Added new-alias pester tests

src/pester-tests/Test-New-Alias.Tests.ps1

@@ -0,0 +1,34 @@
+Describe "Test-New-Alias" {
+    It "Should be able to be called using the name and value parameters without error" {
+        { New-Alias -Name testAlias -Value 100 } | Should Not Throw
+    }
+
+    It "Should have the same output between the alias and the original cmdlet" {
+        New-Alias -Name testAlias -Value Get-Process
+
+        $aliasId  = $(testAlias).Id
+        $cmdletId = $(Get-Process).Id
+        foreach ($IdNumber in $aliasId)
+        {
+            $aliasId[$IdNumber] | Should Be $cmdletId[$IdNumber]
+        }
+    }
+
+    It "Should be able to call the New-Alias cmdlet using the nal alias without error" {
+        { nal -Name testAlias -Value 100 } | Should Not Throw
+    }
+
+    It "Should have the same output between the nal alias and the New-Alias cmdlet" {
+        nal -Name testAlias -Value Get-Process
+        
+        New-Alias -Name testalias2 -Value Get-Process
+
+        $aliasData = $(testAlias).Id
+        $cmdletData = $(testAlias2).Id
+
+        foreach ($IdNumber in $aliasData)
+        {
+            $aliasData[$IdNumber] | Should Be $cmdletData[$IdNumber]
+        }
+    }
+}