Update tests to new format

Tests/Public/Import-ZertoVpg.Tests.ps1

@@ -1,39 +1,26 @@
 #Requires -Modules Pester
-$moduleFileName = "ZertoApiWrapper.psd1"
-$here = (Split-Path -Parent $MyInvocation.MyCommand.Path).Replace("Tests", "ZertoApiWrapper")
-$sut = (Split-Path -Leaf $MyInvocation.MyCommand.Path).Replace(".Tests.", ".")
-$file = Get-ChildItem "$here\$sut"
-$modulePath = $here -replace "Public", ""
-$moduleFile = Get-ChildItem "$modulePath\$moduleFileName"
-Get-Module -Name ZertoApiWrapper | Remove-Module -Force
-Import-Module $moduleFile -Force
+$global:here = (Split-Path -Parent $MyInvocation.MyCommand.Path)
+$global:function = ((Split-Path -leaf $MyInvocation.MyCommand.Path).Split('.'))[0]
 
-Describe $file.BaseName -Tag 'Unit' {
-
-    It "is valid Powershell (Has no script errors)" {
-        $contents = Get-Content -Path $file -ErrorAction Stop
-        $errors = $null
-        $null = [System.Management.Automation.PSParser]::Tokenize($contents, [ref]$errors)
-        $errors | Should -HaveCount 0
-    }
-
-    Context "$($file.BaseName)::Parameter Unit Tests" {
+Describe $global:function -Tag 'Unit', 'Source', 'Built' {
 
+    Context "$global:function::Parameter Unit Tests" {
         It "Has a mandatory string array parameter for the settings file to import" {
-            Get-Command $file.BaseName | Should -HaveParameter settingsFile
-            Get-Command $file.BaseName | Should -HaveParameter settingsFile -Mandatory
-            Get-Command $file.BaseName | Should -HaveParameter settingsFile -Type String[]
+            Get-Command $global:function | Should -HaveParameter settingsFile
+            Get-Command $global:function | Should -HaveParameter settingsFile -Mandatory
+            Get-Command $global:function | Should -HaveParameter settingsFile -Type String[]
         }
 
         It "Will not accecpt a Null or Empty string for the settings file" {
-            {Import-ZertoVpg -settingsFile $null} | Should -Throw
-            {Import-ZertoVpg -settingsFile ""} | Should -Throw
-            {Import-ZertoVpg -settingsFile @()} | Should -Throw
+            $attrs = (Get-Command $global:function).Parameters['settingsFile'].Attributes
+            $attrs.Where{ $_ -is [ValidateNotNullOrEmpty] }.Count | Should -Be 1
         }
-
     }
 
-    Context "$($file.BaseName)::Function Unit Tests" {
+    Context "$global:function::Parameter Functional Tests" {
 
     }
 }
+
+Remove-Variable -Name here -Scope Global
+Remove-Variable -Name function -Scope Global