diff --git a/CHANGELOG.md b/CHANGELOG.md
index ab28a2a5a..9763e08e1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,11 @@
 
 ## Unreleased
 
+- Changes to ADReplicationSite
+  - Added 'Description' attribute parameter ([issue #500](https://github.com/PowerShell/ActiveDirectoryDsc/issues/500)).
+  - Added Integration testing ([issue #355](https://github.com/PowerShell/ActiveDirectoryDsc/issues/355)).
+  - Correct value returned for RenameDefaultFirstSiteName ([issue #502](https://github.com/PowerShell/ActiveDirectoryDsc/issues/502)).
+
 ## 4.1.0.0
 
 - Changes to ActiveDirectoryDsc
diff --git a/DSCResources/MSFT_ADReplicationSite/MSFT_ADReplicationSite.psm1 b/DSCResources/MSFT_ADReplicationSite/MSFT_ADReplicationSite.psm1
index b90fde471..d4531b55b 100644
--- a/DSCResources/MSFT_ADReplicationSite/MSFT_ADReplicationSite.psm1
+++ b/DSCResources/MSFT_ADReplicationSite/MSFT_ADReplicationSite.psm1
@@ -21,13 +21,17 @@ function Get-TargetResource
     (
         [Parameter(Mandatory = $true)]
         [System.String]
-        $Name
+        $Name,
+
+        [Parameter()]
+        [System.Boolean]
+        $RenameDefaultFirstSiteName
     )
 
     # Get the replication site filtered by it's name. If the site is not
     # present, the command will return $null.
     Write-Verbose -Message ($script:localizedData.GetReplicationSite -f $Name)
-    $replicationSite = Get-ADReplicationSite -Filter { Name -eq $Name }
+    $replicationSite = Get-ADReplicationSite -Filter { Name -eq $Name } -ErrorAction SilentlyContinue
 
     if ($null -eq $replicationSite)
     {
@@ -35,7 +39,8 @@ function Get-TargetResource
         $returnValue = @{
             Ensure                     = 'Absent'
             Name                       = $Name
-            RenameDefaultFirstSiteName = ''
+            Description                = $null
+            RenameDefaultFirstSiteName = $RenameDefaultFirstSiteName
         }
     }
     else
@@ -44,7 +49,8 @@ function Get-TargetResource
         $returnValue = @{
             Ensure                     = 'Present'
             Name                       = $Name
-            RenameDefaultFirstSiteName = ''
+            Description                = $replicationSite.Description
+            RenameDefaultFirstSiteName = $RenameDefaultFirstSiteName
         }
     }
 
@@ -82,29 +88,54 @@ function Set-TargetResource
 
         [Parameter()]
         [System.Boolean]
-        $RenameDefaultFirstSiteName = $false
+        $RenameDefaultFirstSiteName = $false,
+
+        [Parameter()]
+        [System.String]
+        $Description
     )
 
+    $getTargetResourceResult = Get-TargetResource -Name $Name -RenameDefaultFirstSiteName $RenameDefaultFirstSiteName
+
     if ($Ensure -eq 'Present')
     {
-        $defaultFirstSiteName = Get-ADReplicationSite -Filter { Name -eq 'Default-First-Site-Name' }
-
-        <#
-            Check if the user specified to rename the Default-First-Site-Name
-            and if it still exists. If both is true, rename the replication site
-            instead of creating a new site.
-        #>
-        if ($RenameDefaultFirstSiteName -and ($null -ne $defaultFirstSiteName))
+        if ($getTargetResourceResult.Ensure -eq 'Absent')
         {
-            Write-Verbose -Message ($script:localizedData.AddReplicationSiteDefaultFirstSiteName -f $Name)
-
-            Rename-ADObject -Identity $defaultFirstSiteName.DistinguishedName -NewName $Name -ErrorAction Stop
+            $defaultFirstSiteName = Get-ADReplicationSite -Filter { Name -eq 'Default-First-Site-Name' } -ErrorAction SilentlyContinue
+
+            <#
+                Check if the user specified to rename the Default-First-Site-Name
+                and if it still exists. If both is true, rename the replication site
+                instead of creating a new site.
+            #>
+            if ($RenameDefaultFirstSiteName -and $null -ne $defaultFirstSiteName)
+            {
+                Write-Verbose -Message ($script:localizedData.AddReplicationSiteDefaultFirstSiteName -f $Name)
+
+                Rename-ADObject -Identity $defaultFirstSiteName.DistinguishedName -NewName $Name -ErrorAction Stop
+            }
+            else
+            {
+                Write-Verbose -Message ($script:localizedData.AddReplicationSite -f $Name)
+
+                $newADReplicationSiteParameters = @{
+                    Name        = $Name
+                    ErrorAction = 'Stop'
+                }
+
+                if ($PSBoundParameters.ContainsKey('Description'))
+                {
+                    $newADReplicationSiteParameters['Description'] = $Description
+                }
+
+                New-ADReplicationSite @newADReplicationSiteParameters
+            }
         }
-        else
-        {
-            Write-Verbose -Message ($script:localizedData.AddReplicationSite -f $Name)
 
-            New-ADReplicationSite -Name $Name -ErrorAction Stop
+        if ($PSBoundParameters.ContainsKey('Description') -and $getTargetResourceResult.Description -ne $Description)
+        {
+            Write-Verbose -Message ($script:localizedData.UpdateReplicationSite -f $Name)
+            Set-ADReplicationSite -Identity $Name -Description $Description
         }
     }
 
@@ -130,6 +161,11 @@ function Set-TargetResource
     .PARAMETER RenameDefaultFirstSiteName
         Specify if the Default-First-Site-Name should be renamed, if it exists.
         Dafult value is 'false'.
+
+    .PARAMETER Description
+        Specifies a description of the object. This parameter sets the value of
+        the Description property for the object. The LDAP Display Name
+        (ldapDisplayName) for this property is 'description'.
 #>
 function Test-TargetResource
 {
@@ -148,18 +184,54 @@ function Test-TargetResource
 
         [Parameter()]
         [System.Boolean]
-        $RenameDefaultFirstSiteName = $false
+        $RenameDefaultFirstSiteName = $false,
+
+        [Parameter()]
+        [System.String]
+        $Description
     )
 
-    $currentConfiguration = Get-TargetResource -Name $Name
+    $getTargetResourceResult = Get-TargetResource -Name $Name -RenameDefaultFirstSiteName $RenameDefaultFirstSiteName
+    $configurationCompliant = $true
 
-    if ($currentConfiguration.Ensure -eq $Ensure)
+    if ($getTargetResourceResult.Ensure -eq 'Absent')
     {
-        Write-Verbose -Message ($script:localizedData.ReplicationSiteInDesiredState -f $Name)
+        # Site doesn't exist
+        if ($getTargetResourceResult.Ensure -eq $Ensure)
+        {
+            # Site should not exist
+            Write-Verbose -Message ($script:localizedData.ReplicationSiteInDesiredState -f $Name)
+        }
+        else
+        {
+            #Site should exist
+            Write-Verbose -Message ($script:localizedData.ReplicationSiteNotInDesiredState -f $Name)
+            $configurationCompliant = $false
+        }
     }
     else
     {
-        Write-Verbose -Message ($script:localizedData.ReplicationSiteNotInDesiredState -f $Name)
+        # Site Exists
+        if ($getTargetResourceResult.Ensure -eq $Ensure)
+        {
+            # Site should exist
+            if ($getTargetResourceResult.Description -ne $Description)
+            {
+                Write-Verbose -Message ($script:localizedData.ReplicationSiteNotInDesiredState -f $Name)
+                $configurationCompliant = $false
+            }
+            else
+            {
+                Write-Verbose -Message ($script:localizedData.ReplicationSiteInDesiredState -f $Name)
+            }
+        }
+        else
+        {
+            # Site should not exist
+            Write-Verbose -Message ($script:localizedData.ReplicationSiteNotInDesiredState -f $Name)
+            $configurationCompliant = $false
+        }
     }
-    return $currentConfiguration.Ensure -eq $Ensure
+
+    return $configurationCompliant
 }
diff --git a/DSCResources/MSFT_ADReplicationSite/MSFT_ADReplicationSite.schema.mof b/DSCResources/MSFT_ADReplicationSite/MSFT_ADReplicationSite.schema.mof
index 024c63c7f..2993c35bf 100644
--- a/DSCResources/MSFT_ADReplicationSite/MSFT_ADReplicationSite.schema.mof
+++ b/DSCResources/MSFT_ADReplicationSite/MSFT_ADReplicationSite.schema.mof
@@ -4,4 +4,5 @@ class MSFT_ADReplicationSite : OMI_BaseResource
     [Write, Description("Specifies if the Active Directory replication site should be present or absent. Default value is 'Present'."), ValueMap{"Present", "Absent"}, Values{"Present", "Absent"}] String Ensure;
     [Key, Description("Specifies the name of the Active Directory replication site.")] String Name;
     [Write, Description("Specifies if the Default-First-Site-Name should be renamed if it exists. Default value is $false.")] Boolean RenameDefaultFirstSiteName;
+    [Write, Description("Specifies a description of the object. This parameter sets the value of the Description property for the object. The LDAP Display Name (ldapDisplayName) for this property is 'description'.")] String Description;
 };
diff --git a/DSCResources/MSFT_ADReplicationSite/en-US/MSFT_ADReplicationSite.strings.psd1 b/DSCResources/MSFT_ADReplicationSite/en-US/MSFT_ADReplicationSite.strings.psd1
index 533ed8515..7a30f4d3b 100644
--- a/DSCResources/MSFT_ADReplicationSite/en-US/MSFT_ADReplicationSite.strings.psd1
+++ b/DSCResources/MSFT_ADReplicationSite/en-US/MSFT_ADReplicationSite.strings.psd1
@@ -8,4 +8,5 @@ ConvertFrom-StringData @'
     ReplicationSitePresent                 = Replication site '{0}' is present. (ADRS0006)
     ReplicationSiteInDesiredState          = The replication site '{0}' is in the desired state. (ADRS0007)
     ReplicationSiteNotInDesiredState       = The replication site '{0}' is not in the desired state. (ADRS0008)
+    UpdateReplicationSite                  = The replication site '{0}' needs to be updated.
 '@
diff --git a/DSCResources/MSFT_ADReplicationSite/en-US/about_ADReplicationSite.help.txt b/DSCResources/MSFT_ADReplicationSite/en-US/about_ADReplicationSite.help.txt
index bfe0abf62..5239711ba 100644
--- a/DSCResources/MSFT_ADReplicationSite/en-US/about_ADReplicationSite.help.txt
+++ b/DSCResources/MSFT_ADReplicationSite/en-US/about_ADReplicationSite.help.txt
@@ -21,6 +21,10 @@
     Write - Boolean
     Specifies if the Default-First-Site-Name should be renamed if it exists. Default value is $false.
 
+.PARAMETER Description
+    Write - String
+    Specifies a description of the object. This parameter sets the value of the Description property for the object. The LDAP Display Name (ldapDisplayName) for this property is 'description'.
+
 .EXAMPLE 1
 
 This configuration will create an Active Directory replication site
@@ -80,4 +84,22 @@ Configuration ADReplicationSite_RemoveADReplicationSite_Config
     }
 }
 
+.EXAMPLE 4
+
+This configuration will set the AD Relication Site description for
+a site called SeattleSite
+
+Configuration ADReplicationSite_CreateADReplicationSite_Config
+{
+    Import-DscResource -Module ActiveDirectoryDsc
 
+    Node localhost
+    {
+        ADReplicationSite 'SeattleSite'
+        {
+            Ensure      = 'Present'
+            Name        = 'Seattle'
+            Description = 'Seattle Head Office'
+        }
+    }
+}
diff --git a/Tests/Integration/MSFT_ADReplicationSite.Integration.Tests.ps1 b/Tests/Integration/MSFT_ADReplicationSite.Integration.Tests.ps1
new file mode 100644
index 000000000..da5674fed
--- /dev/null
+++ b/Tests/Integration/MSFT_ADReplicationSite.Integration.Tests.ps1
@@ -0,0 +1,192 @@
+if ($env:APPVEYOR -eq $true)
+{
+    Write-Warning -Message 'Integration test is not supported in AppVeyor.'
+    return
+}
+
+$script:dscModuleName = 'ActiveDirectoryDsc'
+$script:dscResourceFriendlyName = 'ADReplicationSite'
+$script:dscResourceName = "MSFT_$($script:dscResourceFriendlyName)"
+
+#region HEADER
+# Integration Test Template Version: 1.3.3
+[System.String] $script:moduleRoot = Split-Path -Parent (Split-Path -Parent $PSScriptRoot)
+if ( (-not (Test-Path -Path (Join-Path -Path $script:moduleRoot -ChildPath 'DSCResource.Tests'))) -or `
+    (-not (Test-Path -Path (Join-Path -Path $script:moduleRoot -ChildPath 'DSCResource.Tests\TestHelper.psm1'))) )
+{
+    & git @('clone', 'https://github.com/PowerShell/DscResource.Tests.git', (Join-Path -Path $script:moduleRoot -ChildPath 'DscResource.Tests'))
+}
+
+Import-Module -Name (Join-Path -Path $script:moduleRoot -ChildPath (Join-Path -Path 'DSCResource.Tests' -ChildPath 'TestHelper.psm1')) -Force
+$TestEnvironment = Initialize-TestEnvironment `
+    -DSCModuleName $script:dscModuleName `
+    -DSCResourceName $script:dscResourceName `
+    -TestType Integration
+#endregion
+
+try
+{
+    $configFile = Join-Path -Path $PSScriptRoot -ChildPath "$($script:dscResourceName).config.ps1"
+    . $configFile
+
+    Describe "$($script:dscResourceName)_Integration" {
+
+        BeforeAll {
+            $resourceId = "[$($script:dscResourceFriendlyName)]Integration_Test"
+        }
+
+        $configurationName = "$($script:dscResourceName)_CreateSite_Config"
+
+        Context ('When using configuration {0}' -f $configurationName) {
+            It 'Should compile and apply the MOF without throwing' {
+                {
+                    $configurationParameters = @{
+                        OutputPath        = $TestDrive
+                        # The variable $ConfigurationData was dot-sourced above.
+                        ConfigurationData = $ConfigurationData
+                    }
+
+                    & $configurationName @configurationParameters
+
+                    $startDscConfigurationParameters = @{
+                        Path         = $TestDrive
+                        ComputerName = 'localhost'
+                        Wait         = $true
+                        Verbose      = $true
+                        Force        = $true
+                        ErrorAction  = 'Stop'
+                    }
+
+                    Start-DscConfiguration @startDscConfigurationParameters
+                } | Should -Not -Throw
+            }
+
+            It 'Should be able to call Get-DscConfiguration without throwing' {
+                {
+                    $script:currentConfiguration = Get-DscConfiguration -Verbose -ErrorAction Stop
+                } | Should -Not -Throw
+            }
+
+            It 'Should have set the resource and all the parameters should match' {
+                $resourceCurrentState = $script:currentConfiguration | Where-Object -FilterScript {
+                    $_.ConfigurationName -eq $configurationName `
+                        -and $_.ResourceId -eq $resourceId
+                }
+
+                $resourceCurrentState.Name | Should -Be 'NewADSite'
+                $resourceCurrentState.Description | Should -Be 'New AD site description'
+            }
+
+            It 'Should return $true when Test-DscConfiguration is run' {
+                Test-DscConfiguration -Verbose | Should -Be 'True'
+            }
+        }
+
+        $configurationName = "$($script:dscResourceName)_RemoveSite_Config"
+
+        Context ('When using configuration {0}' -f $configurationName) {
+            It 'Should compile and apply the MOF without throwing' {
+                {
+                    $configurationParameters = @{
+                        OutputPath        = $TestDrive
+                        # The variable $ConfigurationData was dot-sourced above.
+                        ConfigurationData = $ConfigurationData
+                    }
+
+                    & $configurationName @configurationParameters
+
+                    $startDscConfigurationParameters = @{
+                        Path         = $TestDrive
+                        ComputerName = 'localhost'
+                        Wait         = $true
+                        Verbose      = $true
+                        Force        = $true
+                        ErrorAction  = 'Stop'
+                    }
+
+                    Start-DscConfiguration @startDscConfigurationParameters
+                } | Should -Not -Throw
+            }
+
+            It 'Should be able to call Get-DscConfiguration without throwing' {
+                {
+                    $script:currentConfiguration = Get-DscConfiguration -Verbose -ErrorAction Stop
+                } | Should -Not -Throw
+            }
+
+            It 'Should have set the resource and all the parameters should match' {
+                $resourceCurrentState = $script:currentConfiguration | Where-Object -FilterScript {
+                    $_.ConfigurationName -eq $configurationName `
+                        -and $_.ResourceId -eq $resourceId
+                }
+
+                $resourceCurrentState.IsSingleInstance | Should -BeNullOrEmpty
+            }
+
+            It 'Should return $true when Test-DscConfiguration is run' {
+                Test-DscConfiguration -Verbose | Should -Be 'True'
+            }
+        }
+
+        $configurationName = "$($script:dscResourceName)_RenameDefaultSite_Config"
+
+        Context ('When using configuration {0}' -f $configurationName) {
+            It 'Should compile and apply the MOF without throwing' {
+                {
+                    $configurationParameters = @{
+                        OutputPath        = $TestDrive
+                        # The variable $ConfigurationData was dot-sourced above.
+                        ConfigurationData = $ConfigurationData
+                    }
+
+                    & $configurationName @configurationParameters
+
+                    $startDscConfigurationParameters = @{
+                        Path         = $TestDrive
+                        ComputerName = 'localhost'
+                        Wait         = $true
+                        Verbose      = $true
+                        Force        = $true
+                        ErrorAction  = 'Stop'
+                    }
+
+                    Start-DscConfiguration @startDscConfigurationParameters
+                } | Should -Not -Throw
+            }
+
+            It 'Should be able to call Get-DscConfiguration without throwing' {
+                {
+                    $script:currentConfiguration = Get-DscConfiguration -Verbose -ErrorAction Stop
+                } | Should -Not -Throw
+            }
+
+            It 'Should have set the resource and all the parameters should match' {
+                $resourceCurrentState = $script:currentConfiguration | Where-Object -FilterScript {
+                    $_.ConfigurationName -eq $configurationName `
+                        -and $_.ResourceId -eq $resourceId
+                }
+
+                $resourceCurrentState.Name | Should -Be 'RenamedDefaultADSite'
+                $resourceCurrentState.Description | Should -Be 'Renaming Default Site'
+            }
+
+            It 'Should return $true when Test-DscConfiguration is run' {
+                Test-DscConfiguration -Verbose | Should -Be 'True'
+            }
+        }
+    }
+}
+finally
+{
+    #region FOOTER
+
+    # Rename Site back to Default
+    $renamedSite = Get-ADReplicationSite -Filter { Name -eq 'RenamedDefaultADSite' }
+    if ($null -ne $renamedSite)
+    {
+        Set-ADReplicationSite -Identity $RenamedSite -Description $null
+        Rename-ADObject -Identity $RenamedSite.DistinguishedName -NewName 'Default-First-Site-Name' -ErrorAction Stop
+    }
+    Restore-TestEnvironment -TestEnvironment $TestEnvironment
+    #endregion
+}
diff --git a/Tests/Integration/MSFT_ADReplicationSite.config.ps1 b/Tests/Integration/MSFT_ADReplicationSite.config.ps1
new file mode 100644
index 000000000..6b6d01eaa
--- /dev/null
+++ b/Tests/Integration/MSFT_ADReplicationSite.config.ps1
@@ -0,0 +1,83 @@
+#region HEADER
+# Integration Test Config Template Version: 1.2.0
+#endregion
+
+$configFile = [System.IO.Path]::ChangeExtension($MyInvocation.MyCommand.Path, 'json')
+if (Test-Path -Path $configFile)
+{
+    <#
+        Allows reading the configuration data from a JSON file, for real testing
+        scenarios outside of the CI.
+    #>
+    $ConfigurationData = Get-Content -Path $configFile | ConvertFrom-Json
+}
+else
+{
+    $ConfigurationData = @{
+        AllNodes = @(
+            @{
+                NodeName        = 'localhost'
+                CertificateFile = $env:DscPublicCertificatePath
+            }
+        )
+    }
+}
+
+<#
+    .SYNOPSIS
+        Creates a brand new Site in AD Sites and Services.
+#>
+Configuration MSFT_ADReplicationSite_CreateSite_Config
+{
+    Import-DscResource -ModuleName 'ActiveDirectoryDsc'
+
+    node $AllNodes.NodeName
+    {
+        ADReplicationSite 'Integration_Test'
+        {
+            Name        = 'NewADSite'
+            Description = 'New AD site description'
+            Ensure      = 'Present'
+        }
+    }
+}
+
+<#
+    .SYNOPSIS
+        Remove site from AD Sites and Services
+#>
+Configuration MSFT_ADReplicationSite_RemoveSite_Config
+{
+    Import-DscResource -ModuleName 'ActiveDirectoryDsc'
+
+    node $AllNodes.NodeName
+    {
+        ADReplicationSite 'Integration_Test'
+        {
+            Name        = 'NewADSite'
+            Description = 'New AD site description'
+            Ensure      = 'Absent'
+        }
+    }
+}
+
+<#
+    .SYNOPSIS
+        Rename the Default Site in Active Directory
+#>
+Configuration MSFT_ADReplicationSite_RenameDefaultSite_Config
+{
+    Import-DscResource -ModuleName 'ActiveDirectoryDsc'
+
+    node $AllNodes.NodeName
+    {
+        ADReplicationSite 'Integration_Test'
+        {
+            Name                       = 'RenamedDefaultADSite'
+            Description                = 'Renaming Default Site'
+            Ensure                     = 'Present'
+            RenameDefaultFirstSiteName = $true
+        }
+    }
+}
+
diff --git a/Tests/Unit/MSFT_ADReplicationSite.Tests.ps1 b/Tests/Unit/MSFT_ADReplicationSite.Tests.ps1
index 005b3f4b4..4d33b035e 100644
--- a/Tests/Unit/MSFT_ADReplicationSite.Tests.ps1
+++ b/Tests/Unit/MSFT_ADReplicationSite.Tests.ps1
@@ -46,12 +46,14 @@ try
         # Load stub cmdlets and classes.
         Import-Module (Join-Path -Path $PSScriptRoot -ChildPath 'Stubs\ActiveDirectory_2019.psm1') -Force
 
-        $presentSiteName = 'DemoSite'
-        $absentSiteName  = 'MissingSite'
+        $presentSiteName    = 'DemoSite'
+        $absentSiteName     = 'MissingSite'
+        $genericDescription = "Demonstration Site Description"
 
         $presentSiteMock = [PSCustomObject] @{
             Name              = $presentSiteName
             DistinguishedName = "CN=$presentSiteName,CN=Sites,CN=Configuration,DC=contoso,DC=com"
+            Description       = $genericDescription
         }
 
         $defaultFirstSiteNameSiteMock = [PSCustomObject] @{
@@ -59,33 +61,51 @@ try
             DistinguishedName = "CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=contoso,DC=com"
         }
 
+        $absentSiteDefaultRenameMock = @{
+            Ensure                     = 'Absent'
+            Name                       = $presentSiteTestPresent
+            Description                = $null
+            RenameDefaultFirstSiteName = $true
+        }
+
         $presentSiteTestPresent = @{
-            Ensure = 'Present'
-            Name   = $presentSiteName
+            Ensure      = 'Present'
+            Name        = $presentSiteName
+            Description = $genericDescription
         }
         $presentSiteTestAbsent = @{
             Ensure = 'Absent'
             Name   = $presentSiteName
+            Description = $genericDescription
+        }
+
+        $presentSiteTestMismatchDescription = @{
+            Ensure = 'Present'
+            Name   = $presentSiteName
+            Description = 'Some random test description'
         }
 
         $absentSiteTestPresent = @{
             Ensure = 'Present'
             Name   = $absentSiteName
+            Description = $genericDescription
         }
         $absentSiteTestAbsent = @{
             Ensure = 'Absent'
             Name   = $absentSiteName
+            Description = $genericDescription
         }
 
         $presentSiteTestPresentRename = @{
             Ensure                     = 'Present'
             Name                       = $presentSiteName
+            Description                = $genericDescription
             RenameDefaultFirstSiteName = $true
         }
 
         #region Function Get-TargetResource
-        Describe 'ADReplicationSite\Get-TargetResource' {
-            It 'Should return a "System.Collections.Hashtable" object type' {
+        Describe 'When getting the Target Resource Information' {
+            It 'Should return a "System.Collections.Hashtable" object type with specified attributes' {
 
                 # Arrange
                 Mock -CommandName Get-ADReplicationSite -MockWith { $presentSiteMock }
@@ -95,6 +115,9 @@ try
 
                 # Assert
                 $targetResource -is [System.Collections.Hashtable] | Should -BeTrue
+                $targetResource.Description | Should -BeOfType String
+                $targetResource.Name | Should -Not -BeNullOrEmpty
+                $targetResource.Ensure | Should -Not -BeNullOrEmpty
             }
 
             It 'Should return present if the site exists' {
@@ -108,6 +131,7 @@ try
                 # Assert
                 $targetResource.Ensure | Should -Be 'Present'
                 $targetResource.Name   | Should -Be $presentSiteName
+                $targetResource.Description | Should -Be $genericDescription
             }
 
             It 'Should return absent if the site does not exist' {
@@ -121,12 +145,13 @@ try
                 # Assert
                 $targetResource.Ensure | Should -Be 'Absent'
                 $targetResource.Name   | Should -Be $absentSiteName
+                $targetResource.Description | Should -BeNullOrEmpty
             }
         }
         #endregion
 
         #region Function Test-TargetResource
-        Describe 'ADReplicationSite\Test-TargetResource' {
+        Describe 'When testing the Target Resource configuration' {
             It 'Should return a "System.Boolean" object type' {
 
                 # Arrange
@@ -139,7 +164,7 @@ try
                 $targetResourceState -is [System.Boolean] | Should -BeTrue
             }
 
-            It 'Should return true if the site should exists and does exists' {
+            It 'Should return true if the site should exist and does exist' {
 
                 # Arrange
                 Mock -CommandName Get-ADReplicationSite -MockWith { $presentSiteMock }
@@ -151,7 +176,7 @@ try
                 $targetResourceState | Should -BeTrue
             }
 
-            It 'Should return false if the site should exists but does not exists' {
+            It 'Should return false if the site should exist but does not exist' {
 
                 # Arrange
                 Mock -CommandName Get-ADReplicationSite
@@ -163,7 +188,7 @@ try
                 $targetResourceState | Should -BeFalse
             }
 
-            It 'Should return false if the site should not exists but does exists' {
+            It 'Should return false if the site should not exist but does exist' {
 
                 # Arrange
                 Mock -CommandName Get-ADReplicationSite -MockWith { $presentSiteMock }
@@ -175,7 +200,7 @@ try
                 $targetResourceState | Should -BeFalse
             }
 
-            It 'Should return true if the site should not exists and does not exists' {
+            It 'Should return true if the site should not exist and does not exist' {
 
                 # Arrange
                 Mock -CommandName Get-ADReplicationSite
@@ -186,6 +211,18 @@ try
                 # Assert
                 $targetResourceState | Should -BeTrue
             }
+
+            It 'Should return false if the site exists but the description is mismatched' {
+
+                # Arrange
+                Mock -CommandName Get-ADReplicationSite { $presentSiteTestPresent }
+
+                # Act
+                $targetResourceState = Test-TargetResource @presentSiteTestMismatchDescription
+
+                # Assert
+                $targetResourceState | Should -BeFalse
+            }
         }
 
         #endregion
@@ -197,6 +234,7 @@ try
                 # Arrange
                 Mock -CommandName Get-ADReplicationSite
                 Mock -CommandName 'New-ADReplicationSite' -Verifiable
+                Mock -CommandName 'Set-ADReplicationSite' -Verifiable
 
                 # Act
                 Set-TargetResource @presentSiteTestPresent
@@ -208,9 +246,11 @@ try
             It 'Should rename the Default-First-Site-Name if it exists' {
 
                 # Arrange
+                Mock -CommandName Get-TargetResource -MockWith { $absentSiteDefaultRenameMock }
                 Mock -CommandName Get-ADReplicationSite -MockWith { $defaultFirstSiteNameSiteMock }
                 Mock -CommandName 'Rename-ADObject' -Verifiable
                 Mock -CommandName 'New-ADReplicationSite' -Verifiable
+                Mock -CommandName Set-ADReplicationSite -Verifiable
 
                 # Act
                 Set-TargetResource @presentSiteTestPresentRename
@@ -235,6 +275,16 @@ try
                 Assert-MockCalled -CommandName 'New-ADReplicationSite' -Times 1 -Scope It
             }
 
+            It 'Should update a site if the description does not match' {
+                Mock -CommandName Get-ADReplicationSite -MockWith { $presentSiteTestPresent }
+                Mock -CommandName Set-ADReplicationSite -Verifiable
+
+                Set-TargetResource @presentSiteTestMismatchDescription
+
+                Assert-MockCalled -CommandName Set-ADReplicationSite -Times 1 -Scope It
+                Assert-MockCalled -CommandName Get-ADReplicationSite -Times 1 -Scope It -Exactly
+            }
+
             It 'Should remove an existing site' {
 
                 # Arrange