Pester comparison desired state (template) to actual

DevVnetVA.tests.ps1

# Exploring AzureRM json descriptors for testing

# We create a desiredification by running Deploy-DevVnetVA.ps1 and having it stop after writing the template,
# 'desired-DevNetVA.json'
# We determin actual state by exporting the AzureRM Resource group:
# Export-AzureRmResourceGroup -ResourceGroupName DevVnetVA -Path $pwd/actual-DevVnetVA.json


Describe "DevNetVa" {
BeforeEach {
    $actual=Get-Content ./actual-DevVnetVA.json | ConvertFrom-Json
    $desired=Get-Content ./desired-DevVnetVA.json | ConvertFrom-Json
}

Context "actualDevVnetVA" {
    It "Has 3 resources " {
        $actual.resources.length | Should be 3
    }
}

Context "desiredDevVnetVA" {
    It "Has 3 resources " {
        $desired.resources.length | Should be 3
    }
}

Context "networkSecurityGroups" {
    $actual_nsg = $actual.resources | where {$_.type -Match "networkSecurityGroup"}
    $desired_nsg = $desired.resources | where {$_.type -Match "networkSecurityGroup"}

    It "actual is not an array" {
        $actual_nsg.GetType().IsArray | Should Be $False
    }
    It "desired is not an array" {
        $desired_nsg.GetType().IsArray | Should Be $False
    }
}

Context "routeTables" {
    $actual_routeTables = $actual.resources | where {$_.type -Match "routeTables"}
    $desired_routeTables = $desired.resources | where {$_.type -Match "routeTables"}

    It "are each just one routeTable" {
        $actual_routeTables.GetType().IsArray | Should Be $False
        $desired_routeTables.GetType().IsArray | Should Be $False
    }

    It "comprises 3 UDRs" {
        $actual_routeTables.properties.routes.length | Should be 3
        $desired_routeTables.properties.routes.length | Should be 3
    }
}

}