Add unit test

Author: johlju

tests/Unit/FailoverClusterDsc.Common.Tests.ps1

@@ -0,0 +1,25 @@
+$script:dscModuleName = 'FailoverClusterDsc'
+$script:subModuleName = 'FailoverClusterDsc.Common'
+
+$script:parentModule = Get-Module -Name $script:dscModuleName -ListAvailable | Select-Object -First 1
+$script:subModulesFolder = Join-Path -Path $script:parentModule.ModuleBase -ChildPath 'Modules'
+
+$script:subModulePath = Join-Path -Path $script:subModulesFolder -ChildPath $script:subModuleName
+
+Import-Module -Name $script:subModulePath -Force -ErrorAction 'Stop'
+
+Describe 'FailoverClusterDsc.Common\Convert-DistinguishedNameToSimpleName' -Tag 'Convert-DistinguishedNameToSimpleName' {
+    Context 'When passing a distinguished name' {
+        It 'Should return the expected cluster name' {
+            Convert-DistinguishedNameToSimpleName -DistinguishedName 'CN=CLUSTER1,OU=BUSINESS,DC=RANDOM,DC=LOCAL' |
+                Should -Be 'CLUSTER1'
+        }
+    }
+
+    Context 'When passing a cluster name' {
+        It 'Should return the expected cluster name' {
+            Convert-DistinguishedNameToSimpleName -DistinguishedName 'CLUSTER2' |
+                Should -Be 'CLUSTER2'
+        }
+    }
+}