Added Protect-Worksheet Tests

__tests__/ProtectWorksheet.tests.ps1

@@ -0,0 +1,37 @@
+$path = "$Env:TEMP\test.xlsx"
+Remove-Item -path $path -ErrorAction SilentlyContinue
+$excel = ConvertFrom-Csv    @"
+Product, City, Gross, Net
+Apple, London , 300, 250
+Orange, London , 400, 350
+Banana, London , 300, 200
+Orange, Paris,   600, 500
+Banana, Paris,   300, 200
+Apple, New York, 1200,700
+
+"@  | Export-Excel  -Path $path  -WorksheetName Sheet1 -PassThru
+
+$ws = $excel.sheet1
+
+Set-WorkSheetProtection -WorkSheet $ws -IsProtected -BlockEditObject -AllowFormatRows -UnLockAddress "1:1"
+
+Close-ExcelPackage -ExcelPackage $excel
+
+Describe "Setting worksheet protection " {
+    BeforeAll {
+        $excel = Open-ExcelPackage -Path $path
+        $ws = $ws = $excel.sheet1
+    }
+    it "Turned on protection for the sheet                       " {
+        $ws.Protection.IsProtected                                  | should     be  $true
+    }
+    it "Set sheet-wide protection options                        " {
+        $ws.Protection.AllowEditObject                              | should     be  $false
+        $ws.Protection.AllowFormatRows                              | should     be  $true
+        $ws.cells["a2"].Style.Locked                                | should     be  $true
+    }
+    it "Unprotected some cells                                   " {
+        $ws.cells["a1"].Style.Locked                                | should     be  $false
+    }
+}
+