.xlsx"
+            $xlFile1 = "$env:TEMP\RemoveWorsheet1.xlsx"
-            Remove-Item $xlFile -ErrorAction SilentlyContinue
+            Remove-Item $xlFile1 -ErrorAction SilentlyContinue
 
-            $data | Export-Excel -Path $xlFile -WorksheetName Target1
+            $data | Export-Excel -Path $xlFile1 -WorksheetName Target1
-            $data | Export-Excel -Path $xlFile -WorksheetName Target2
+            $data | Export-Excel -Path $xlFile1 -WorksheetName Target2
-            $data | Export-Excel -Path $xlFile -WorksheetName Target3
+            $data | Export-Excel -Path $xlFile1 -WorksheetName Target3
+            $data | Export-Excel -Path $xlFile1 -WorksheetName Sheet1
+
+            $xlFile2 = "$env:TEMP\RemoveWorsheet2.xlsx"
+            Remove-Item $xlFile2 -ErrorAction SilentlyContinue
+
+            $data | Export-Excel -Path $xlFile2 -WorksheetName Target1
+            $data | Export-Excel -Path $xlFile2 -WorksheetName Target2
+            $data | Export-Excel -Path $xlFile2 -WorksheetName Target3
+            $data | Export-Excel -Path $xlFile2 -WorksheetName Sheet1
+        }
+
+        it "Should throw about the Path" {
+            {Remove-WorkSheet} | Should throw 'Remove-WorkSheet requires the and Excel file'
         }
 
         it "Should delete Target2" {
-            Remove-WorkSheet -Path $xlFile -WorksheetName Target2
+            Remove-WorkSheet -Path $xlFile1 -WorksheetName Target2
 
-            $actual = Get-ExcelSheetInfo -Path $xlFile
+            $actual = Get-ExcelSheetInfo -Path $xlFile1
 
-            $actual.Count   | Should Be 2
+            $actual.Count   | Should Be 3
             $actual[0].Name | Should Be "Target1"
             $actual[1].Name | Should Be "Target3"
+            $actual[2].Name | Should Be "Sheet1"
+        }
+
+        it "Should delete Sheet1" {
+            Remove-WorkSheet -Path $xlFile1
+
+            $actual = Get-ExcelSheetInfo -Path $xlFile1
+
+            $actual.Count   | Should Be 3
+            $actual[0].Name | Should Be "Target1"
+            $actual[1].Name | Should Be "Target2"
+            $actual[2].Name | Should Be "Target3"
+        }
+
+        it "Should delete multiple sheets" {
+            Remove-WorkSheet -Path $xlFile1 -WorksheetName Target1, Sheet1
+
+            $actual = Get-ExcelSheetInfo -Path $xlFile1
+
+            $actual.Count   | Should Be 2
+            $actual[0].Name | Should Be "Target2"
+            $actual[1].Name | Should Be "Target3"
+        }
+
+        it "Should delete sheet from multiple workbooks" {
+
+            Get-ChildItem "$env:TEMP\RemoveWorsheet*.xlsx" | Remove-WorkSheet
+
+            $actual = Get-ExcelSheetInfo -Path $xlFile1
+
+            $actual.Count   | Should Be 3
+            $actual[0].Name | Should Be "Target1"
+            $actual[1].Name | Should Be "Target2"
+            $actual[2].Name | Should Be "Target3"
         }
     }
 }