diff --git a/test/powershell/Modules/Microsoft.PowerShell.Utility/Unblock-File.Tests.ps1 b/test/powershell/Modules/Microsoft.PowerShell.Utility/Unblock-File.Tests.ps1
new file mode 100644
index 000000000..0c07958ce
--- /dev/null
+++ b/test/powershell/Modules/Microsoft.PowerShell.Utility/Unblock-File.Tests.ps1
@@ -0,0 +1,68 @@
+function Test-UnblockFile {
+    try {
+        Get-Content -Path $testfilepath -Stream Zone.Identifier -ErrorAction Stop | Out-Null
+    }
+    catch {
+        if ($_.FullyQualifiedErrorId -eq "GetContentReaderFileNotFoundError,Microsoft.PowerShell.Commands.GetContentCommand") {
+            return $true
+        }
+    }
+    
+    return $false
+}
+
+Describe "Unblock-File" -Tags "CI" {
+
+    BeforeAll {
+        if ( ! $IsWindows )
+        {
+            $origDefaults = $PSDefaultParameterValues.Clone()
+            $PSDefaultParameterValues['it:skip'] = $true
+
+        } else {
+            $testfilepath = Join-Path -Path $TestDrive -ChildPath testunblockfile.ttt
+        }
+    }
+
+    AfterAll {
+        if ( ! $IsWindows ){
+            $global:PSDefaultParameterValues = $origDefaults
+        }
+    }
+
+    BeforeEach {
+        if ( $IsWindows ){
+            Set-Content -Value "[ZoneTransfer]`r`nZoneId=4" -Path $testfilepath -Stream Zone.Identifier
+        }
+    }
+
+    It "With '-Path': no file exist" {
+        try {
+            Unblock-File -Path nofileexist.ttt -ErrorAction Stop
+            throw "No Exception!"
+        } 
+        catch {
+            $_.FullyQualifiedErrorId | Should Be "FileNotFound,Microsoft.PowerShell.Commands.UnblockFileCommand"
+        }
+    }
+
+    It "With -LiteralPath': no file exist" {
+        try {
+            Unblock-File -LiteralPath nofileexist.ttt -ErrorAction Stop
+            throw "No Exception!"
+        } 
+        catch {
+            $_.FullyQualifiedErrorId | Should Be "FileNotFound,Microsoft.PowerShell.Commands.UnblockFileCommand"
+        }
+    }
+
+    It "With '-Path': file exist" {
+        Unblock-File -Path $testfilepath
+        Test-UnblockFile | Should Be $true
+    }
+
+    It "With '-LiteralPath': file exist" {
+        Unblock-File -LiteralPath $testfilepath
+        Test-UnblockFile | Should Be $true
+    }
+}